CN105151030A - Energy reclaiming control device based on ABS, for brake pedal, and control method of energy reclaiming control device - Google Patents
Energy reclaiming control device based on ABS, for brake pedal, and control method of energy reclaiming control device Download PDFInfo
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- CN105151030A CN105151030A CN201510642483.XA CN201510642483A CN105151030A CN 105151030 A CN105151030 A CN 105151030A CN 201510642483 A CN201510642483 A CN 201510642483A CN 105151030 A CN105151030 A CN 105151030A
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- brake pedal
- master cylinder
- normally open
- wheel cylinder
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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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
- B60L7/26—Controlling the braking effect
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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
- 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
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
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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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/60—Regenerative braking
- B60T2270/602—ABS features related thereto
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses an energy reclaiming control device based on ABS, for a brake pedal, and a control method of the energy reclaiming control device. The energy reclaiming control device comprises a vacuum booster (4) and a main cylinder (1), wherein the vacuum booster (4) is mounted behind the brake pedal (5), and the main cylinder (1) is positioned behind the vacuum booster (4); two main control lines are led out from the main cylinder (1); each main control line is divided into two branch control lines; each branch control line controls a brake wheel cylinder through a normally open valve (2) and a normally closed valve (3) respectively, and each normally open valve (2) is connected in parallel with a one-way valve (8); each of the two main control lines is connected with a low-pressure energy accumulator (6) through a motor pump (7). The control device and the control method thereof solve the problem that the brake pedal is too hard, and the brake pedal suddenly drops off, so that the brake pedal feels bad; therefore, the comfort of a driver is improved, and the energy reclaiming efficiency can be improved by maximumly utilizing the brake moment generated by motor moment.
Description
Technical field
The present invention relates to a kind of energy regenerating control setup based on ABS for brake pedal and control method thereof.
Background technology
Regenerative braking is a gordian technique for electronlmobil, along with the energy and pollution problem increasingly serious, electronlmobil become various countries research focus, the research of energy feeding braking is then one of core technology wherein.At present, electric automobile energy regenerative braking loads by electrical generator the braking force that a lock torque (being used for generating electricity) creates car load on the drive wheel, and the electric energy simultaneously produced can be stored in inside electrokinetic cell and reuse.And be the main flow improving feedback energy efficiency at present based on the cooperation control of the electronlmobil degree of depth regenerative braking of ABS system, it is while the brake safe ensureing vehicle, master cylinder pressure is calculated by master cylinder pressure sensor, thus judge the intention (gently touching on the brake or emergency brake) of chaufeur and required lock torque, the regenerative braking of preferential use motor, makes regenerative braking carry out maximization in allowed limits and reclaims.When motor braking moment is not enough to the lock torque reaching target, will be gone to compensate by hydraulic braking moment, to meet the method for deceleration/decel needed for chaufeur and the integrated energy regenerative braking of lock torque and the cooperation control of antiblock device.Regenerative braking is all carry out when braking and not entering ABS.Once enter ABS, regenerative braking will be deactivated.While optimization feeding braking energy back organic efficiency, the pedal sense how improving chaufeur is the Focal point and difficult point researched and developed based on abs braking energy-recuperation system.
Prior art is the cooperation control of the electronlmobil degree of depth regenerative braking based on antiblock device, makes full use of the lock torque that electrical generator produces, and produces feedback energy.Its major defect is: the demand lock torque being judged chaufeur by master cylinder pressure sensor, and when motor regenerative braking moment can satisfy the demands lock torque, lock torque is all produced by the lock torque of electrical generator, does not need hydraulic braking.Now normally open valve energising is closed, and normally closed valve no power is also in closed condition.Because the braking liquid in master cylinder cannot enter brake wheel cylinder by normally open valve, brake pedal can be made to step on motionless, stone.When motor regenerative braking moment can not satisfy the demands lock torque, by hydraulic braking moment and the motor regenerative braking moment cooperation control of antiblock device, produce total car load lock torque to meet braking requirement.Now, normally open valve energising is opened, and closes normally closed valve.When needing hydraulic braking cooperation control, normally open valve throws open, and because the pressure reduction of master cylinder and brake wheel cylinder is very large, pedal can be made to fall down suddenly when restriction standard-sized sheet.The non-constant of pedal sense, is difficult to accept for the chaufeur pursuing traveling comfort and shortage this respect knowledge.
