CN104724097B - A kind of pressure sequence regulation brakes of bi-motor line traffic control - Google Patents
A kind of pressure sequence regulation brakes of bi-motor line traffic control Download PDFInfo
- Publication number
- CN104724097B CN104724097B CN201510056382.4A CN201510056382A CN104724097B CN 104724097 B CN104724097 B CN 104724097B CN 201510056382 A CN201510056382 A CN 201510056382A CN 104724097 B CN104724097 B CN 104724097B
- Authority
- CN
- China
- Prior art keywords
- motor
- pressure
- master cylinder
- brake
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- B60T13/745—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 a hydraulic system, e.g. a master cylinder
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The present invention discloses a kind of pressure sequence regulation brakes of bi-motor line traffic control, is promoted by Dual-motors Driving ball screw assembly, in two high pressure chests of master cylinder and produces brake pressure；Only there are four magnetic valves in the present invention simultaneously, one group connects with two high pressure chests of master cylinder respectively two-by-two, realizes the regulation of pressure of wheel braking cylinder；For the wheel cylinder for needing decompression/supercharging, close the normally open solenoid valve for the wheel cylinder connection that need not be depressurized/be pressurized, by motor control unit control the second motor reversely/rotate forward, when needing decompression/pressure of the wheel cylinder of supercharging reduces/when increasing to preset value, closing needs the normally open solenoid valve that the wheel cylinder of decompression/supercharging connects, and realizes decompression/supercharging of wheel cylinder.Advantages of the present invention is：It is integrated with the multiple functions such as ABS, TCS and ESP；Traditional ABS pressure regulation unit is simplified, the regulation of pressure of wheel braking cylinder need to can be only realized by four magnetic valves.
Description
Technical field
The present invention relates to a kind of line control brake system, is a kind of pressure sequence regulation system of bi-motor line traffic control specifically
Dynamic system.
Background technology
Safety energy-conserving environment protection is the inexorable trend of automotive technology development, and the development of these technologies proposes newly to brakes
Requirement.For conventional hydraulic brakes, first, active brake can not be implemented, it is difficult to meet electronic braking force distribution and
ESP etc. needs the chassis control system of active brake function；Second, friction catch in whole braking procedure always
In the presence of so as to hinder the Brake energy recovery of new energy vehicle；Third, new energy vehicle does not have vacuum source, for vacuum servo
Brakes causes cost high, for braking system with hydraulic assisting force, it is necessary to using high pressure accumulator, made, it is necessary to separately set vacuum source
Obtaining system architecture becomes complicated, while reduces the reliability of system.
Compared to conventional hydraulic brakes, line control brake system security performance is higher, and meets new energy vehicle to system
The requirement of energy recovery.But the two kinds of masters of EHB and electromechanical braking system as line control brake system
Form is wanted, structure is not compact enough, takes more arrangement space, and do not consider fail-safe.
Publication No. CN102795219A patent of invention《Motor booster type integrating automotive brakes》In, the system pair
Motor performance requires higher, increases system cost, and single motor is difficult to the pressure sequence regulation of four wheel cylinders.
Therefore, on the basis of new demand that automotive technology development proposes to brakes is met, brakes is lifted
Integrated level, by the pressure of each wheel cylinder of electromagnetism valve regulation, to realize that the function such as anti-lock control and electronic stability control is future
The inexorable trend of brakes development.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of pressure sequence regulation brakes of bi-motor line traffic control, make it have
The features such as small volume, cost are low, versatility is good.
The pressure sequence regulation brakes of bi-motor line traffic control of the present invention, including Dual-motors Driving transmission mechanism, braking master
Cylinder, fluid reservoir, hydraulic control system, pedal gear and electronic control system.
The Dual-motors Driving transmission mechanism, including the first motor, the second motor, ball screw assembly, sun wheel shaft and
The train being made up of turbine, worm screw, planetary gear, sun gear and planet carrier.
Wherein, the first motor uses hollow motor；The rotor of first motor is socketed in sun wheel shaft rear end；First motor
Rotor also can directly be fixed by ring flange with sun wheel shaft rear end.Second motor uses direct current generator, the output of the second motor
Axle coaxially couples with worm screw；Turbine has external toothing and ring gear simultaneously, is coaxially disposed with sun wheel shaft, and makes the external tooth of turbine
Circle and worm engaging.Planetary gear is installed on planet carrier, makes planetary gear circumferentially, is engaged with the ring gear of turbine；Sun gear
Coaxially it is fixed in sun wheel shaft, and is engaged with planetary gear.
Ball screw assembly, includes feed screw nut, leading screw and pushing cylinder.Wherein, leading screw is coaxially disposed with sun wheel shaft, rear end with
Planet carrier is connected；Feed screw nut screw thread is socketed on leading screw.Pushing cylinder is enclosed on leading screw, and rear end is fixed with feed screw nut front end；Push away
The push rod ends contact of cylinder and master cylinder first piston.
