CN102774365B - Intelligent handbrake device and control method - Google Patents
Intelligent handbrake device and control method Download PDFInfo
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- CN102774365B CN102774365B CN201210172026.5A CN201210172026A CN102774365B CN 102774365 B CN102774365 B CN 102774365B CN 201210172026 A CN201210172026 A CN 201210172026A CN 102774365 B CN102774365 B CN 102774365B
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Abstract
The invention discloses an intelligent handbrake device, which comprises a box body and a tensioning mechanism arranged in the box body. The rear end of the tensioning mechanism is connected with a vehicle brake cable. The front end of the tensioning mechanism is driven by a motor to tension and release the vehicle brake cable. The motor is controlled by an electric control unit. A limiting switch is arranged at the rear end of the tensioning mechanism, and is connected with the electric control unit. The electric control unit controls the rotation of the motor to implement or release parking according to an acquired motor rotating speed signal, a vehicle inclination angle signal, a brake cable displacement signal, a shoe temperature signal of brake calipers and a signal of the limiting switch. The intelligent handbrake device can be used for intelligently implementing/releasing the parking according to the intention of a driver in a full-intelligent mode.
Description
Technical field
The present invention relates to intelligent hand brake device, particularly a kind of automobile intelligent hand brake device.
Background technology
Brake system of car is mainly divided into service braking system and emergency brake system, and service brake refers in vehicle traveling process for implementing the system of car brakeing.The system that braking during standstill mainly stops for vehicle long-term stability after vehicle stop, is called again parking brake.
The parking brake of current most of vehicle all adopts manpower to pull parking brake pull bar to implement braking during standstill, in parking brake drawing process, chaufeur often rule of thumb, feel implements the braking during standstill power of vehicle under different slope condition, or directly parking brake pull bar is pulled to range, thereby there is artificial uncertainty in braking during standstill size, the pulling force size that chaufeur is implemented directly affects the safety of parking and the excessive use of parts, thereby affects the fatigue life of parts.
In uphill starting process, also need parking brake to coordinate and can make normal vehicle operation, and process is loaded down with trivial details, often because operating not familiar initiation, slips slope and even the situation such as flame-out, has potential safety hazard.
Summary of the invention
Technical matters to be solved by this invention is just to provide a kind of intelligent hand brake device, can automatically calculate the required braking during standstill power of vehicle size according to road surface ramp angles, vehicle travel angle.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of intelligent hand brake device, comprise casing and be located at the tensioner mechanism in casing, described tensioner mechanism rear end connects car brakeing bracing wire, it is characterized in that: described tensioner mechanism front end is driven tension and unclamped car brakeing bracing wire by motor, described motor is by ECU (Electrical Control Unit) control, described tensioner mechanism rear end arranges a limit switch, limit switch is connected with ECU (Electrical Control Unit), described ECU (Electrical Control Unit) is according to the motor speed signal gathering, vehicle dip angle signal, brake pulling wire displacement signal, the rotation of the shoe plate temperature signal of brake caliper and limit switch signal control motor is to implement or to remove parking.
As preferably, described tensioner mechanism comprises speed-change gear and screw-nut body, motor output shaft connects speed-change gear, and the leading screw in output gear and the screw-nut body of speed-change gear is fixed, and the feed screw nut in screw-nut body connects car brakeing bracing wire.
As preferably, described speed-change gear comprises the motor gear and the dual gear that are installed on motor output shaft, and dual gear is located on a double crosslinking gear shaft, and dual gear is comprised of a big gear wheel and a miniature gears, big gear wheel engages with motor gear, and miniature gears engages with a screw gear.
As preferably, the feed screw nut that described screw-nut body comprises a leading screw and coordinates with leading screw, screw gear is installed on leading screw, described feed screw nut is located in a nut orienting sleeve, nut orienting sleeve bottom is provided with a spring, feed screw nut is inserted in nut orienting sleeve and by top pressure spring, in the guide groove on the orienting lug inserted num orienting sleeve top on feed screw nut top, drag-line permanent seat top board and nut orienting sleeve end face close contact also pass through bolted, and drag-line permanent seat end arranges brake pulling wire hanging groove to connect car brakeing bracing wire.