Summary of the invention
Technical matters to be solved by this invention provides a kind of energy regenerating control setup based on ABS for brake pedal and control method thereof for problems of the prior art, its objective is by the control to normally open valve and normally closed valve, effective coordination hydraulic braking moment and motor regenerative braking moment, solve the problem of the crew comfort difference that brake pedal falls to bring suddenly.
To be this kind comprise the vacuum booster being arranged on brake pedal rear and the master cylinder being positioned at vacuum booster rear for the energy regenerating control setup based on ABS of brake pedal to technical scheme of the present invention, two master control circuits are drawn from master cylinder, each master control circuit is divided into again two control paths, every bar props up control path and controls a brake wheel cylinder by a normally open valve and a normally closed valve successively respectively, and normally open valve is gone back a check valve in parallel, two master control circuits connect a low pressure accumulator respectively by a motor-mount pump again.
Described brake wheel cylinder has four, be respectively left front brake wheel cylinder, right back brake wheel cylinder, left back brake wheel cylinder and right front brake wheel cylinder, and master cylinder is X X-shape control brake wheel cylinder, namely an oil outlet of left front brake wheel cylinder, right back brake wheel cylinder and master cylinder forms a hydraulic circuit, and another oil outlet of left back brake wheel cylinder, right front brake wheel cylinder and master cylinder forms a hydraulic circuit.Two in same hydraulic circuit control paths share a motor-mount pump and low pressure accumulator.
Described normally open valve is linear valve, the pressure at the restriction two ends of normally open valve, and one end is master cylinder pressure (MCP), the other end be pressure of wheel braking cylinder (whlpress) with coil electricity after the power that produces of electromagnetic force with joint efforts.
The power that after coil electricity, electromagnetic force produces changes along with the change of the dutycycle of coil.
When dutycycle is less than a% (exact value measures gained by testing), the power that after coil electricity, electromagnetic force produces is zero always, and electromagnetic valve can not close; When dutycycle is greater than a%, electromagnetic valve can control; A% is the minimum duty cycle that can produce electromagnetic force after coil electricity.
The above-mentioned method of carrying out controlling based on the energy regenerating control setup of ABS for brake pedal is utilized to comprise:
1) when chaufeur steps on brake pedal, step on brake pedal act on pressure on master cylinder according to chaufeur, master cylinder pressure sensor judges the operation intention of chaufeur and required lock torque;
2) when motor regenerative braking moment can meet required lock torque, the braking liquid in master cylinder is flow in low pressure accumulator by normally open valve and normally closed valve with certain dutycycle, and does not flow into master cylinder;
3) when motor regenerative braking moment can not meet required lock torque, the braking liquid in master cylinder passes through normally open valve with certain dutycycle, and closes normally closed valve, makes braking liquid enter brake wheel cylinder, closes normally open valve after producing lock torque.
By the determination of the dutycycle of the braking liquid of normally open valve in master cylinder, and the pass between the power that after coil electricity, electromagnetic force produces is duty_cycle=f (dam).
Wherein, the power (dam) that after calculating the coil electricity of demand by master cylinder pressure and required pressure of wheel braking cylinder, electromagnetic force produces.According to the characteristic of electromagnetic valve, there is certain relation in dam and dutycycle: duty_cycle=f (dam), (being recorded by electromagnetic valve stand test);
Duty_cycle: the dutycycle of demand, dam: the power that after the coil electricity of demand, electromagnetic force produces.