The hydraulic control includes 4 normally open solenoid valves and 4 wheel cylinders.Wherein, 2 normally open solenoid valves pass through
Brake piping connects with a high pressure chest of master cylinder；Another 2 normally open solenoid valves are another by brake piping and master cylinder
One high pressure chest connection；Meanwhile 4 normally open solenoid valves are connected by brake piping with 4 wheel cylinders respectively.
The pedal gear includes brake pedal, pedal rod, brake pushrod and pedal travel simulation spring.Wherein, make
Dynamic pedal is connected with pedal support, and pedal support is connected with the fire wall rear end face on automobile；Above-mentioned Dual-motors Driving driver
Leading screw and sun wheel shaft are hollow-core construction in structure, thus, brake pushrod is co-axially located in leading screw and sun wheel shaft, and make
Gap be present between the front end of brake pushrod and the first piston of master cylinder.The rear end of brake pushrod is connected with brake pedal, with
Prevent influence of the brake pedal vertical direction movement to brake pushrod；Pedal travel simulation spring is cased with brake pushrod, is located at
Between brake pedal and fire wall, sensation is trampled for simulating brake pedal.
The electronic control system includes electronic control unit, hydrostatic sensor, brake pedal switch, pedal travel sensing
Device and 4 wheel speed sensors.Wherein, hydrostatic sensor is used for gathering the pressure in master cylinder；4 wheel speed sensors are used respectively
To obtain each vehicle wheel rotational speed；PTS is used for gathering the stroke of brake pedal 501；Brake pedal switch is used for judging
Brake pedal tramples state；Electronic control unit is connected with the first motor, the second motor and 4 normally open solenoid valves；Simultaneously
Electronic control unit is also connected with brake pedal switch, PTS, hydrostatic sensor and 4 wheel speed sensors.
Advantages of the present invention is：
1st, the pressure sequence regulation brakes of bi-motor line traffic control of the present invention, suitable for various vehicles, with traditional braking system
System is compared, and eliminates vacuum booster, while support energy recovery function so that system is particularly suitable for use in new energy vehicle；
2nd, the pressure sequence regulation brakes of bi-motor line traffic control of the present invention, motor are established after initial pressure, Ke Yigen
Need to adjust the brake pressure in wheel cylinder according to system, be integrated with the multiple functions such as ABS, TCS and ESP；
3rd, the pressure sequence regulation brakes of bi-motor line traffic control of the present invention, simplifies traditional ABS pressure regulation unit, only needs
The regulation of pressure of wheel braking cylinder can be realized by four magnetic valves；
4th, the pressure sequence regulation brakes of bi-motor line traffic control of the present invention, can realize the optimal of severity of braking by motor
Control, reduce braking distance；
5th, the pressure sequence regulation brakes of bi-motor line traffic control of the present invention, when event occur in system power supply or execution unit
During barrier, driver individually promotes master cylinder to implement braking, realizes backup braking.
Brief description of the drawings
Fig. 1 is the pressure sequence regulation brake system structure schematic diagram of bi-motor line traffic control of the present invention；
Fig. 2 is Dual-motors Driving transmission mechanism O-O profiles.
In figure：
1- Dual-motors Driving transmission mechanism 2- master cylinder 3- fluid reservoirs
4- hydraulic control system 5- pedal gear 6- electronic control systems
101- the first motor 102- the second motor 103- ball screw assembly,s
104- sun wheel shaft 105- turbine 106- worm screws
107- planetary gear A 108- planetary gear B 109- planetary gears C
110- sun gear 111- planet carrier 103a- feed screw nuts
103b- ball-screw 103c- pushing cylinder 103d- flat keys
201- master cylinder body 202- master cylinder first pistons
203- master cylinder first piston return spring 204- master cylinder second pistons
205- master cylinder second piston return spring 501- brake pedals
502- brake pushrod 503- pedal travels simulate spring 504- pedal supports
505- fire wall 601- electronic control units, 602- hydrostatic sensors
603- brake pedal switch 604- PTS 605- wheel speed sensors
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The pressure sequence regulation brakes of bi-motor line traffic control of the present invention, as shown in figure 1, including Dual-motors Driving driver
Structure 1, master cylinder 2, fluid reservoir 3, hydraulic control system 4, pedal gear 5 and electronic control system 6, as shown in Figure 1.
The Dual-motors Driving transmission mechanism 1, including the first motor 101, the second motor 102, ball screw assembly, 103, too
Positive wheel shaft 104 and by turbine 105, worm screw 106, planetary gear A107, planetary gear B108, planetary gear C109, sun gear 110 with row
The train that carrier 111 is formed.