As preferably, described leading screw front end is through the front end cover of casing, in front end cover, be provided with end face bearings leading screw, one jam nut is threaded fastening with leading screw front end, and jam nut inner end surface compresses end face bearing outer face, in leading screw rotation process, jam nut pressure side spherical bearing also rotates with leading screw.
As preferably, described double crosslinking gear shaft passes casing front end cover, is processed with the six side's heavy stands that coordinate with hex spanner in dual gear axial end.
As preferably, described ECU (Electrical Control Unit) is a micro controller system, and described micro controller system is connected with the motor speed sensor of collection motor speed signal, the vehicle obliquity sensor of collection vehicle dip angle signal, the temperature sensor that gathers brake caliper shoe plate temperature signal and the displacement pickup of collection vehicle brake pulling wire displacement.
As preferably, described displacement pickup buckles in feed screw nut bottom, and described displacement pickup is with the synchronous moving linearly of feed screw nut displacement monitoring signal.
The present invention also provides the control method of above-mentioned intelligent hand brake device: it is characterized in that:
ECU (Electrical Control Unit) control is implemented parking and is comprised the steps; First, ECU (Electrical Control Unit) is calculated required parking power and controls motor forward according to vehicle dip angle signal, secondly, ECU (Electrical Control Unit) is made control according to motor speed signal, if motor reversal, ECU (Electrical Control Unit) control motor stalling, if motor forward, ECU (Electrical Control Unit) is adjusted required parking power and controls electric machine rotation according to the shoe plate temperature signal of brake pulling wire displacement signal and brake caliper, last, if reach required parking power, ECU (Electrical Control Unit) control motor stops operating, braking procedure finishes, if the required parking power of out of reach continues to implement braking during standstill;
ECU (Electrical Control Unit) control is removed parking and is comprised the steps; First, ECU (Electrical Control Unit) control motor reversal, secondly, ECU (Electrical Control Unit) is made control according to motor speed signal, if motor forward, ECU (Electrical Control Unit) control motor stalling, if motor reversal, ECU (Electrical Control Unit) is calculated required parking power and controls electric machine rotation according to brake pulling wire displacement signal, last, if limit switch closure, ECU (Electrical Control Unit) control motor stops operating, if the not yet closed release thresholding that reached required of need to judging whether of limit switch, if would reach release thresholding, the number of turns rear motor that motor continues reversion setting stops operating, and braking procedure finishes.
In the present invention, tensioner mechanism drives tension car brakeing bracing wire by motor, the ECU (Electrical Control Unit) of motor is according to the motor speed signal gathering, vehicle dip angle signal and braking during standstill force signal, the rotation of the shoe plate temperature signal control motor of limit switch signal and brake caliper, by the rotating of motor, can realize and implement or remove parking, thereby can be according to road surface ramp angles, vehicle travel angle, automatically calculate the required braking during standstill power of vehicle size, can also make temperature compensating for brake strap temperature traverse, and then implement suitable braking during standstill, realized under full intelligent mode and implemented/removed parking according to driver intention intelligence.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is this patent structural assembly exploded view;
Fig. 2 is this patent gear-lead screw transmission exploded view;
Fig. 3 is this patent front end cover assembly band leading screw exploded view;
Fig. 4 is this patent tensioner mechanism exploded view;
Fig. 5 is this patent manual unlocking front view;
Fig. 6 is electric parking and braking device structured flowchart, in solid box, is wherein the assembly of device, and outside is coupled parts;
Fig. 7 is the schematic block circuit diagram of electric parking and braking device;
Fig. 8 A is the schematic diagram of the motor positive and inverse control part of the motor-drive circuit of control circuit X;
Fig. 8 B is the electric motor loop current detecting part of motor-drive circuit and the schematic diagram of motor afterflow control circuit part of control circuit X;
Fig. 8 C is the schematic diagram of the obliquity sensor testing circuit of control circuit X;
Fig. 8 D is the schematic diagram of the pulling force Hall element testing circuit of control circuit X;
Fig. 8 E is the schematic diagram of the temperature sensing circuit testing circuit of control circuit X;
Fig. 9 is braking during standstill logic diagram;
Figure 10 is for removing braking during standstill logic diagram.