This kind with said structure has the following advantages for the energy regenerating control setup based on ABS of brake pedal and control method thereof:
1, on the cooperation control basis of the motor regenerative braking based on antiblock device, when motor regenerative braking moment can satisfy the demands lock torque, lock torque is all produced by motor regenerative braking moment, does not need hydraulic braking.Now the braking liquid in master cylinder to be flowed directly in low pressure accumulator by normally open valve, normally closed valve with certain dutycycle and do not flow into wheel cylinder, pedal is declined slowly, the pedal sense of drive simulating person's normal brake application; When motor regenerative braking moment can not satisfy the demands lock torque, superposed by motor regenerative braking and hydraulic braking and produce lock torque, now pass through normally open valve with certain dutycycle, close normally closed valve, and control the aperture of normally open valve restriction, pedal is made to be subject to certain treadle effort, the braking liquid of demand volume is made to enter brake wheel cylinder (brake feel of the normal pedal of drive simulating person) with given pace, normally open valve is closed after producing lock torque, thus the crew comfort problem that solution pedal falls to bring suddenly.
2, this kind for the energy regenerating control setup based on ABS of brake pedal and control method thereof improve brake pedal really up to the mark and may occur unexpected under the problem of perceptual difference falling to bring, improve the traveling comfort of chaufeur, the lock torque that also can maximizedly utilize motor torque to produce, improves energy recovery efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is the schematic diagram of prior art.
Fig. 2 is schematic diagram of the present invention.
Fig. 3 is the power and Duty ratio control linear relationship curve that after coil of the present invention energising, electromagnetic force produces.
Fig. 4 is diagram of circuit of the present invention.
In figures 1-4,1: master cylinder; 2: normally open valve; 3: normally closed valve; 4: vacuum booster; 5: brake pedal; 6: low pressure accumulator; 7: motor-mount pump; 8: check valve.
Detailed description of the invention
Fig. 1 is the schematic diagram of prior art.The principle of existing antiblock device degree of depth regeneration braking control steps on according to chaufeur the master cylinder pressure that brake pedal provides, and judges its operation intention and required lock torque.Hydraulic braking moment and motor regenerative braking moment is distributed by the motor regenerative braking ratio of design under the condition of road surface of Real time identification.When judging that operator demand's lock torque is enough to be met by motor regenerative braking moment, be energized normally open valve 2 closedown, normally closed valve 3 no power, make the braking liquid of master cylinder 1 enter less than brake wheel cylinder, braking force is provided by motor torque completely.At this moment the braking liquid of master cylinder 1 can not enter brake wheel cylinder, and foot pedal is stone.When judging that operator demand's lock torque is greater than the maximum motor regenerative braking moment of permission, lock torque need be jointly produced to meet chaufeur needs by hydraulic braking moment and regenerative braking moment, now, normally open valve 2 no power, restriction standard-sized sheet, normally closed valve 3 no power, braking liquid in master cylinder 1 enters brake wheel cylinder with very fast speed by normally open valve 2, produce hydraulic braking moment, superpose with regenerative braking moment, at this moment because the braking liquid in master cylinder 1 enters brake wheel cylinder with very fast speed (master cylinder and wheel cylinder pressure reduction larger) by the restriction of normally open valve 2, braking liquid (pressure volume needed for being calculated by PV curve difference) in master cylinder 1 is run off fast, pedal is caused to fall certain distance suddenly, cause the uncomfortable of pedal sense.
Fig. 2 is structural representation of the present invention, and Fig. 3 is workflow diagram of the present invention, and Fig. 4 is diagram of circuit of the present invention.Combined from structure shown in Fig. 2-4, this kind comprises the vacuum booster 4 being arranged on brake pedal 5 rear and the master cylinder 1 being positioned at vacuum booster 4 rear for the energy regenerating control setup based on ABS of brake pedal, two master control circuits are drawn from master cylinder 1, each master control circuit is divided into again two control paths, every bar props up control path and controls a brake wheel cylinder by a normally open valve 2 and a normally closed valve 3 successively respectively, and normally open valve 2 is gone back a check valve 8 in parallel, article two, master control circuit connects a low pressure accumulator 6 respectively by a motor-mount pump 7 again.