Wherein, the first motor 101 uses hollow motor, has rotor and motor stator；The rotor of first motor 101
The rear end of sun wheel shaft 104 is socketed in by spline, the power that the first motor 101 exports is transferred to by sun wheel shaft by spline
104.The rotor of first motor 101 also can directly be fixed by ring flange with the rear end of sun wheel shaft 104.As shown in Fig. 2 the second electricity
Machine 102 uses direct current generator, and the output shaft of the second motor 102 coaxially couples with worm screw 106；Turbine 105 has external toothing simultaneously
With ring gear, it is coaxially disposed with sun wheel shaft 104, and the external toothing of turbine 105 is engaged with worm screw 106.Planetary gear A107, OK
Star-wheel B108, planetary gear C109 are installed in planet carrier 111 by rotating shaft；Planetary gear A107, planetary gear B108, planetary gear
Ring gears of the C109 with turbine 105 engages, and circumferential uniform along turbine 105；Pass through planetary gear A107, planetary gear B108, OK
Star-wheel C109 realizes the positioning of turbine 105；Sun gear 110 is coaxially fixed in sun wheel shaft 104 by key connection, and and planet
Take turns A107, planetary gear B108, planetary gear C109 engagements.
Ball screw assembly, 103 includes feed screw nut 103a, leading screw 130b and pushing cylinder 103c；Wherein, leading screw 130b and the sun
Wheel shaft 104 is coaxially disposed, and rear end is connected with planet carrier 111.Feed screw nut 103a screw threads are socketed on leading screw 130b, feed screw nut
Flat key 103d is installed with 103a outer walls, is coordinated by the keyway of flat key 103d and outer sleeve, limits feed screw nut
103a rotation.Pushing cylinder 103c is enclosed on leading screw 130b, has gap between inwall circumference and leading screw 130b；Pushing cylinder 103c rear end
Fixed with feed screw nut 103a front ends；Pushing cylinder 103c and master cylinder first piston 202 push rod end axial contact.
The master cylinder 2 uses existing tandem tandem master cylinder, including master cylinder body 201, master cylinder the
One piston 202, master cylinder first piston return spring 203, master cylinder second piston 204 and master cylinder second piston are returned
Position spring 205.There are two high pressure chests in master cylinder body 201, respectively between first piston 202 and second piston 204
Cavity between cavity and second piston 204 and the end wall of master cylinder body 201；And it is located at two on master cylinder body 201
Individual high pressure chest position, respectively design an oil inlet and an oil-out.Master cylinder first piston return spring 203 is led with braking
Cylinder second piston return spring 205 is separately positioned in two high pressure chests, for realizing master cylinder first piston 202 and system
The return of dynamic master cylinder second piston 204.The fluid reservoir 3 connects braking by pipeline with two oil inlets on master cylinder 2
Master cylinder 2, the delivering oil into two high pressure chests of master cylinder 2.
The hydraulic control 4 includes 4 normally open solenoid valves 401 and 4 wheel cylinders 402；Wherein, 4 normally opened electricity
Magnet valve 401 is two-by-two one group, then two groups of normally open solenoid valves 401 are fuel-displaced by brake piping and two on master cylinder 2 respectively
Mouth connection；And 4 normally open solenoid valves 401 are connected by brake piping with 4 wheel cylinders 402 respectively.
The pedal gear 5 includes brake pedal 501, brake pushrod 502 and pedal travel simulation spring 503；Wherein, make
Dynamic pedal 501 is connected with pedal support 504, and pedal support 504 is connected with the rear end face of fire wall 505 on automobile.Above-mentioned double electricity
Leading screw 130b and sun wheel shaft 104 are hollow-core construction in machine drive transmission device 1, thus, are coaxially disposed brake pushrod 502
In leading screw 130b and sun wheel shaft 104, and make between existing between the front end of brake pushrod 502 and master cylinder first piston 202
Gap S；The rear end of brake pushrod 502 is connected by spheric seat with brake pedal 501, to prevent the vertical direction of brake pedal 501 from moving
The dynamic influence to brake pushrod 502.Be cased with brake pushrod 502 pedal travel simulation spring 503, positioned at brake pedal 501 with
Between fire wall 505, sensation is trampled for simulating brake pedal 501.Thus, when system power supply or execution unit break down
When, driver's brake pedal 501 and after overcoming gap S individually promotes master cylinder 2 to implement to brake, realized by manpower
Manpower backup braking, due to pushing cylinder 103c and master cylinder first piston 202 and non-rigid connection, manpower can provide larger
Severity of braking.