The specific embodiment
First, referring to figs. 1 to Fig. 6, illustrate the physical construction of the present invention's intelligence hand brake device,
As shown in Figure 1, this kind of intelligent hand brake device comprises: 1 tensioner mechanism, 2 upper end covers, 3 ECU (Electrical Control Unit), 4 motors, 5 screw gears, 6 dual gears, 7 front end covers, 8 plain bearings, 9 bearings, 10 casings, 11 leading screws, 12 limit switches, 13 rear side housings.This device is electromechanical coupling product, compact conformation, and stable performance, complete function, can effectively simplify driver's operation, and improves car load preceence.
Concrete, motor 4 is fastening by bolt and casing 10; Dual gear 6 is installed in casing 10 gears case by plain bearing 8, and engages with screw gear 5; Screw gear 5 is installed in casing 10 gears case by bearing 9, and engages with dual gear 6; Leading screw 11 is fixed by key with screw gear 5; Front end cover 7 is fastenedly connected by bolt and casing 10, and connecting end surface arranges end-face seal ring; ECU (Electrical Control Unit) 3 is fastenedly connected by bolt and upper end cover 2, and upper end cover 2 with casing 10 by bolted, and in connecting end surface, end-face seal ring is set; The built-in feed screw nut 1c of tensioner mechanism 1 and leading screw 11 engaged transmission moving linearlies, tensioner mechanism 1 rear end hanging groove can buckle car brakeing bracing wire.
As shown in Figure 2, motor gear 42 is connected with motor front end output shaft 41, transmitting torque, and motor speed sensor 43 is connected with motor output shaft 41 ends; Motor gear 42 engages with big gear wheel in dual gear 6, and drives dual gear to rotate; Dual gear miniature gears engages with screw gear 5, and rotates with dual gear; Screw gear 5 internal diameters arrange keyway, and leading screw 11 is connected with screw gear by key 14, and rotates with dual gear; The built-in feed screw nut 1c of tensioner mechanism 1 engages with leading screw 11, and slides and do straight-line displacement in the interior guide groove of casing 10, and tensioner mechanism arranges brake pulling wire hanging groove can buckle car brakeing bracing wire; Limit switch 12 is installed in casing 10 by bolt, and is arranged in tensioner mechanism 1 end.
As shown in Figure 3, leading screw front end is through front end cover 74, and be connected with end face bearing 73, jam nut 72 is threaded fastening with leading screw 11 front ends, and its end face oppresses in end face bearing 73 end faces, in leading screw 11 rotation processes, jam nut 72 pressure side spherical bearings 73 also rotate with leading screw, front end cover cover plate 71 is fastenedly connected by bolt and front end cover 74, sealing corresponding assembly, and limit leading screw 11 and do straight-line motion.
As shown in Figure 4, in closed-center system 1b installation and nut orienting sleeve 1a, closed-center system is a spring; Feed screw nut 1c is inserted in nut orienting sleeve 1a and closed-center system 1b entirety is contained, in the guide groove of orienting lug inserted num orienting sleeve 1a top, feed screw nut 1c top; Drag-line permanent seat 1d top board and nut orienting sleeve 1a end face close contact also pass through bolted, and drag-line permanent seat 1d end arranges brake pulling wire hanging groove; Displacement pickup 1e buckles in feed screw nut bottom, with the synchronous moving linearly of feed screw nut displacement monitoring signal.Feed screw nut 1c is in leading screw 11 transmissions and at the spacing lower moving linearly of nut orienting sleeve 1a top guide groove, and compressing closed-center system 1b produces displacement and promotes nut orienting sleeve 1a moving linearly, and ECU (Electrical Control Unit) 3 is calculated brake holding load according to this displacement; While is done equidirectional straight-line motion with the drag-line permanent seat 1d that nut orienting sleeve 1a is fastenedly connected, and then drives hanging groove inside brake bracing wire campaign to make braking during standstill.