Brake wheel cylinder has four, be respectively left front brake wheel cylinder FL, right back brake wheel cylinder RR, left back brake wheel cylinder RL and right front brake wheel cylinder FR, and master cylinder 1 controls brake wheel cylinder in X X-shape, namely an oil outlet of left front brake wheel cylinder, right back brake wheel cylinder and master cylinder forms a hydraulic circuit, and another oil outlet of left back brake wheel cylinder, right front brake wheel cylinder and master cylinder forms a hydraulic circuit.Two in same hydraulic circuit control paths share a motor-mount pump 7 and low pressure accumulator 6.
Normally open valve 2 is linear valves, and the pressure at the restriction two ends of normally open valve 2 is respectively master cylinder pressure, pressure of wheel cylinder adds the power that electromagnetic force produces after coil electricity.
The power that after coil electricity, electromagnetic force produces changes along with the change of the dutycycle of coil, and the diagram of curves of both sides relation is as shown in Figure of description 2.When dutycycle is less than a% (exact value measures gained by testing), the power that after coil electricity, electromagnetic force produces is zero always, and electromagnetic valve can not close; When dutycycle is greater than a%, electromagnetic valve can control; A% is the minimum duty cycle that can produce electromagnetic force after coil electricity.
The above-mentioned method of carrying out controlling based on the energy regenerating control setup of ABS for brake pedal is utilized to comprise:
1) when chaufeur steps on brake pedal 5, step on brake pedal 5 act on pressure on master cylinder 1 according to chaufeur, master cylinder pressure sensor judges the operation intention of chaufeur and required lock torque;
2) when motor regenerative braking moment can meet required lock torque, the braking liquid in master cylinder 1 is flow in low pressure accumulator 6 by normally open valve 2 and normally closed valve 3 with certain dutycycle, and does not flow into master cylinder 1;
3) when motor regenerative braking moment can not meet required lock torque, the braking liquid in master cylinder 1 passes through normally open valve 2 with certain dutycycle, and closes normally closed valve 3, makes braking liquid enter brake wheel cylinder, closes normally open valve 2 after producing lock torque.
By the determination of the dutycycle of the braking liquid of normally open valve in master cylinder, and the pass between the power that after coil electricity, electromagnetic force produces is duty_cycle=f (dam).
Wherein, the power (dam) that after calculating the coil electricity of demand by master cylinder pressure and required pressure of wheel braking cylinder, electromagnetic force produces.According to the characteristic of electromagnetic valve, there is certain relation in dam and dutycycle: duty_cycle=f (dam), (being recorded by electromagnetic valve stand test);
Duty_cycle: the dutycycle of demand, dam: the power that after the coil electricity of demand, electromagnetic force produces.
ABS assembly is made up of ECU, HCU, all respectively has a normally open valve 2, normally closed valve 3 in HCU between master cylinder 1 to four brake wheel cylinders.Master cylinder 1 controls brake wheel cylinder by X-shaped, and every diagonal line brake wheel cylinder all can get back to master cylinder by same low pressure accumulator 6, forms a hydraulic circuit.When normally stepping on brake pedal 5, do not enter ABS state of activation, braking liquid enters brake wheel cylinder by normally open valve 2, clamp is clamped and produces braking; During loosen the brake 5, braking liquid gets back to master cylinder 1 from normally open valve 2.
