WO2018181806A1 - 車両用ブレーキシステム - Google Patents
車両用ブレーキシステム Download PDFInfo
- Publication number
- WO2018181806A1 WO2018181806A1 PCT/JP2018/013434 JP2018013434W WO2018181806A1 WO 2018181806 A1 WO2018181806 A1 WO 2018181806A1 JP 2018013434 W JP2018013434 W JP 2018013434W WO 2018181806 A1 WO2018181806 A1 WO 2018181806A1
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- WIPO (PCT)
- Prior art keywords
- controller
- driver
- sub
- control device
- electric
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/82—Brake-by-Wire, EHB
Definitions
- the present invention relates to a highly reliable vehicle brake system including an electric brake.
- microcomputers As a vehicle brake system, an electric brake system equipped with a large number of control devices and a large number of microcomputers (hereinafter referred to as “microcomputers”) has been proposed (Patent Document 1).
- control devices and microcomputers for the brake system are multiplexed to make the system redundant, but the electric motor and motor driver of the brake caliper are not made redundant.
- An object of the present invention is to provide a vehicle brake system having an electric brake and having high reliability.
- the present invention has been made to solve at least a part of the above-described problems, and can be realized as the following aspects or application examples.
- One aspect of the vehicle brake system according to the present invention is as follows.
- a vehicle brake system comprising: an electric brake including at least one electric actuator for pressing the friction pad toward the rotor; a driver that drives the electric actuator; and a control device that controls the driver.
- the electric brake includes a plurality of electric actuators, It is characterized by comprising the individual drivers corresponding to the plurality of electric actuators.
- the electric brake includes a plurality of electric actuators, and the individual drivers corresponding to the plurality of electric actuators can be provided, so that the electric brakes can be made redundant. Moreover, since individual electric actuators can be controlled in the electric brake, various controls can be performed according to the situation, and controllability can be improved.
- the electric brake includes two electric actuators
- the control device includes a first controller and a second controller, The first controller can control the driver corresponding to one of the two electric actuators, and the second controller can control the driver corresponding to the other of the two electric actuators.
- the first controller that controls the driver corresponding to one of the two electric actuators and the second controller that controls the driver corresponding to the other of the two electric actuators are provided.
- the redundancy of the system can be improved.
- the two electric actuators can be individually controlled by the first controller and the second controller, and controllability can be improved.
- the control device includes a first control device and a second control device,
- the first control device includes the first controller,
- the second control device can include the second controller.
- the redundancy of the system is improved by including the first control device including the first controller and the second control device including the second controller. be able to. Further, the two electric actuators can be individually controlled by the first control device and the second control device, and controllability can be improved.
- Output signals of the plurality of electric actuators can be input to the first controller and the second controller.
- redundancy of the electric brake can be realized with a simple configuration.
- the electric brake including the plurality of electric actuators may be provided on a front wheel.
- redundancy of the front wheel electric brake can be realized, and reliability can be improved.
- FIG. 1 is an overall configuration diagram showing a vehicle brake system according to the present embodiment.
- FIG. 2 is a block diagram showing the first master controller and the first to third sub-controllers of the vehicle brake system according to the present embodiment.
- FIG. 3 is an overall configuration diagram showing a vehicle brake system according to a first modification.
- FIG. 4 is a block diagram showing a first master controller and first and second sub-controllers of the vehicle brake system according to the first modification.
- FIG. 5 is an overall configuration diagram showing a vehicle brake system according to a second modification.
- FIG. 6 is a block diagram showing a first master controller and first, second, fourth, and fifth sub-controllers of a vehicle brake system according to Modification 2.
- FIG. 7 is an overall configuration diagram showing a vehicle brake system according to Modification 3.
- FIG. 3 is an overall configuration diagram showing a vehicle brake system according to a first modification.
- FIG. 4 is a block diagram showing a first master controller and first and second sub-controllers of the vehicle brake system according
- FIG. 8 is a block diagram showing a first master controller, first and fourth sub-controllers, and first and second slave controllers of a vehicle brake system according to Modification 3.
- FIG. 9 is an overall configuration diagram showing a vehicle brake system according to Modification 4.
- FIG. 10 is a block diagram showing a second master controller, a third master controller, and a fourth master controller of a vehicle brake system according to Modification 4.
- the vehicle brake system includes an electric brake including at least one electric actuator for pressing the friction pad toward the rotor, a driver that drives the electric actuator, a control device that controls the driver,
- the electric brake includes a plurality of electric actuators and the individual drivers corresponding to the plurality of electric actuators.