Nut orienting sleeve and bracing wire permanent seat are rigidly connected, and with brake pulling wire in tension; Feed screw nut is driven and is made axial motion by leading screw, and oppresses Compress Spring, and because displacement pickup is because being fixed on feed screw nut, therefore with feed screw nut, axially move simultaneously, and then produce displacement.Be the corresponding Compress Spring amount of compression of this displacement, the corresponding required pulling force of braking during standstill of spring pressure (namely parking power).
The top board of limit switch 12 initial conditions and drag-line permanent seat 1d joins, and in this kind of intelligent hand brake device installation, dismounting, adjustment process, for braking initialization, provides reset signal.
Braking during standstill:
As shown in Figure 1, ECU (Electrical Control Unit) 3 is controlled motor 4 forwards, and dual gear 6, screw gear 5, leading screw 11 are subject to motor gear to drive forward rotation simultaneously, and then tensioner mechanism 1 is made forward straight-line motion, enforcement braking during standstill.
As shown in Figure 9, ECU (Electrical Control Unit) control enforcement parking comprises the steps;
First, ECU (Electrical Control Unit) is calculated required parking power and controls motor forward according to vehicle dip angle signal, secondly, ECU (Electrical Control Unit) is made control according to motor speed signal, if motor reversal, ECU (Electrical Control Unit) control motor stalling, if motor forward, ECU (Electrical Control Unit) is adjusted required parking power and controls electric machine rotation according to the shoe plate temperature signal of brake pulling wire displacement signal and brake caliper, last, if reach required parking power, ECU (Electrical Control Unit) control motor stops operating, braking procedure finishes, if the required parking power of out of reach continues to implement braking during standstill;
Remove braking during standstill:
As shown in Figure 1, ECU (Electrical Control Unit) 3 is controlled motor 4 and is reversed, and dual gear 6, screw gear 5, leading screw 11 are rotated backward by motor gear driving simultaneously, and then tensioner mechanism 1 is done reverse linear motion, braking during standstill releasing.
As shown in figure 10, ECU (Electrical Control Unit) control releasing parking comprises the steps; First, ECU (Electrical Control Unit) control motor reversal, secondly, ECU (Electrical Control Unit) is made control according to motor speed signal, if motor forward, ECU (Electrical Control Unit) control motor stalling, if motor reversal, ECU (Electrical Control Unit) is calculated required parking power and controls electric machine rotation according to brake pulling wire displacement signal, last, if limit switch closure, ECU (Electrical Control Unit) control motor stops operating, if the not yet closed release thresholding that reached required of need to judging whether of limit switch, if would reach release thresholding, the number of turns rear motor that motor continues reversion setting stops operating, and braking procedure finishes.
After whether detection reaches logic threshold a, continuation reversion N circle is automatic backlash adjustment function.This function is provided by mechanical part on traditional braking device, in this mechanism, by control unit, is realized, and has more reliable and accuracy.
Manually remove parking:
As shown in Figure 5, dual gear 6 rotating shafts communicate with front end cover 7, rotating shaft front end is processed with six side's heavy stands 16, while needing manually to remove parking, insert standard hex spanner 15 and press direction initialization rotation, dual gear 6 is contrarotation, and then drives screw gear 5, leading screw 11 contrarotations, reaches and removes parking effect.
With reference to figure 6 and Fig. 7, schematic block circuit diagram and principle of work explanation are described: schematic block circuit diagram refers to Fig. 7, what in figure China and foreign countries wire frame, represent is the composition of electrical part in whole electric parking and braking device, what in interior wire frame, represent is the composition of electrical part in control circuit assembly X, control circuit assembly X does not comprise and contains motor X, stroke sensor X, limit switch, automatic mode switch, manual parking switch and manual cancel switch, but comprises these electrical parts in device; What outer wire frame appearance was shown is circuit connection in the external world and device, contains ignition lock, brake switch etc.
Important several functional module principles in control circuit X, comprise motor-drive circuit, obliquity sensor testing circuit, pulling force sensor testing circuit and temperature sensor testing circuit, and principle is described as follows:
Whole motor-drive circuit is divided into following pith: motor positive and inverse control part, electric motor loop current detecting part, motor afterflow control circuit part.Motor positive and inverse control part refers to Fig. 8 A, and electric motor loop current detecting part and motor afterflow control circuit part refer to Fig. 8 B.