Based on the method for the cooperation control of ABS normally open valve 2, normally closed valve 3 and low pressure accumulator 6 and ABS motor, when demand lock torque is enough to be met by motor regenerative braking moment, braking liquid in master cylinder 1 passes through normally open valve 2, normally closed valve 3 until in low pressure accumulator 6 with certain dutycycle, and do not flow into brake wheel cylinder, make full use of transmission shaft drive motor simultaneously and rotate the lock torque produced, make feeding braking energy back maximize recovery in allowed limits.When demand lock torque is greater than the maximum motor regenerative braking moment of permission, braking liquid in master cylinder 1 passes through normally open valve 2 with certain dutycycle, and close normally closed 3, normally open valve 2 is closed after making the braking liquid of demand volume enter brake wheel cylinder generation lock torque, improve while efficiency reclaims at existing antiblock device cooperation control, solve pedal sense really up to the mark and unexpected under the problem of crew comfort difference falling to bring.
Normally open valve 2 is linear valves, and the pressure at the restriction two ends of normally open valve 2 is respectively master cylinder pressure (MCP), pressure of wheel cylinder (whlpress) adds the Dam that the electromagnetic force that coil electricity produces produces.The value of Dam is the change in duty cycle along with coil, and when dutycycle is less than a% (exact value measures gained by testing), electromagnetic valve can not close, and Dam is zero always; When dutycycle is greater than a%, electromagnetic valve can control.As shown in Figure of description 3.
Based on this characteristic, pressure change (certain slope) when improving pedal sense to promote the method for traveling comfort be the normal pedal of drive simulating person, when required lock torque is enough to be met by motor regenerative braking moment, normally open valve 2 is energized, open with certain dutycycle (exact value is determined by demarcation) and reach required Dam, namely Dam is simulation treadle effort optimised needed for chaufeur, normally closed valve 3 energising is opened simultaneously.When stepping on brake pedal 5, braking liquid can flow in low pressure accumulator 6 with certain speed by normally closed valve 3 by normally open valve 2, Dam needed for the pedal sense of drive simulating person's normal brake application all enters low pressure accumulator 6, and braking force now is also all produced by motor torque.Brake pedal so not only can be made to step down enhancing traveling comfort slowly, energy regenerating can also be carried out to greatest extent.
When required lock torque only cannot be met by motor regenerative braking power, need to carry out assignment system power by anti-lock braking system motor regenerative braking cooperation control of unifying, suddenly fall down to prevent pedal, first normally open valve 2 is energized, open with certain dutycycle (exact value is determined by demarcation), normally closed valve 3 cuts out, and the Dam of generation compensates the pressure reduction that pedal falls down suddenly, thus simulates the normal comfort that pedal steps down.After the braking liquid of demand volume enters wheel cylinder, close normally open valve immediately, so not only optimized pedal sense but also do not affected the energy regenerating of motor.
In sum, thus in the process of regenerative braking, the optimization of the brake pedal feel to brake energy recovering system can be reached by antiblock device.
This kind with said structure for the energy regenerating control setup based on ABS of brake pedal and control method thereof improve brake pedal really up to the mark and may occur unexpected under the problem of perceptual difference falling to bring, improve the traveling comfort of chaufeur, the lock torque that also can maximizedly utilize motor torque to produce, improves energy recovery efficiency.
Claims (7)
1. the energy regenerating control setup based on ABS for brake pedal, it is characterized in that: described energy regenerating control setup comprises the vacuum booster (4) being arranged on brake pedal (5) rear and the master cylinder (1) being positioned at vacuum booster (4) rear, two master control circuits are drawn from master cylinder (1), each master control circuit is divided into again two control paths, every bar props up control path and controls a brake wheel cylinder by a normally open valve (2) and a normally closed valve (3) successively respectively, and the upper also check valve (8) in parallel of normally open valve (2), article two, master control circuit connects a low pressure accumulator (6) respectively by a motor-mount pump (7) again.