- FIG. 1 is an overall configuration diagram showing a vehicle brake system 1 according to the present embodiment
- FIG. 2 shows a first master controller 30 and first to third sub-controllers 40 to 40 of the vehicle brake system 1 according to the present embodiment.
- FIG. 1 is an overall configuration diagram showing a vehicle brake system 1 according to the present embodiment
- FIG. 2 shows a first master controller 30 and first to third sub-controllers 40 to 40 of the vehicle brake system 1 according to the present embodiment.
- FIG. 1 is an overall configuration diagram showing a vehicle brake system 1 according to the present embodiment
- FIG. 2 shows a first master controller 30 and first to third sub-controllers 40 to 40 of the vehicle brake system 1 according to the present embodiment.
- the vehicle brake system 1 includes electric brakes 16a to 16d including at least one motor 80 to 85 that are electric actuators for pressing a friction pad (not shown) to a rotor side (not shown), and a motor 80. And a controller (10) including drivers 60 to 65 for driving .about.85 and a plurality of mutually connected controllers (first master controller 30, first sub controller 40, second sub controller 41, third sub controller 42). 11).
- a rotor (not shown) is provided on each of the wheels Wa to Wd of the vehicle VB that is a four-wheeled vehicle and rotates integrally with the wheels Wa to Wd.
- the vehicle VB is not limited to a four-wheeled vehicle.
- a plurality of motors may be provided for one electric brake, and a plurality of electric brakes may be provided for one wheel.
- Electric brake The electric brake 16a provided on the left wheel (FL) of the front wheel includes a brake caliper 5a, motors 80 and 81 fixed to the brake caliper 5a via a speed reducer 4a, and friction not shown by the motors 80 and 81.
- the motor 80 includes a rotation angle sensor 90 that detects the relative position of the rotation shaft with respect to its own stator. Since the motor 81 is coaxial with the motor 80, a rotation angle sensor is unnecessary (the motor 80 and the rotation angle sensor 90 are shared).
- the detection signal of the load sensor 6a is input to the first sub-controller 40, and the detection signal of the rotation angle sensor 90 (output signals of a plurality of electric actuators) is sent to the first sub-controller 40 and the first through the drivers 60 and 61. Input to the master controller 30.
- the electric brake 16b provided on the front wheel (FR) wheel Wb includes a brake caliper 5b, motors 82 and 83 fixed to the brake caliper 5b via the speed reducer 4b, and a friction pad (not shown) by the motors 82 and 83.
- the motor 82 includes a rotation angle sensor 92 that detects the relative position of the rotation shaft with respect to its own stator. Since the motor 83 is coaxial with the motor 82, a rotation angle sensor is unnecessary (the motor 82 and the rotation angle sensor 92 are shared).
- the detection signal of the load sensor 6b is input to the second sub-controller 41, and the detection signal of the rotation angle sensor 92 (output signals of the plurality of electric actuators) is connected to the second sub-controller 41 and the first through the drivers 62 and 63. Input to the master controller 30.
- the electric brake 16c provided on the rear wheel (RL) wheel Wc includes a brake caliper 5c, a motor 84 fixed to the brake caliper 5c via the speed reducer 4c, and a load applied to a friction pad (not shown) by the motor 84. And a load sensor 6c for detecting.
- the motor 84 includes a rotation angle sensor 94 that detects the relative position of the rotation shaft with respect to its own stator. The detection signal of the load sensor 6 c is input to the third sub controller 42, and the detection signal of the rotation angle sensor 94 is input to the third sub controller 42 via the driver 64.
- the electric brake 16d provided on the rear wheel (RR) wheel Wd includes a brake caliper 5d, a motor 85 fixed to the brake caliper 5d via the speed reducer 4d, and a load applied to a friction pad (not shown) by the motor 85.
- the motor 85 includes a rotation angle sensor 95 that detects the relative position of the rotation shaft with respect to its own stator.
- the detection signal of the load sensor 6 d is input to the third sub controller 42, and the detection signal of the rotation angle sensor 95 is input to the third sub controller 42 via the driver 65.
- the brake calipers 5a to 5d are integrally formed with claw portions that are formed in a substantially C shape and extend to the opposite side across a rotor (not shown).
- Reduction gears 4a to 4d are fixed to brake calipers 5a to 5d, and transmit torque generated by rotation of motors 80 to 85 to a linear motion mechanism (not shown) built in brake calipers 5a to 5d.
- the linear motion mechanism As the linear motion mechanism, a known mechanism in the electric brake can be adopted.
- the linear motion mechanism converts the rotation of the motors 80 to 85 into the linear motion of the friction pad via the speed reducers 4a to 4d.
- the linear motion mechanism presses the friction pad against the rotor and suppresses the rotation of the wheels Wa to Wd.