Motor positive and inverse control part: the mouth FWD by micro controller system and REV drive conducting and the cut-off of aerotron Q1 and Q2, whether carry out in control relay inductance coil between 2,3 pins and between 4,5 pins switches on, thereby come adhesive and the disconnection of the contact 7 or 8 of control relay, the common port of relay is connected to two-stage Motor++ and the Motor--of motor, and then can coordinate to control the rotating of motor.Electric motor loop current detecting part: this part detects electric motor loop electric current by chip BTS443P, and according to the characteristic of motor, we adopt two BTS443P parallel connections, to improve range.Micro controller system output Motor_Control signal driver chip BTS443P work, motor can normally be worked, now chip BTS443P can sense electric motor loop electric current, by chip pin 4, export corresponding proportional feedback electric current, the feedback current resistance R 10 of flowing through, R10 produces loss in voltage, and this magnitude of voltage inputs to micro controller system pin MotorCurrent_Detection_AD and detects, and has detected electric motor loop current value.Motor afterflow control circuit part: when control motor stops, micro controller system Motor_Control signal control BTS443P stops, now, and electric current flow through sustained diode 9 or D10, after motor stops, micro controller system stops exporting rotating control signal FWD or REV again.
Motor speed sensor effect:
A) judge motor positive and inverse, the actual central corresponding parking/brake off of implementing;
B) at automatic backlash, adjust (opinion is except parking logic diagram) in function, motor reversal N circle is by electromechanical transducer identification lap signal.
Obliquity sensor: these parts are built in circuit card, and horizontal setting, can monitor vehicle direct of travel and vehicle inclination angle, front and back, for control unit provides angle signal, vehicle travel angle can have obliquity sensor to provide, and headstock is forward positive rake, is negative incidence backward.
Braking during standstill force signal: i.e. feed screw nut bottom displacement pickup.Controller calculates braking force according to this displacement.
Temperature sensor: be arranged in brake caliper inside, by wire connection control unit.This Sensor monitoring clamp shoe plate temperature traverse, for control unit provides temperature signal.Control unit calculates the heat fade that shoe plate causes because of temperature traverse accordingly, the shoe plate gap that shoe plate expanded by heating causes changes.And accordingly actuating unit is implemented to controlled reset.
Obliquity sensor testing circuit refers to Fig. 8 C, and obliquity sensor is selected matured product SCA60C.The external 5V driving power of this sensor, 7 pin are analog voltage signal output pin.VOUT is connected to the analog-converted pin of MCU, carries out magnitude of voltage sampling.
Pulling force sensor testing circuit refers to Fig. 8 D, and linear hall sensor is selected SS495A.The output of the linear hall sensor of SS490 series is the ratio Voltage-output relevant with power line voltage.During normal work, its output signal pin 3 is connected to the analog-converted pin of MCU, carries out magnitude of voltage sampling.
Temperature sensor testing circuit refers to Fig. 8 E, and temperature sensor is selected DS1820.The external 5V driving power of this sensor, 2 pin are digital signal output pin.During normal work, DQ pin is linked into the pin of MCU, carries out data and read.
In sum, the present invention has the following advantages:
1, can automatically calculate the required braking during standstill power of vehicle size according to Vehicle Driving Cycle road surface ramp angles, vehicle travel angle.
2, there is automatic backlash and adjust function.In releasing braking during standstill process, gather parking tensile force signal, according to nominal pulling force, fixing retract stroke is set, thereby reaches gap adjustment.Adopt the vehicle of traditional hand brake device after permanent use, brake pulling wire often produces deformation, and its length progressively lengthens, thereby affects braking during standstill power size and parking operation response.This patent gathers parking tensile force signal in releasing braking during standstill process, according to nominal pulling force, fixing retract stroke is set, thereby reaches gap adjustment.