The electronic control system 6 includes electronic control unit 601, hydrostatic sensor 602, brake pedal switch 603, stepped on
Plate stroke sensor 604 and 4 wheel speed sensors 605.Wherein, hydrostatic sensor 602 is used for gathering the pressure in master cylinder 2
Power；4 wheel speed sensors 605 are respectively intended to obtain each vehicle wheel rotational speed；PTS 604 is used for gathering brake pedal
501 stroke；Brake pedal switch 603 is used for judging (whether brake pedal 501 is stepped on for the state of trampling of brake pedal 501
Under).Electronic control unit 601 is connected with the first motor 101, the second motor 102 and 4 normally open solenoid valves 401, and exports control
Signal processed；While electronic control unit 601 also switchs with brake pedal 501, PTS 604, hydrostatic sensor 602
And 4 wheel speed sensors 605 are connected and gathered data.
Brakes is adjusted by the pressure sequence of bi-motor line traffic control of the present invention, in the non-brake pedal 501 of driver,
But when electronic control unit 601 detects the active brake demand that vehicle control syetem is sent, electronic control unit 601 judges system
System works in active brake pattern, and controls the first motor 101 and the second motor 102 to drive leading screw 130b to rotate simultaneously, makes silk
Thick stick nut 103a is axially moved along leading screw 130b, finally the first piston 202 of master cylinder 2 is promoted via pushing cylinder 103c, so as to produce
Raw brake pressure.
The pressure sequence regulation brakes of the bi-motor line traffic control of the present invention, in driver's brake pedal 501, electricity
Sub-control unit 601 collects the status signal of brake pedal 501；Meanwhile electronic control unit 601 is to the brake pedal that collects
Stroke signal d is filtered, and obtains pedal travel rate signal v, with reference to pedal travel signal d and pedal travel rate signal
V, judge the mode of operation of system, be specially：
(1) when d is less than default brake-pedal travel threshold value d1, v is less than default brake pedal movement velocity threshold value v1
When, the judgement system of electronic control unit 601 needs to work in energy recuperation mode, does not need the intervention of friction catch now, the
One motor 101 and the second motor 102 are not worked, and brake force is provided separately by the regenerative braking motor of vehicle self-carrying.The present invention's
The pressure sequence regulation brakes of bi-motor line traffic control is when working in energy recuperation mode, brake pedal 501 trample sensation by
Pedal travel simulation spring provides.
(2) as d >=d1 or v >=v1, when the judgement system of electronic control unit 601 needs to work in line traffic control pattern, now
Master cylinder first piston 202 is individually promoted by the output torque of the first motor 101, the second motor 102 does not work, Electronic Control
Unit 601 obtains according to the brake-pedal travel signal collected and the pressure-volume characteristic of pre-recorded master cylinder 2
First motor 101 needs the moment of torsion exported, so that it is determined that the operating current I of the first motor 1010, now electronic control unit 601 is defeated
Go out the PWM control output torques of the first motor 101 and gather the real work electric current I of the first motor 1011, electronic control unit 601
According to current deviation e, e=I0-I1, judge whether the output torque of the first motor 101 meets to require, e0For the current deviation of setting
Thresholding.As e ＞ e0, the output torque of the first motor 101 is inadequate, fails to produce enough brake pressures, electronic control unit 601 is logical
Cross and improve PWM dutycycle and increase the output torque of the first motor 101；As-e0≤e≤e0, the output torque of the first motor 101
Meet to require；As e ＜-e0, the output torque of the first motor 101 is excessive, and electronic control unit 601 is by reducing PWM dutycycle
To reduce the output torque of the first motor 101.The pressure sequence regulation brakes of the bi-motor line traffic control of the present invention works in line
During control pattern, the sensation of trampling of brake pedal 501 is provided by pedal travel simulation spring.
The pressure-volume characteristic of above-mentioned master cylinder 2 is divided into braking master according to the conducting situation of master cylinder 2 and wheel cylinder
Cylinder 2 is turned on single preceding wheel cylinder, master cylinder 2 turns on single rear wheel cylinder, master cylinder 2 is turned on two preceding wheel cylinders, braked
Master cylinder 2 turns on two rear wheel cylinders, master cylinder 2 and four wheel cylinders simultaneously turn on five kinds of pressure-volume characteristics, all braking masters
The pressure-volume performance data of cylinder 2 is obtained by surveying, and is stored in electronic control unit 501；And the pressure-volume of master cylinder 2 is special
Property data be real-time update, electronic control unit 601 is believed according to the pedal row signal that detects and the pressure in master cylinder 2
The pressure-volume characteristic of master cylinder 2 number is determined, and the pressure-volume characteristic of the master cylinder 2 with storing before is compared
Compared with if error be present, after current brake process terminates, being corrected to the pressure-volume characteristic of master cylinder 2.