2. a kind of energy regenerating control setup based on ABS for brake pedal according to claim 1, it is characterized in that: described brake wheel cylinder has four, be respectively left front brake wheel cylinder, right back brake wheel cylinder, left back brake wheel cylinder and right front brake wheel cylinder, and master cylinder (1) controls brake wheel cylinder in X X-shape, i.e. left front brake wheel cylinder, an oil outlet of right back brake wheel cylinder and master cylinder forms a hydraulic circuit, left back brake wheel cylinder, another oil outlet of right front brake wheel cylinder and master cylinder forms a hydraulic circuit, two in same hydraulic circuit control paths share a motor-mount pump (7) and low pressure accumulator (6).
3. a kind of energy regenerating control setup based on ABS for brake pedal according to claim 2, it is characterized in that: described normally open valve (2) is linear valve, the pressure at the restriction two ends of normally open valve (2), one end is master cylinder pressure, and the other end is making a concerted effort of the power that after pressure of wheel braking cylinder and coil electricity, electromagnetic force produces.
4. a kind of energy regenerating control setup based on ABS for brake pedal according to claim 3, is characterized in that: the power that after coil electricity, electromagnetic force produces changes along with the change of the dutycycle of coil.
5. a kind of energy regenerating control setup based on ABS for brake pedal according to claim 4, it is characterized in that: when dutycycle is less than a% (exact value measures gained by testing), the power that after coil electricity, electromagnetic force produces is zero always, and electromagnetic valve can not close; When dutycycle is greater than a%, electromagnetic valve can control; A% is the minimum duty cycle that can produce electromagnetic force after coil electricity.
6. utilize the energy regenerating control setup based on ABS for brake pedal described in claim 5 to carry out the method controlled, it is characterized in that: described control method comprises,
1) when chaufeur steps on brake pedal (5), step on brake pedal (5) act on pressure on master cylinder (1) according to chaufeur, master cylinder pressure sensor judges the operation intention of chaufeur and required lock torque;
2) when motor regenerative braking moment can meet required lock torque, braking liquid in master cylinder (1) is flow in low pressure accumulator (6) by normally open valve (2) and normally closed valve (3) with certain dutycycle, and does not flow into master cylinder (1);
3) when motor regenerative braking moment can not meet required lock torque, braking liquid in master cylinder (1) passes through normally open valve (2) with certain dutycycle, and close normally closed valve (3), make braking liquid enter brake wheel cylinder, after producing lock torque, close normally open valve (2).
7. the method for control according to claim 6, it is characterized in that: by the determination of the dutycycle of the braking liquid of normally open valve (2) in master cylinder (1), and the pass between the power that after coil electricity, electromagnetic force produces is duty_cycle=f (dam).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642483.XA CN105151030A (en) | 2015-09-30 | 2015-09-30 | Energy reclaiming control device based on ABS, for brake pedal, and control method of energy reclaiming control device |
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| CN201510642483.XA CN105151030A (en) | 2015-09-30 | 2015-09-30 | Energy reclaiming control device based on ABS, for brake pedal, and control method of energy reclaiming control device |
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| CN109131290A (en) * | 2018-08-02 | 2019-01-04 | 格陆博科技有限公司 | A kind of novel automobile brake safe system |
| CN111605528A (en) * | 2019-02-26 | 2020-09-01 | 北京新能源汽车股份有限公司 | Control method and device of electric power-assisted brake system and controller |
| CN112848905A (en) * | 2019-11-12 | 2021-05-28 | 大陆泰密克汽车系统（上海）有限公司 | Brake system for an electric or hybrid vehicle and method for operating the same |
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| CN111605528A (en) * | 2019-02-26 | 2020-09-01 | 北京新能源汽车股份有限公司 | Control method and device of electric power-assisted brake system and controller |
| CN111605528B (en) * | 2019-02-26 | 2021-07-30 | 北京新能源汽车股份有限公司 | Control method and device of electric power-assisted brake system and controller |
| CN112848905A (en) * | 2019-11-12 | 2021-05-28 | 大陆泰密克汽车系统（上海）有限公司 | Brake system for an electric or hybrid vehicle and method for operating the same |
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