- motors 80 to 85 known electric motors can be adopted, for example, brushless DC motors.
- the friction pads are moved via the speed reducers 4a to 4d and the linear motion mechanism.
- adopted the motor as an electric actuator is demonstrated, you may employ
- the vehicle brake system 1 includes a brake pedal 2 that is an input device, and a stroke simulator 3 connected to the brake pedal 2.
- the brake pedal 2 includes a second stroke sensor 21 and a third stroke sensor 22 that detect an operation amount of the driver's brake pedal 2.
- the stroke simulator 3 includes a first stroke sensor 20 that detects an operation amount of the brake pedal 2.
- Each of the stroke sensors 20 to 22 generates an electrical detection signal corresponding to a depression stroke and / or a depression force, which is a kind of operation amount of the brake pedal 2, independently of each other.
- the first stroke sensor 20 transmits a detection signal to a first master controller 30 described later
- the second stroke sensor 21 transmits a detection signal to a first sub-controller 40 described later
- the third stroke sensor 22 transmits a second signal described later.
- a detection signal is transmitted to the sub-controller 41 and the third sub-controller 42.
- the vehicle VB includes a plurality of control devices (hereinafter referred to as “other control devices 1000”) provided in systems other than the vehicle brake system 1 as input devices to the vehicle brake system 1.
- the other control device 1000 is connected to the first master controller 30 of the first control device 10 and the third sub-controller 42 of the second control device 11 by CAN (Controller Area Network), and receives information on the brake operation mutually. connect.
- CAN Controller Area Network
- the control device includes a first control device 10 and a second control device 11.
- the first control device 10 is arranged at a predetermined position of the vehicle VB independently of the second control device 11.
- the first control device 10 and the second control device 11 are electronic control units (ECUs).
- ECUs electronice control units
- Each of the first control device 10 and the second control device 11 is housed in a synthetic resin casing. Therefore, redundancy is achieved by two control devices, the first control device 10 and the second control device 11.
- the example using two control apparatuses is demonstrated, it is good also considering the arrangement
- the first control device 10 and the second control device 11 are connected by CAN and communicate with each other. In CAN communication, unidirectional and bidirectional information is transmitted. Communication between ECUs is not limited to CAN.
- the first control device 10 and the second control device 11 are electrically connected to three batteries 100, 101, 102 that are independent from each other.
- the batteries 100, 101, and 102 supply power to the electronic components included in the first control device 10 and the second control device 11.
- the batteries 100, 101, 102 of the vehicle brake system 1 are arranged at predetermined positions of the vehicle VB.
- the first control device 10 includes a first master controller 30, a first sub controller 40, a second sub controller 41, and drivers 60 to 63, and the second control device 11 includes a third sub controller 42, a driver 64, 65.
- Each of the first master controller 30 and the first to third sub-controllers 40 to 42 is a microcomputer. Since the first control device 10 includes a plurality of controllers, redundancy and reliability in the first control device 10 are improved. Further, since a plurality of relatively expensive master controllers are not installed, cost reduction can be realized.
- the first master controller 30 requires high performance in order to provide the behavior control unit 303 (the behavior control unit 303 will be described later), and is a relatively expensive controller compared to the first to third sub-controllers 40 to 42. Become.
- the first master controller 30 includes a driver control unit 301 that controls the drivers 61 and 63, a braking force calculation unit 302 that calculates the braking force of the electric brakes 16a to 16d, and a vehicle VB.
- the first sub-controller 40 includes a driver control unit 400 that controls the driver 60, and a braking force calculation unit 402 that calculates the braking force of the electric brakes 16a to 16d.
- the second sub-controller 41 includes a driver control unit 410 that controls the driver 62, and a braking force calculation unit 412 that calculates the braking force of the electric brakes 16a to 16d.
- the third sub-controller 42 includes a driver control unit 420 that controls the drivers 64 and 65, and a braking force calculation unit 422 that calculates the braking force of the electric brakes 16a to 16d. Since the first to third sub-controllers 40 to 42 do not include the behavior control unit, a microcomputer that is less expensive than the first master controller 30 can be adopted, which contributes to cost reduction.
- the drivers 60 to 65 control the driving of the motors 80 to 85. Specifically, the driver 60 controls the driving of the motor 80, the driver 61 controls the driving of the motor 81, the driver 62 controls the driving of the motor 82, the driver 63 controls the driving of the motor 83, and the driver Reference numeral 64 controls driving of the motor 84, and the driver 65 controls driving of the motor 85.
- the drivers 60 to 65 control the motors 80 to 85 by, for example, a sine wave driving method. Further, the drivers 60 to 65 are not limited to the sine wave driving method, and may be controlled by a rectangular wave current, for example.