The first motor 101 of control of electronic control unit 601 and the output torque of the second motor 102 are simultaneously built-in in master cylinder 2
After vertical initial pressure, if now ABS/ESP or other chassis control degree send pressure regulation instruction, electronic control unit 601
Pressure regulation instruction is analyzed, it is specific as follows：
If timesharing obtains the decompressions of four wheel cylinders 402/supercharging instruction, or obtains two/tri- wheel cylinders 402
Instruction is depressurized/be pressurized simultaneously, then for the wheel cylinder 402 for needing decompression/supercharging, closes what need not be depressurized/be pressurized
The normally open solenoid valve 401 that wheel cylinder 402 connects, turn by the way that second motor of the control of motor control unit 601 102 is reverse/positive
It is dynamic, when needing decompression/pressure in the wheel cylinder of supercharging reduces/when increasing to preset value, close the system for needing decompression/supercharging
The normally open solenoid valve 401 that driving wheel cylinder 402 connects, realizes decompression/supercharging of wheel cylinder 402；Then, electronic control unit is passed through
601 control the second motor 102 forwards/reverses rotate so that the pressure in 2 two high pressure chests of master cylinder increases/be decreased to pre-
The initial pressure first determined.Make four wheel cylinders 402 be respectively wheel cylinder A112, wheel cylinder B113, wheel cylinder C,
Wheel cylinder D, the normally open solenoid valve 401 that four wheel cylinders 402 connect are respectively normally open solenoid valve A, normally open solenoid valve B, often
Open electromagnetic valve C, normally open solenoid valve D, then below to send pressure regulation instruction to wheel cylinder A respectively, to wheel cylinder A and braked wheel
Cylinder B be simultaneously emitted by pressure regulation instruction and wheel cylinder A, wheel cylinder B and wheel cylinder C are simultaneously emitted by pressure regulation instruct illustrate into
Row explanation：
After 1. wheel cylinder A receives pressure regulation instruction, close normally open solenoid valve B, normally open solenoid valve C, normally open solenoid valve D, electricity
The second motor of output control 102 of sub-control unit 601 reversely/rotate forward, when pressure reduces/increase to preset value when, close
Normally open solenoid valve A, wheel cylinder A decompression/supercharging is realized, the forward direction of the second motor of the control of electronic control unit 601 afterwards 102/
Rotate backward so that the pressure in 2 two high pressure chests of master cylinder increases/be decreased to predetermined initial pressure；
2. wheel cylinder A, wheel cylinder B receive pressure regulation instruction simultaneously after, normally open solenoid valve C, normally open solenoid valve D are closed,
The second motor of output control 102 of electronic control unit 601 reversely/rotate forward, when pressure reduces/increase to preset value when, close
Normally open solenoid valve A, normally open solenoid valve B are closed, decompression/supercharging while realizing wheel cylinder A, wheel cylinder B, Electronic Control afterwards
Unit 601 controls the forwards/reverse of the second motor 102 to rotate so that pressure increase/reduction in 2 two high pressure chests of master cylinder
To predetermined initial pressure；
3. wheel cylinder A, wheel cylinder B and wheel cylinder C receive pressure regulation instruction simultaneously after, normally open solenoid valve D is closed,
The second motor of output control 102 of electronic control unit 601 reversely/rotate forward, when pressure reduces/increase to preset value when, close
Normally open solenoid valve A, normally open solenoid valve B, normally open solenoid valve C are closed, realizes that wheel cylinder A, wheel cylinder B are same with wheel cylinder C's
When decompression/supercharging, afterwards electronic control unit 601 control the second motor 102 forwards/reverse to rotate so that master cylinder 2 two
Pressure in high pressure chest increases/is decreased to predetermined initial pressure；
If obtain decompression while 4 wheel cylinders/supercharging instruction, the second motor of output control of electronic control unit 601
102 reversely/rotate forward, when pressure reduces/increase to preset value when, close 4 normally open solenoid valves 401, realize 4 braked wheels
Decompression/supercharging while cylinder 402, the second motor forwards/reverse of electronic control unit control afterwards rotate so that master cylinder 2
Pressure in two high pressure chests increases/is decreased to predetermined initial pressure.