3, there is temperature compensation function.The change of temperature in the each parts braking procedure of energy Real-Time Monitoring, and by calculating the deformation quantity of each parts, according to this deformation quantity, make temperature compensating, and then implement suitable braking during standstill.Vehicle goes to toward first implementing service brake at enforcement braking during standstill, service brake power size under different road conditions, braking time is all not quite similar, brake strap, brake disc frictional heat also differ widely, brake strap is also variant because of thermal deformation amount, therefore under different operating modes, needs to implement parking power according to different thermal deformation amounts.The change of temperature in the each parts braking procedure of this patent energy Real-Time Monitoring, and by calculating the deformation quantity of each parts, according to this deformation quantity, make temperature compensating, and then implement suitable braking during standstill.This function acts on particularly evident in emergency brake of vehicle
4, have initial reset function, limit switch is implemented braking initialization in this kind of intelligent hand brake device installation, dismounting, adjustment process.
Claims (2)
1. an intelligent hand brake device, comprise casing (10) and be located at the tensioner mechanism (1) in casing, described tensioner mechanism rear end connects car brakeing bracing wire, it is characterized in that: described tensioner mechanism front end is driven tension and unclamped car brakeing bracing wire by motor (4), described motor is controlled by ECU (Electrical Control Unit) (3), described tensioner mechanism rear end arranges a limit switch (12), limit switch is connected with ECU (Electrical Control Unit), described ECU (Electrical Control Unit) is according to the motor speed signal gathering, vehicle dip angle signal, brake pulling wire displacement signal, the rotation of the shoe plate temperature signal of brake caliper and limit switch signal control motor is to implement or to remove parking.
2. the intelligent hand brake device of one according to claim 1, it is characterized in that: described tensioner mechanism comprises speed-change gear and screw-nut body, motor output shaft connects speed-change gear, leading screw in output gear and the screw-nut body of speed-change gear is fixed, and the feed screw nut in screw-nut body connects car brakeing bracing wire.
3. the intelligent hand brake device of one according to claim 2, it is characterized in that: described speed-change gear comprises the motor gear (42) and the dual gear (6) that are installed on motor output shaft (41), dual gear is located on a double crosslinking gear shaft, dual gear is comprised of a big gear wheel and a miniature gears, big gear wheel engages with motor gear, and miniature gears engages with a screw gear (5).
4. the intelligent hand brake device of one according to claim 3, it is characterized in that: the feed screw nut (1c) that described screw-nut body comprises a leading screw (11) and coordinates with leading screw, screw gear is installed on leading screw, described feed screw nut is located in a nut orienting sleeve (1a), nut orienting sleeve bottom is provided with a spring, feed screw nut is inserted in nut orienting sleeve and by top pressure spring, in the guide groove on the orienting lug inserted num orienting sleeve top on feed screw nut top, drag-line permanent seat (1d) top board and nut orienting sleeve (1a) end face close contact also pass through bolted, drag-line permanent seat end arranges brake pulling wire hanging groove to connect car brakeing bracing wire.
5. the intelligent hand brake device of one according to claim 4, it is characterized in that: described leading screw front end is through the front end cover (74) of casing, in front end cover, be provided with end face bearing (73) and support leading screw, one jam nut (72) is threaded fastening with leading screw front end, and jam nut inner end surface compresses end face bearing outer face, in leading screw rotation process, jam nut pressure side spherical bearing also rotates with leading screw.
6. the intelligent hand brake device of one according to claim 5, is characterized in that: described double crosslinking gear shaft passes casing front end cover, is processed with the six side's heavy stands (16) that coordinate with hex spanner (15) in dual gear axial end.
7. the intelligent hand brake device of one according to claim 6, it is characterized in that: described ECU (Electrical Control Unit) (3) is a micro controller system, described micro controller system is connected with the motor speed sensor (43) of collection motor speed signal, the vehicle obliquity sensor of collection vehicle dip angle signal, the temperature sensor that gathers brake caliper shoe plate temperature signal and the displacement pickup (1e) of collection vehicle brake pulling wire displacement.
8. the intelligent hand brake device of one according to claim 7, is characterized in that: described displacement pickup (1e) buckles in feed screw nut (1c) bottom, and described displacement pickup is with the synchronous moving linearly of feed screw nut displacement monitoring signal.