- the drivers 60 to 65 include a power supply circuit and an inverter that supply power to the motors 80 to 85 in accordance with commands from the driver control units 301, 400, 410, and 420.
- the braking force calculation units 302, 402, 412, and 422 calculate the braking force (required value) based on the detection signals of the stroke sensors 20 to 22 corresponding to the operation amount of the brake pedal 2. Further, the braking force calculation units 302, 402, 412, 422 can calculate the braking force (required value) based on a signal from another control device 1000.
- the driver control units 301, 400, 410, and 420 include the braking force (required value) calculated by the braking force calculation units 302, 402, 412, and 422, the detection signals of the load sensors 6a to 6d, and the rotation angle sensors 90 and 92. , 94, 95 based on the detection signals.
- the drivers 60 to 65 supply driving sine wave currents to the motors 80 to 85 in accordance with instructions from the driver control units 301, 400, 410, and 420.
- the currents supplied to the motors 80 to 85 are detected by the current sensors 70 to 75.
- the behavior control unit 303 outputs a signal for controlling the behavior of the vehicle VB to the driver control units 301, 400, 410, and 420. It is a behavior other than simple braking according to the operation of the normal brake pedal 2, for example, ABS (Antilock Brake System) which is a control for preventing the wheels Wa to Wd from being locked, and a control for suppressing the idling of the wheels Wa to Wd.
- ABS Antilock Brake System
- a certain TCS Traffic Control System
- TCS Traffic Control System
- the first master controller 30 and the first to third sub-controllers 40 to 42 include determination units 304, 404, 414, and 424 that determine the braking force by comparing the braking force calculation results of other controllers. Since the first master controller 30 and the first to third sub-controllers 40 to 42 have the determination units 304, 404, 414, and 424, the controllers (30, 40, 41, and 42) are selectively used according to the braking force calculation result. Thus, redundancy of the vehicle brake system 1 can be realized.
- Determination units 304, 404, 414, and 424 determine the braking force by comparing the braking force calculation results of other controllers.
- the other controllers are the first sub controller 40, the second sub controller 41, and the third sub controller 42 for the determination unit 304, and the first master controller 30, the second sub controller 41, and the third sub controller 42 for the determination unit 404.
- the sub controller 42 is the first master controller 30, the first sub controller 40, and the third sub controller 42 for the determination unit 414, and the first master controller 30, the first sub controller 40, and the second sub controller 42 for the determination unit 424. This is a sub-controller 41.
- the determination units 304, 404, 414, and 424 include the calculation result in the braking force calculation unit 302 of the first master controller 30, the calculation result in the braking force calculation unit 402 of the first sub controller 40, and the second sub controller 41.
- the calculation result in the braking force calculation unit 412 and the calculation result in the braking force calculation unit 422 of the third sub-controller 42 are compared, and it is determined which calculation result is adopted as the braking force by majority vote.
- the first master controller 30 may drive the driver based on the calculation results of the braking force calculation unit 302, the braking force calculation unit 412 and the braking force calculation unit 422. 61 and the driver 63 are controlled. That is, the determination units 304, 404, 414, and 424 make the vehicle brake system 1 redundant.
- the electric brake 16a provided on the wheel Wa includes two motors 80 and 81
- the electric brake 16b provided on the wheel Wb includes two motors. 82 and 83, drivers 60 and 61 individually corresponding to the two motors 80 and 81, and drivers 62 and 63 individually corresponding to the two motors 82 and 83, and the drivers 61 and 63 (two motors
- a first master controller 30 that controls one driver
- first and second sub-controllers 40 that control drivers 60 and 62 (drivers corresponding to the other of the two motors). 41 (second controller).
- the motor provided in the electric brake, the driver that drives the motor, and the controller that controls the driver can be realized, and the reliability can be improved. Even if one of the drivers 60 and 61 fails, one of the motors 80 and 81 can be driven by the other. If one of the drivers 62 and 63 fails, one of the motors 82 and 83 can be driven by the other. Therefore, the redundancy and reliability of the electric brakes on the front wheels are improved.
- the first master controller 30 (first controller) and the first sub-controller 40 (second controller) can individually control the two motors 80 and 81 of the electric brake 16a.
- the two motors 82 and 83 of the electric brake 16b can be individually controlled by the 30 (first controller) and the second sub-controller 41 (second controller), and the controllability can be improved.
- FIG. 3 is an overall configuration diagram illustrating a vehicle brake system 1a according to the first modification.
- FIG. 4 illustrates a first master controller 30 and first and second sub-controllers 40 of the vehicle brake system 1a according to the first modification.