Claims (3)
1. the pressure sequence regulation brakes of bi-motor line traffic control, it is characterised in that：Including Dual-motors Driving transmission mechanism, braking
Master cylinder, fluid reservoir, hydraulic control system, pedal gear and electronic control system；
The Dual-motors Driving transmission mechanism, including the first motor, the second motor, ball screw assembly, sun wheel shaft and by whirlpool
The train that wheel, worm screw, planetary gear, sun gear and planet carrier are formed；
Wherein, the first motor uses hollow direct current generator；The rotor of first motor is socketed in sun wheel shaft rear end；First motor
Rotor also can directly be fixed by ring flange with sun wheel shaft rear end；Second motor uses direct current generator, the output of the second motor
Axle coaxially couples with worm screw；Turbine has external toothing and ring gear simultaneously, is coaxially disposed with sun wheel shaft, and makes the external tooth of turbine
Circle and worm engaging；Planetary gear is installed on planet carrier, makes planetary gear circumferentially, is engaged with the ring gear of turbine；Sun gear
Coaxially it is fixed in sun wheel shaft, and is engaged with planetary gear；
Ball screw assembly, includes feed screw nut, leading screw and pushing cylinder；Wherein, leading screw is coaxially disposed with sun wheel shaft, rear end and planet
Frame is connected；Feed screw nut screw thread is socketed on leading screw；Pushing cylinder is enclosed on leading screw, and rear end is fixed with feed screw nut front end；Pushing cylinder with
The push rod ends contact of master cylinder first piston；
The hydraulic control system includes 4 normally open solenoid valves and 4 wheel cylinders；Wherein, 2 normally open solenoid valves pass through braking
Pipeline connects with a high pressure chest of master cylinder；Another 2 normally open solenoid valves pass through another of brake piping and master cylinder
High pressure chest connects；Meanwhile 4 normally open solenoid valves are connected by brake piping with 4 wheel cylinders respectively；
The pedal gear includes brake pedal, pedal rod, brake pushrod and pedal travel simulation spring；Wherein, braking is stepped on
Plate is connected with pedal support, and pedal support is connected with the fire wall rear end face on automobile；In above-mentioned Dual-motors Driving transmission mechanism
Leading screw and sun wheel shaft are hollow-core construction, thus, brake pushrod is co-axially located in leading screw and sun wheel shaft, and make braking
Gap be present between the front end of push rod and the first piston of master cylinder；The rear end of brake pushrod is connected with brake pedal, to prevent
Influence of the brake pedal vertical direction movement to brake pushrod；Pedal travel simulation spring is cased with brake pushrod, positioned at braking
Between pedal and fire wall, sensation is trampled for simulating brake pedal；
The electronic control system include electronic control unit, hydrostatic sensor, brake pedal switch, PTS with
4 wheel speed sensors；Wherein, hydrostatic sensor is used for gathering the pressure in master cylinder；4 wheel speed sensors are respectively intended to obtain
Take each vehicle wheel rotational speed；PTS is used for gathering the stroke of brake pedal 501；Brake pedal switch is used for judging to make
Dynamic pedal tramples state；Electronic control unit is connected with the first motor, the second motor and 4 normally open solenoid valves；Electricity simultaneously
Sub-control unit is also connected with brake pedal switch, PTS, hydrostatic sensor and 4 wheel speed sensors；
In brake pedal, electronic control unit collects brake pedal status signal；Meanwhile electronic control unit is to adopting
The brake-pedal travel signal d collected is filtered, and obtains pedal travel rate signal v, with reference to pedal travel signal d and is stepped on
Plate motion rate signals v, judge the mode of operation of the pressure sequence regulation brakes of bi-motor line traffic control, be specially：
(1) when d is less than default brake-pedal travel threshold value d1, when v is less than default brake pedal movement velocity threshold value v1, electricity
Sub-control unit judges that the pressure sequence regulation brakes of bi-motor line traffic control works in energy recuperation mode, now, the first electricity
Machine and the second motor are not worked, and brake force is provided separately by the regenerative braking motor of vehicle self-carrying；
(2) as d >=d1 or v >=v1, electronic control unit judges the pressure sequence regulation brakes work of bi-motor line traffic control
In line traffic control pattern, now, master cylinder first piston is individually promoted by the first motor output torque, the second motor does not work, electricity
Sub-control unit obtains according to the brake-pedal travel signal collected and the pressure-volume characteristic of pre-recorded master cylinder
The moment of torsion for needing to export to the first motor, so that it is determined that the first motor working current I0, now electronic control unit output PWM controls
Make the first motor output torque and gather the real work electric current I of the first motor1, electronic control unit is according to current deviation e, e
=I0-I1, judge whether the first motor output torque meets to require, e0For the current deviation thresholding of setting；As e ＞ e0, first
Motor output torque is inadequate, fails to produce enough brake pressures, electronic control unit increases by improving PWM dutycycle
The output torque of first motor；As-e0≤e≤e0, the satisfaction requirement of the first motor output torque；As e ＜-e0, the output of the first motor
Moment of torsion is excessive, and electronic control unit reduces the output torque of the first motor by reducing PWM dutycycle.