9. an intelligent hand brake device control method, is characterized in that:
ECU (Electrical Control Unit) control is implemented parking and is comprised the steps: first, ECU (Electrical Control Unit) is calculated required parking power and controls motor forward according to vehicle dip angle signal, secondly, ECU (Electrical Control Unit) is made control according to motor speed signal, if motor reversal, ECU (Electrical Control Unit) control motor stalling, if motor forward, ECU (Electrical Control Unit) is adjusted required parking power and controls electric machine rotation according to the shoe plate temperature signal of brake pulling wire displacement signal and brake caliper, finally, if reach required parking power, ECU (Electrical Control Unit) control motor stops operating, braking procedure finishes, if the required parking power of out of reach, continue to implement braking during standstill,
ECU (Electrical Control Unit) control is removed parking and is comprised the steps: first, ECU (Electrical Control Unit) control motor reversal, secondly, ECU (Electrical Control Unit) is made control according to motor speed signal, if motor forward, ECU (Electrical Control Unit) control motor stalling, if motor reversal, ECU (Electrical Control Unit) is calculated required parking power and controls electric machine rotation according to brake pulling wire displacement signal, finally, if limit switch closure, ECU (Electrical Control Unit) control motor stops operating, if limit switch not yet closure need to judge whether the release thresholding that reaches required, if reach release thresholding, the number of turns rear motor that motor continues reversion setting stops operating, braking procedure finishes.
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| CN201210172026.5A CN102774365B (en) | 2012-05-25 | 2012-05-25 | Intelligent handbrake device and control method |
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| CN201210172026.5A CN102774365B (en) | 2012-05-25 | 2012-05-25 | Intelligent handbrake device and control method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103182935A (en) * | 2013-03-12 | 2013-07-03 | 刘金鹏 | Control system and control method for electronic parking of automatic transmission automobile |
| CN106402205B (en) * | 2016-10-28 | 2018-11-09 | 江苏理工学院 | Automobile electro-mechanical brake system wheel side self-powered brake actuator |
| CN106347339B (en) * | 2016-10-28 | 2018-11-23 | 江苏理工学院 | Automobile electro-mechanical brake system self-powered bi-motor brake actuator |
| CN107499292A (en) * | 2017-07-31 | 2017-12-22 | 重庆青山工业有限责任公司 | automatic transmission electronic parking mechanism |
| CN109435930B (en) * | 2018-12-07 | 2024-07-05 | 中通客车股份有限公司 | Control method of electronic hand brake controller of passenger car |
| CN110514920A (en) * | 2019-07-16 | 2019-11-29 | 苏州西木机械有限公司 | Electronics parking brake detection device |
| CN111963679B (en) * | 2020-09-04 | 2021-12-31 | 泰州星云动力有限公司 | Semi-automatic power-off parking mechanism |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4629043A (en) * | 1983-01-31 | 1986-12-16 | Mazda Motor Corporation | Electric parking brake system for a vehicle |
| DE10361127C5 (en) * | 2003-12-22 | 2013-10-24 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Control device, in particular motor vehicle parking brake |
| DE102005021721A1 (en) * | 2005-05-11 | 2006-11-16 | Zf Friedrichshafen Ag | Method for controlling driving functions of a vehicle |
| KR101055975B1 (en) * | 2005-06-22 | 2011-08-11 | 주식회사 만도 | Electric parking brake |
| CN200942768Y (en) * | 2006-08-02 | 2007-09-05 | 浙江亚太机电股份有限公司 | Vehicle parking brake system |
| CN100491172C (en) * | 2007-01-22 | 2009-05-27 | 余晓鹏 | Electric parking and braking device |
| CN202743225U (en) * | 2012-05-25 | 2013-02-20 | 浙江万安科技股份有限公司 | Intelligent hand brake device |
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Effective date of registration: 20160420 Address after: 201200 Shanghai city Pudong New Area Sichuan Road No. 211 Patentee after: Shanghai Wanjie Auto Control System Co., Ltd. Address before: 311835 Zhejiang city in Shaoxing Province town of Zhuji city shop WAN technology park Patentee before: Zhejiang VIE Science & Technology Co., Ltd. |