- FIG. 3 and 4 the same components as those in the vehicle brake system 1 in FIGS. 1 and 2 are denoted by the same reference numerals in FIGS. 3 and 4 and detailed description thereof is omitted.
- the control device in the vehicle brake system 1a, includes a first control device 10 and a second control device 11.
- the first control device 10 includes a first master controller 30, a driver 61 that drives the motor 81 of the electric brake 16a, a driver 63 that drives the motor 83 of the electric brake 16b, and current sensors 71 and 73. .
- the second control device 11 includes a first sub controller 40, a second sub controller 41, a driver 60 that drives a motor 80 of the electric brake 16a, a driver 62 that drives a motor 82 of the electric brake 16b, and an electric brake.
- the driver 64 that drives the motor 84 of the 16c, the driver 65 that drives the motor 85 of the electric brake 16d, and current sensors 70, 72, 74, and 75 are provided.
- the driver control unit 301 of the first master controller 30 controls the drivers 61 and 63.
- the driver control unit 400 of the first sub controller 40 controls the drivers 60, 62 and 65.
- the driver control unit 410 of the second sub controller 41 controls the drivers 60, 62, and 64.
- the detection signal of the load sensor 6 c is input to the second sub controller 41, and the detection signal of the rotation angle sensor 94 is input to the second sub controller 41 via the driver 64.
- the detection signal of the load sensor 6 d is input to the first sub controller 40, and the detection signal of the rotation angle sensor 95 is input to the first sub controller 40 via the driver 65.
- the vehicle brake system 1a includes the first master controller 30 (first controller) and drivers 61 and 63 (drivers corresponding to one of the two motors) corresponding to the motors 81 and 83.
- First controller 10 includes first and second sub-controllers 40 and 41 (second controller) and drivers 60 and 62 corresponding to motors 80 and 82 (driver corresponding to the other of the two motors).
- the first control device 10 and the second control device 11 can individually control the two motors 80 and 81 of the electric brake 16a and the two motors 82 and 83 of the electric brake 16b. Can be improved.
- FIG. 5 is an overall configuration diagram illustrating a vehicle brake system 1b according to the second modification.
- FIG. 6 illustrates a first master controller 30 and first, second, and fourth of the vehicle brake system 1b according to the second modification.
- FIG. 10 is a block diagram showing fifth sub-controllers 40, 41, 43, and 44.
- the same components as those in the vehicle brake system 1 in FIGS. 1 and 2 are denoted by the same reference numerals in FIGS. 5 and 6, and detailed description thereof is omitted.
- the control device includes a first control device 10 and a second control device 11.
- the first control device 10 includes a first master controller 30, a first sub controller 40, a second sub controller 41, drivers 60 and 61 for driving motors 80 and 81 of the electric brake 16a, and an electric brake 16b.
- Drivers 62 and 63 for driving the motors 82 and 83 and current sensors 70 to 73 are provided.
- the second control device 11 includes a fourth sub-controller 43, a fifth sub-controller 44, a driver 64 that drives the motor 84 of the electric brake 16c, a driver 65 that drives the motor 85 of the electric brake 16d, and a current sensor. 74, 75.
- the driver control unit 301 of the first master controller 30 controls the drivers 61 and 63.
- the driver control unit 400 of the first sub controller 40 controls the driver 60.
- the driver control unit 410 of the second sub controller 41 controls the driver 62.
- the fourth and fifth sub-controllers 43 and 44 are microcomputers.
- the fourth sub-controller 43 includes a driver control unit 430, a braking force calculation unit 432, and a determination unit 434 that have the same configuration as the first sub-controller 40.
- the fifth sub-controller 44 includes a driver control unit 440, a braking force calculation unit 442, and a determination unit 444 that have the same configuration as the first sub-controller 40.
- the driver control unit 430 controls the driver 64
- the driver control unit 440 controls the driver 65.
- the detection signal of the load sensor 6 c is input to the fourth sub controller 43
- the detection signal of the rotation angle sensor 94 is input to the fourth sub controller 43 via the driver 64.
- the detection signal of the load sensor 6 d is input to the fifth sub controller 44, and the detection signal of the rotation angle sensor 95 is input to the fifth sub controller 44 via the driver 65.
- the detection signal of the second stroke sensor 21 is input to the fifth sub-controller 44 in addition to the first sub-controller 40, and the detection signal of the third stroke sensor 22 is input to the fourth sub-controller in addition to the second sub-controller 41. Input to the controller 43.
- vehicle brake system 1b according to the modified example 2 As with the vehicle brake system 1, it is possible to realize redundancy of the electric brakes for the front wheels and to improve controllability.
- FIG. 7 is an overall configuration diagram showing a vehicle brake system 1c according to Modification 3.
- FIG. 8 shows a first master controller 30, first and fourth sub-controllers 40 of the vehicle brake system 1c according to Modification 3. , 43 and the first and second slave controllers 50, 51.
- the same components as those in the vehicle brake systems 1 and 1b of FIGS. 1, 2, 5, and 6 are denoted by the same reference numerals in FIGS. 7 and 8, and detailed description thereof is omitted.
- the control device includes a first control device 10 and a second control device 11.
- the first control device 10 includes a first master controller 30, a first sub controller 40, a first slave controller 50, drivers 60 and 61 that drive motors 80 and 81 of the electric brake 16a, and an electric brake 16b.
- Drivers 62 and 63 for driving the motors 82 and 83 and current sensors 70 to 73 are provided. That is, the first slave controller 50 is provided instead of the second sub-controller 41 of the vehicle brake system 1b of FIG.
- the second control device 11 includes a fourth sub-controller 43, a second slave controller 51, a driver 64 that drives the motor 84 of the electric brake 16c, a driver 65 that drives the motor 85 of the electric brake 16d, and a current sensor. 74, 75. That is, the second slave controller 51 is provided instead of the fifth sub-controller 44 of the vehicle brake system 1b of FIG.
- the first and second slave controllers 50 and 51 are microcomputers, and driver control that controls the driver based on the calculation results of the braking force calculation units of the first master controller 30 and the first and fourth sub-controllers 40 and 43. (500, 510). Since the first and second slave controllers 50 and 51 do not have a braking force calculation unit, it is possible to employ an inexpensive microcomputer as compared with the first and fourth sub-controllers 40 and 43, thereby reducing costs. To contribute.
- the driver control unit 500 of the first slave controller 50 controls the driver 62
- the driver control unit 510 of the second slave controller 51 controls the driver 65.
- the detection signal of the load sensor 6b is input to the first slave controller 50, and the detection signal of the rotation angle sensor 92 is input to the first slave controller 50 and the first master controller 30 via the drivers 62 and 63.
- the detection signal of the load sensor 6 d is input to the second slave controller 51, and the detection signal of the rotation angle sensor 95 is input to the second slave controller 51 via the driver 65.
- FIG. 9 is an overall configuration diagram showing a vehicular brake system 1d according to the fourth modification
- FIG. 10 shows a second master controller 31, a third master controller 32, and a fourth master of the vehicular brake system 1d according to the fourth modification
- 3 is a block diagram showing a master controller 33.
- FIG. 9 the same components as those in the vehicle brake system 1 of FIGS. 1 and 2 are denoted by the same reference numerals in FIGS. 9 and 10, and detailed description thereof is omitted.
- the control device includes a first control device 10 and a second control device 11.
- the first control device 10 drives the second master controller 31, the third master controller 32, the drivers 60 and 61 that drive the motors 80 and 81 of the electric brake 16a, and the motors 82 and 83 of the electric brake 16b.
- Drivers 62 and 63 and current sensors 70 to 73 are provided.
- the second control device 11 includes a fourth master controller 33, a driver 64 that drives the motor 84 of the electric brake 16c, a driver 65 that drives the motor 85 of the electric brake 16d, and current sensors 74 and 75. .
- the second to fourth master controllers 31 to 33 are microcomputers, and the second master controller 31 includes a driver control unit 311, a braking force calculation unit 312, and a behavior control unit 313 having the same configuration as the first master controller 30. And the determination unit 314.
- the third master controller 32 includes a driver control unit 321, a braking force calculation unit 322, a behavior control unit 323, and a determination unit 324 having the same configuration as that of the first master controller 30, and includes a fourth master.
- the controller 33 includes a driver control unit 331, a braking force calculation unit 332, a behavior control unit 333, and a determination unit 334 that have the same configuration as the first master controller 30.
- the driver control units 311 and 321 can control the drivers 60 to 63, respectively, and the driver control unit 331 can control the drivers 60 to 65.
- the detection signals of the load sensors 6a and 6b are input to the second and third master controllers 31 and 32, and the detection signal of the rotation angle sensor 90 is supplied to the second and third master controllers 31 via the drivers 60 and 61. 32, and the detection signal of the rotation angle sensor 92 is input to the second and third master controllers 31 and 32 via the drivers 62 and 63.
- the detection signals of the load sensors 6c and 6d are input to the fourth master controller 33, the detection signal of the rotation angle sensor 94 is input to the fourth master controller 33 via the driver 64, and the detection signal of the rotation angle sensor 95 is And input to the fourth master controller 33 through the driver 65.
- the detection signal of the first stroke sensor 20 is input to the third master controller 32, the detection signal of the second stroke sensor 21 is input to the second master controller 31, and the detection signal of the third stroke sensor 22 is Input to the fourth master controller 33.
- each of the second to fourth master controllers 31 to 33 includes drivers 60 and 61 corresponding to the two motors 80 and 81 of the electric brake 16a, and the electric brake 16b. Since the drivers 62 and 63 corresponding to the two motors 82 and 83 can be controlled, the redundancy of the electric brakes of the front wheels can be improved and the controllability can be improved.
- the present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations that have the same functions, methods, and results, or configurations that have the same objects and effects).
- the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced.
- the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object.
- the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.
- a third master controller 321, a driver control unit, 322, a braking force calculation unit, 323, a behavior control unit, 324, a determination unit.
- 33 ... Fourth master controller 331 ... Driver control unit, 332 ... Braking force calculation unit, 333 ... Behavior control unit, 334 ... Determination unit, 40 ... First sub-controller, 400 ... Driver control unit, 402 ... Braking force calculation unit , 404 ... determination unit, 41 ... second sub-controller, 410 ... driver control unit, 412 ... braking force calculation unit, 414 ... determination unit, 42 ... third sub-controller, 420 ... driver control unit, 422 ... braking force calculation unit 424 ... determination unit, 43 ...
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
本発明に係る車両用ブレーキシステムの一態様は、
摩擦パッドをロータ側に押圧するための電動アクチュエータを少なくとも1つ備える電動ブレーキと、前記電動アクチュエータを駆動するドライバと、前記ドライバを制御する制御装置と、を備える車両用ブレーキシステムにおいて、
前記電動ブレーキは、複数の電動アクチュエータを備え、
前記複数の電動アクチュエータに対応した個別の前記ドライバを備えることを特徴とする。
上記車両用ブレーキシステムの一態様において、
前記電動ブレーキは、2つの電動アクチュエータを備え、
前記制御装置は、第1のコントローラと第2のコントローラとを備え、
前記第1のコントローラは、前記2つの電動アクチュエータの一方に対応した前記ドライバを制御し、前記第2のコントローラは、前記2つの電動アクチュエータの他方に対応した前記ドライバを制御することができる。
上記車両用ブレーキシステムの一態様において、
前記制御装置は、第1の制御装置と第2の制御装置とを含み、
前記第1の制御装置は、前記第1のコントローラを備え、
前記第2の制御装置は、前記第2のコントローラを備えることができる。
上記車両用ブレーキシステムの一態様において、
前記複数の電動アクチュエータの出力信号が前記第1のコントローラ及び前記第2のコントローラに入力されることができる。
上記車両用ブレーキシステムの一態様において、
前記複数の電動アクチュエータを備える前記電動ブレーキは、前輪に備えられることができる。
図1及び図2を用いて本実施形態に係る車両用ブレーキシステム1について詳細に説明する。図1は本実施形態に係る車両用ブレーキシステム1を示す全体構成図であり、図2は本実施形態に係る車両用ブレーキシステム1の第1マスタコントローラ30及び第1~第3サブコントローラ40~42を示すブロック図である。
前輪左側(FL)の車輪Waに設けられる電動ブレーキ16aは、ブレーキキャリパ5aと、ブレーキキャリパ5aに減速機4aを介して固定されたモータ80,81と、モータ80,81によって図示しない摩擦パッドに加えられる荷重を検出する荷重センサ6aと、を備える。モータ80は、自身のステータに対する回転軸の相対位置を検出する回転角センサ90を備える。モータ81は、モータ80と同軸であるため回転角センサは不要である(モータ80と回転角センサ90を共有している)。荷重センサ6aの検出信号は、第1サブコントローラ40に入力され、回転角センサ90の検出信号(複数の電動アクチュエータの出力信号)は、ドライバ60,61を介して第1サブコントローラ40及び第1マスタコントローラ30に入力される。
車両用ブレーキシステム1は、入力装置であるブレーキペダル2と、ブレーキペダル2に接続されたストロークシミュレータ3と、を含む。ブレーキペダル2は、運転者のブレーキペダル2の操作量を検出する第2ストロークセンサ21及び第3ストロークセンサ22を備える。ストロークシミュレータ3は、ブレーキペダル2の操作量を検出する第1ストロークセンサ20を備える。
制御装置は、第1の制御装置10と第2の制御装置11とを含む。第1の制御装置10は、第2の制御装置11とは独立して車両VBの所定位置に配置される。第1の制御装置10及び第2の制御装置11は、電子制御ユニット(ECU)である。第1の制御装置10及び第2の制御装置11のそれぞれは、合成樹脂製の筐体に収容される。したがって、第1の制御装置10と第2の制御装置11という2つの制御装置によって、冗長化されている。なお、制御装置を2つ用いた例について説明するが、車両VBにおける配置を考慮して1つとしてもよいし、さらに冗長性を高めるために3つ以上としてもよい。
図3及び図4を用いて変形例1に係る車両用ブレーキシステム1aについて説明する。図3は変形例1に係る車両用ブレーキシステム1aを示す全体構成図であり、図4は変形例1に係る車両用ブレーキシステム1aの第1マスタコントローラ30及び第1、第2サブコントローラ40,41を示すブロック図である。以下の説明において、図1及び図2の車両用ブレーキシステム1と同じ構成については図3及び図4でも同じ符号を付し、詳細な説明を省略する。
図5及び図6を用いて変形例2に係る車両用ブレーキシステム1bについて説明する。図5は、変形例2に係る車両用ブレーキシステム1bを示す全体構成図であり、図6は変形例2に係る車両用ブレーキシステム1bの第1マスタコントローラ30及び第1、第2、第4、第5サブコントローラ40,41,43,44を示すブロック図である。以下の説明において、図1及び図2の車両用ブレーキシステム1と同じ構成については図5及び図6でも同じ符号を付し、詳細な説明を省略する。
図7及び図8を用いて変形例3に係る車両用ブレーキシステム1cについて説明する。図7は、変形例3に係る車両用ブレーキシステム1cを示す全体構成図であり、図8は変形例3に係る車両用ブレーキシステム1cの第1マスタコントローラ30、第1、第4サブコントローラ40,43及び第1、第2スレーブコントローラ50,51を示すブロック図である。以下の説明において、図1、図2、図5、図6の車両用ブレーキシステム1、1bと同じ構成については図7及び図8でも同じ符号を付し、詳細な説明を省略する。
図9及び図10を用いて変形例4に係る車両用ブレーキシステム1dについて説明する。図9は、変形例4に係る車両用ブレーキシステム1dを示す全体構成図であり、図10は変形例4に係る車両用ブレーキシステム1dの第2マスタコントローラ31、第3マスタコントローラ32及び第4マスタコントローラ33を示すブロック図である。以下の説明において、図1、図2の車両用ブレーキシステム1と同じ構成については図9及び図10でも同じ符号を付し、詳細な説明を省略する。
Claims (5)
- 摩擦パッドをロータ側に押圧するための電動アクチュエータを少なくとも1つ備える電動ブレーキと、前記電動アクチュエータを駆動するドライバと、前記ドライバを制御する制御装置と、を備える車両用ブレーキシステムにおいて、
前記電動ブレーキは、複数の電動アクチュエータを備え、
前記複数の電動アクチュエータに対応した個別の前記ドライバを備えることを特徴とする、車両用ブレーキシステム。 - 請求項1において、
前記電動ブレーキは、2つの電動アクチュエータを備え、
前記制御装置は、第1のコントローラと第2のコントローラとを備え、
前記第1のコントローラは、前記2つの電動アクチュエータの一方に対応した前記ドライバを制御し、前記第2のコントローラは、前記2つの電動アクチュエータの他方に対応した前記ドライバを制御することを特徴とする、車両用ブレーキシステム。 - 請求項2において、
前記制御装置は、第1の制御装置と第2の制御装置とを含み、
前記第1の制御装置は、前記第1のコントローラを備え、
前記第2の制御装置は、前記第2のコントローラを備えることを特徴とする、車両用ブレーキシステム。 - 請求項2又は3において、
前記複数の電動アクチュエータの出力信号が前記第1のコントローラ及び前記第2のコントローラに入力されることを特徴とする、車両用ブレーキシステム。 - 請求項1乃至4のいずれか1項において、
前記複数の電動アクチュエータを備える前記電動ブレーキは、前輪に備えられることを特徴とする、車両用ブレーキシステム。
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JP2019510180A JP7117290B2 (ja) | 2017-03-31 | 2018-03-29 | 車両用ブレーキシステム |
US16/499,063 US11370401B2 (en) | 2017-03-31 | 2018-03-29 | Vehicle brake system |
CN201880021720.2A CN110536817B (zh) | 2017-03-31 | 2018-03-29 | 车辆用制动*** |
EP18777200.9A EP3604060A4 (en) | 2017-03-31 | 2018-03-29 | VEHICLE BRAKING SYSTEM |
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CN110536817B (zh) | 2022-06-03 |
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US20200039484A1 (en) | 2020-02-06 |
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