2. the pressure sequence regulation brakes of bi-motor line traffic control as claimed in claim 1, it is characterised in that：The master cylinder
Pressure-volume characteristic master cylinder is divided into according to the conducting situation of master cylinder and wheel cylinder turns on, brake with single preceding wheel cylinder
Master cylinder turns on single rear wheel cylinder, master cylinder turns on two preceding wheel cylinders, master cylinder turns on two rear wheel cylinders, brakes master
Cylinder and four wheel cylinders simultaneously turn on five kinds of pressure-volume characteristics, and all braking master cylinder pressure-volume characteristics data are by surveying
Arrive, and be stored in electronic control unit；And the pressure-volume performance data of master cylinder is real-time update, electronic control unit
Determine the pressure-volume characteristic of master cylinder with the pressure signal in master cylinder according to the pedal row signal that detects, and with
The pressure-volume characteristic of the master cylinder stored before is compared, if error be present, after current brake process terminates,
The pressure-volume characteristic of master cylinder is corrected.
3. the pressure sequence regulation brakes of bi-motor line traffic control as claimed in claim 1, it is characterised in that：If timesharing obtains four
The decompression of individual wheel cylinder/supercharging instruction, or obtain decompression while two/tri- wheel cylinders/supercharging instruction, then for needing
For the wheel cylinder for depressurizing/being pressurized, the normally open solenoid valve for the wheel cylinder connection that need not be depressurized/be pressurized is closed, is passed through
Motor control unit control the second motor reversely/rotate forward, when the pressure in the wheel cylinder for needing decompression/supercharging subtracts
Small/when increasing to preset value, closing needs the normally open solenoid valve that the wheel cylinder of decompression/supercharging connects, and realizes wheel cylinder
Decompression/supercharging；Then, the second motor forwards/reverse is controlled to rotate by electronic control unit so that two high pressures of master cylinder
The pressure of intracavitary increases/is decreased to predetermined initial pressure；
If obtaining decompression while four wheel cylinders/supercharging instruction, the motor of electronic control unit output control second reversely/just
To rotation, when pressure reduces/increase to preset value when, close 4 normally open solenoid valves, decompression while realizing 4 wheel cylinders/
Supercharging, the second motor forwards/reverse of electronic control unit control afterwards rotate so that the pressure in two high pressure chests of master cylinder
Increase/be decreased to predetermined initial pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510056382.4A CN104724097B (en) | 2015-02-03 | 2015-02-03 | A kind of pressure sequence regulation brakes of bi-motor line traffic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510056382.4A CN104724097B (en) | 2015-02-03 | 2015-02-03 | A kind of pressure sequence regulation brakes of bi-motor line traffic control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104724097A CN104724097A (en) | 2015-06-24 |
| CN104724097B true CN104724097B (en) | 2018-02-23 |
Family
ID=53448682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510056382.4A Expired - Fee Related CN104724097B (en) | 2015-02-03 | 2015-02-03 | A kind of pressure sequence regulation brakes of bi-motor line traffic control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104724097B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106585602B (en) * | 2015-10-20 | 2019-08-30 | 上海汇众汽车制造有限公司 | Bi-motor electromechanical braking servomechanism |
| CN106184153A (en) * | 2016-08-16 | 2016-12-07 | 北京英创汇智科技有限公司 | A kind of brake fluid system |
| CN107054333B (en) * | 2017-03-01 | 2018-07-20 | 吉林大学 | The brake fluid system of motor control |
| CN106938644B (en) * | 2017-03-16 | 2023-05-02 | 南京奥特博机电科技有限公司 | Vehicle and vehicle composite braking system |
| JP6652101B2 (en) * | 2017-04-05 | 2020-02-19 | 株式会社アドヴィックス | Vehicle braking control device |
| CN106926836A (en) * | 2017-04-12 | 2017-07-07 | 潘泓冰 | A kind of new brake-by-wire supercharging device and its boosting method |
| CN106904160A (en) * | 2017-04-12 | 2017-06-30 | 潘泓冰 | A kind of vehicle brake fluid pressure power assisting device and its boosting method |
| CN107284431B (en) * | 2017-07-05 | 2020-07-07 | 重庆大学 | Active three-safety-redundancy high-thrust electronic power-assisted brake actuator |
| CN108204520A (en) * | 2017-11-21 | 2018-06-26 | 卢松华 | A kind of new medical oxygen filling apparatus |
| CN110027532B (en) * | 2018-01-12 | 2021-10-22 | 比亚迪股份有限公司 | Pedal sense simulator of vehicle and vehicle with same |
| CN108545072B (en) * | 2018-06-04 | 2021-01-29 | 上汽通用汽车有限公司 | Hydraulic brake boosting mechanism and boosting adjusting method thereof |
| CN110065485A (en) * | 2019-05-10 | 2019-07-30 | 安徽理工大学 | A kind of fax braking system for low-speed electronic automobile |
| CN110316173A (en) * | 2019-06-21 | 2019-10-11 | 芜湖伯特利电子控制***有限公司 | A method of ESC function and active safety control are realized by automatically controlled Booster and ABS linkage |
| CN114407850B (en) * | 2021-11-14 | 2023-06-06 | 重庆交通大学 | Unmanned automobile line control brake device |
| CN114802154A (en) * | 2022-03-20 | 2022-07-29 | 合肥工业大学 | Coaxial dual-motor line control brake system and intelligent automobile without brake pedal |
| CN114944796B (en) * | 2022-05-20 | 2024-06-11 | 上海航天控制技术研究所 | Coaxial series system driving force synchronous coordination control method based on parameter compensation |
| CN116810446A (en) * | 2023-08-25 | 2023-09-29 | 淄博纽氏达特行星减速机有限公司 | Device for clamping and displacing machine tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6079793A (en) * | 1996-10-18 | 2000-06-27 | Tokico Ltd. | Brake control system |
| CN203078511U (en) * | 2012-12-27 | 2013-07-24 | 清华大学 | Automobile brake-by-wire system |
| CN203558059U (en) * | 2013-11-18 | 2014-04-23 | 扬州泰博汽车电子智能科技有限公司 | Dual-motor line control braking system with multiple work modes and multiple pressure adjustment modes |
| CN103754209A (en) * | 2014-01-08 | 2014-04-30 | 同济大学 | Electronic hydraulic braking system |
| CN103754206A (en) * | 2014-01-08 | 2014-04-30 | 同济大学 | Mechanical, electronic and hydraulic brake system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8328297B2 (en) * | 2006-06-06 | 2012-12-11 | Honda Motor Co., Ltd. | Brake system |
| JP5545487B2 (en) * | 2010-09-30 | 2014-07-09 | 日立オートモティブシステムズ株式会社 | Brake control device |
-
2015
- 2015-02-03 CN CN201510056382.4A patent/CN104724097B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6079793A (en) * | 1996-10-18 | 2000-06-27 | Tokico Ltd. | Brake control system |
| CN203078511U (en) * | 2012-12-27 | 2013-07-24 | 清华大学 | Automobile brake-by-wire system |
| CN203558059U (en) * | 2013-11-18 | 2014-04-23 | 扬州泰博汽车电子智能科技有限公司 | Dual-motor line control braking system with multiple work modes and multiple pressure adjustment modes |
| CN103754209A (en) * | 2014-01-08 | 2014-04-30 | 同济大学 | Electronic hydraulic braking system |
| CN103754206A (en) * | 2014-01-08 | 2014-04-30 | 同济大学 | Mechanical, electronic and hydraulic brake system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104724097A (en) | 2015-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104724097B (en) | A kind of pressure sequence regulation brakes of bi-motor line traffic control | |
| CN108162943B (en) | The compound line control brake system and its brake control method of four-wheel pressure independent control | |
| CN106218619B (en) | A kind of electro-hydraulic servo braking system with multiple-working mode | |
| CN106915343B (en) | Integrated pair master cylinder line traffic control brake fluid system | |
| CN107985292A (en) | Brake pedal and servomechanism complete separated type anti-bending electric booster braking system | |
| CN105523028A (en) | Electronic-hydraulic compound brake system with electric brake assist function | |
| CN109177945A (en) | A kind of full decoupled electronic hydraulic brake system | |
| CN103950443B (en) | Pedal sense active control type EHB | |
| CN208897044U (en) | A kind of full decoupled electronic hydraulic brake system | |
| CN104442784B (en) | Integrated electric control master cylinder drive system | |
| CN203511632U (en) | Electro-hydraulic composite braking system with electric brake booster and drive-by-wire brake function | |
| CN207683519U (en) | Brake pedal and servomechanism complete separated type anti-bending electric booster braking system | |
| CN107128294B (en) | Double-rotor machine line traffic control brake fluid system | |
| CN107697053B (en) | A kind of recycling of braking energy of electric automobiles and reutilization system | |
| CN103754207B (en) | Method for controlling double-motor electric-hydraulic composite brake system on basis of force control | |
| CN106427967A (en) | Brake by-wire system used for full mechanical decoupling automobile | |
| CN107415917A (en) | A kind of EHB of integrated electronic parking braking | |
| CN107054333A (en) | The brake fluid system of motor control | |
| CN107757591A (en) | A kind of electric control braking force aid system and motor vehicle braking system | |
| CN106627551A (en) | Integrated uncoupling type electric power-assisted braking system applicable to regenerative braking | |
| CN105667484A (en) | Wire control brake system driven by two fully decoupled motors | |
| CN107499296A (en) | Electro-hydraulic brake system and Electro-hydraulic brake method | |
| CN106427964A (en) | Control-by-wire hydraulic braking system and control method thereof | |
| US20090223752A1 (en) | Disk break apparatus for electromechanical brake system | |
| CN109927692A (en) | A kind of vehicle integration electric servo brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20210203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |