CN104608643A - Brake energy recovery system and method based on adaptive cruise control system - Google Patents
Brake energy recovery system and method based on adaptive cruise control system Download PDFInfo
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- CN104608643A CN104608643A CN201410743865.7A CN201410743865A CN104608643A CN 104608643 A CN104608643 A CN 104608643A CN 201410743865 A CN201410743865 A CN 201410743865A CN 104608643 A CN104608643 A CN 104608643A
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Abstract
The invention provides a brake energy recovery system and method based on an adaptive cruise control system. The brake energy recovery system comprises the adaptive cruise control system, a vehicle distance sensor, an anti-lock brake system, a vehicle control unit, a motor controller and a driving motor, the vehicle distance sensor and the anti-lock brake system are connected with the vehicle control unit to transmit a signal of the distance between a current vehicle and a preceding vehicle and a current wheel speed signal to the vehicle control unit, the adaptive cruise control system is connected with the vehicle control unit, the adaptive cruise control system adjusts the distance between the current vehicle and the preceding vehicle according to the vehicle distance signal and the wheel speed signal, and the vehicle control unit is connected with the driving motor through the motor controller. A control method is based on the vehicle-mounted adaptive cruise control system. When a vehicle cruise decelerates automatically, electric energy is recycled through motor brake preferentially, and economic performance of the vehicle is improved.
Description
Technical field
The present invention relates to the Brake energy recovery technology of automobile, be specifically related to a kind of brake energy recovering system based on adaptive cruise control system and method thereof.
Background technology
One of main path realizing target for energy-saving and emission-reduction in development new-energy automobile auto-industry Future Development, Brake energy recovery is one of important energy saving technology of modern new-energy automobile.On traditional internal-combustion engines vehicle, when car retardation, braking, the kinergety of vehicle changes heat energy into by brake system, and discharge in air, and on electronlmobil and hybrid electric vehicle, this kinergety be wasted by Brake energy recovery technical change be electrical energy for storage in storage battery, and be further converted to driving-energy.Such as, when vehicle start or when accelerating, when needing to increase propulsive effort, motor propulsive effort becomes the auxiliary power of driving engine, makes electric energy obtain effectively application.
Adaptive cruise control system is a kind of intelligentized autonomous cruise speed system, in vehicle travel process, remains safety distance by coordination spacing and wheel speed to make vehicle and front vehicles.Current self-adaption cruise system is multiplex in traditional high-end vehicle, rarely has application in new-energy automobile field.Cutting self-adaption cruise system in traditional vehicle when detecting that the spacing of vehicle and front truck is too small, being by suitably braking to make wheel with anti-blocking brake system and engine management system coordination, thus reaching the object of automatic reduction of speed.The energy produced because of car retardation in this process directly loses with the form of heat.
Summary of the invention
In view of this, the invention provides a kind of brake energy recovering system based on adaptive cruise control system and method thereof, be intended to the economy improving car load.
The technical solution used in the present invention is specially:
A kind of brake energy recovering system based on adaptive cruise control system, comprise adaptive cruise control system, spacing sensor, anti-blocking brake system, entire car controller, electric machine controller and drive motor, described spacing sensor is connected with described entire car controller respectively with described anti-blocking brake system, spacing signal between vehicle and front truck and current wheel speed signal are transferred to described entire car controller, described adaptive cruise control system is connected with described entire car controller, described adaptive cruise control system is by spacing signal and the spacing between wheel speed signal adjustment vehicle and front truck, described entire car controller is connected with drive motor by electric machine controller.
Based on a control method for the brake energy recovering system of adaptive cruise control system, concrete steps are:
In vehicle travel process, the spacing sensor being arranged on front part of vehicle continues the road scanning vehicle front, and the wheel speed sensors of anti-blocking brake system gathers vehicle speed signal simultaneously, and the distance S between vehicle and front truck is less than calibration value S
otime, entire car controller reclaims torque command to electric machine controller by sending braking, and motor controller controls drive motor sends corresponding brake torque, reaches braking effect, adaptive cruise control system and drive motor coordination, make vehicle and front truck remain safety distance;
When the generated output of drive motor is not enough or drive motor breaks down cannot meet brake request time, adaptive cruise control system and anti-blocking brake system coordination, brake wheel, makes vehicle and front truck remain safety distance.
Described calibration value So determines according to current vehicle speed V and concrete vehicle.
The defining method of brake torque is:
According to the reference function table between the torque rating M of vehicle determination vehicle velocity V, distance S between vehicle and front truck and motor; When the speed of a motor vehicle is constant, the torque rating of motor increases along with the reduction of the distance between vehicle and front truck, when the distance between vehicle and front truck is constant, and, the torque rating of motor increases along with the reduction of the speed of a motor vehicle.
When the generated output of drive motor is not enough or drive motor breaks down cannot meet brake request time, adaptive cruise control system and anti-blocking brake system coordination, make wheel suitably brake, and makes vehicle and front truck remain safety distance.
The beneficial effect that the present invention produces is:
In the process of the automatic reduction of speed of adaptive cruise, the speed of a motor vehicle current according to the Distance geometry of radar Real-Time Monitoring and front truck judges, when needs slow down, entire car controller sends suitable moment of torsion to electric machine controller, preferential use motor braking reclaims electric energy, by the mode of Brake energy recovery, Energy Efficient is saved, for driving vehicle, improve the car load economy of electronlmobil, extend continual mileage, can be applicable to pure electric automobile, hybrid vehicle and fuel cell powered vehicle etc.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, more completely the present invention can be understood better.Accompanying drawing described herein is used to provide a further understanding of the present invention, and embodiment and explanation thereof, for explaining the present invention, do not form inappropriate limitation of the present invention.
Fig. 1 is the structural representation of a kind of brake energy recovering system based on adaptive cruise control system of the present invention;
Fig. 2 is the logic diagram of a kind of method for recovering brake energy based on adaptive cruise control system of the present invention.
In figure: 1, adaptive cruise control system ACC 2, spacing sensor 3, anti-blocking brake system ABS 4, entire car controller VCU 5, electric machine controller MCU 6, drive motor.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
A kind of brake energy recovering system based on adaptive cruise control system as shown in Figure 1, comprise adaptive cruise control system 1, spacing sensor 2, anti-blocking brake system 3, entire car controller 4, electric machine controller 5 and drive motor 6, spacing sensor 2 is connected with entire car controller 4 respectively with anti-blocking brake system 3, spacing signal between vehicle and front truck and current wheel speed signal are transferred to entire car controller 4, adaptive cruise control system 1 is connected with entire car controller 4, adaptive cruise control system 1 is by spacing signal and the spacing between wheel speed signal adjustment vehicle and front truck, entire car controller 4 is connected with drive motor 6 by electric machine controller 5.
As shown in Figure 2, control policy is specially the control method of the above-mentioned brake energy recovering system based on adaptive cruise control system:
In vehicle travel process, the spacing sensor being arranged on front part of vehicle continues the road scanning vehicle front, the wheel speed sensors of anti-blocking brake system gathers vehicle speed signal simultaneously, when distance S between vehicle and front truck is less than calibration value So, entire car controller reclaims torque command to electric machine controller by sending braking, motor controller controls drive motor sends corresponding brake torque, reach braking effect, adaptive cruise control system and drive motor coordination, make vehicle and front truck remain safety distance;
When the generated output of drive motor is not enough or drive motor breaks down cannot meet brake request time, adaptive cruise control system and anti-blocking brake system coordination, brake wheel, makes vehicle and front truck remain safety distance.
Described calibration value S
0determine according to current vehicle speed V and concrete vehicle, calibration value S
0demarcate according to different automobile types and obtain, such as, for certain vehicle, in function table, give tacit consent to the S that the speed of a motor vehicle checks in when 50km/h
0value is 100m.
The defining method of brake torque is:
According to the reference function table between the torque rating M of vehicle determination vehicle velocity V, distance S between vehicle and front truck and motor; When the speed of a motor vehicle is constant, the torque rating of motor increases along with the reduction of the distance between vehicle and front truck, when the distance between vehicle and front truck is constant, and, the torque rating of motor increases along with the reduction of the speed of a motor vehicle.Look into function table by current vehicle speed V and the distance S between Current vehicle and front truck to obtain, function table needs to carry out real vehicle and demarcates acquisition.Such as, for certain known vehicle, to give tacit consent to vehicle velocity V in function table be 50km/h, distance S when being 100m, motor status is generating state, and the torque rating of motor is 10Nm: then with this state A for benchmark, distance S often reduces 10m, moment of torsion increases 10Nm, namely vehicle velocity V is 50km/h, distance S when being 90m, and motor status is generating state, and the torque rating of motor is 20Nm;
Vehicle velocity V often reduces 10km/h, and moment of torsion reduces 2Nm, and namely vehicle velocity V is 40km/h, distance S when being 100m, and motor status is generating state, and the torque rating of motor is 8Nm; Otherwise vehicle velocity V is 60km/h, distance S when being 100m, and motor status is generating state, and the torque rating of motor is 12Nm.
When the generated output of drive motor 6 is not enough or drive motor 6 breaks down cannot meet brake request time, adaptive cruise control system 1 and anti-blocking brake system 3 coordination, make wheel suitably brake, make vehicle and front truck remain safety distance.
As mentioned above, embodiments of the invention are explained, obviously, as long as do not depart from fact inventive point of the present invention and effect, will be readily apparent to persons skilled in the art distortion, is also all included within protection scope of the present invention.
Claims (4)
1. the brake energy recovering system based on adaptive cruise control system, it is characterized in that, comprise adaptive cruise control system, spacing sensor, anti-blocking brake system, entire car controller, electric machine controller and drive motor, described spacing sensor is connected with described entire car controller respectively with described anti-blocking brake system, spacing signal between vehicle and front truck and current wheel speed signal are transferred to described entire car controller, described adaptive cruise control system is connected with described entire car controller, described adaptive cruise control system is by spacing signal and the spacing between wheel speed signal adjustment vehicle and front truck, described entire car controller is connected with drive motor by electric machine controller.
2. based on a method for recovering brake energy for adaptive cruise control system, it is characterized in that, concrete steps are:
In vehicle travel process, the spacing sensor being arranged on front part of vehicle continues the road scanning vehicle front, and the wheel speed sensors of anti-blocking brake system gathers vehicle speed signal simultaneously, and the distance S between vehicle and front truck is less than calibration value S
otime, entire car controller reclaims torque command to electric machine controller by sending braking, and motor controller controls drive motor sends corresponding brake torque, reaches braking effect, adaptive cruise control system and drive motor coordination, make vehicle and front truck remain safety distance;
When the generated output of drive motor is not enough or drive motor breaks down cannot meet brake request time, adaptive cruise control system and anti-blocking brake system coordination, brake wheel, makes vehicle and front truck remain safety distance.
3. the method for recovering brake energy based on adaptive cruise control system according to claim 2, is characterized in that, described calibration value S
odetermine according to current vehicle speed V and concrete vehicle.
4. the method for recovering brake energy based on adaptive cruise control system according to claim 2, is characterized in that, the defining method of brake torque is:
According to the reference function table between the torque rating M of vehicle determination vehicle velocity V, distance S between vehicle and front truck and motor; When the speed of a motor vehicle is constant, the torque rating of motor increases along with the reduction of the distance between vehicle and front truck, when the distance between vehicle and front truck is constant, and, the torque rating of motor increases along with the reduction of the speed of a motor vehicle.
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| CN201410743865.7A CN104608643A (en) | 2014-12-08 | 2014-12-08 | Brake energy recovery system and method based on adaptive cruise control system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828186A (en) * | 2015-12-04 | 2017-06-13 | 北汽福田汽车股份有限公司 | Electric automobile and its cruise control system and cruise control method |
| CN106945666A (en) * | 2017-04-28 | 2017-07-14 | 天津清智科技有限公司 | Automobile energy-saving control system |
| CN107054348A (en) * | 2017-04-28 | 2017-08-18 | 天津清智科技有限公司 | Automobile energy-saving control method |
| CN107472035A (en) * | 2017-08-22 | 2017-12-15 | 中通客车控股股份有限公司 | A kind of dual-motor electric car active brake energy-recuperation system and control method |
| CN107539314A (en) * | 2017-08-30 | 2018-01-05 | 安徽江淮汽车集团股份有限公司 | A kind of automotive self-adaptive cruise control method and system |
| CN108437849A (en) * | 2017-01-30 | 2018-08-24 | 福特全球技术公司 | Regeneration brake system and method |
| CN108528454A (en) * | 2018-03-30 | 2018-09-14 | 吉利汽车研究院（宁波）有限公司 | Method for recovering brake energy, brake energy recovering system and vehicle |
| CN108556846A (en) * | 2017-12-27 | 2018-09-21 | 潍柴动力股份有限公司 | The control method and control system of energy regenerating are slided for carrying out vehicle braking |
| WO2019024409A1 (en) * | 2017-07-31 | 2019-02-07 | 北京新能源汽车股份有限公司 | Adaptive cruise torque chain control method and apparatus, and automobile |
| CN109572439A (en) * | 2018-12-24 | 2019-04-05 | 广州小鹏汽车科技有限公司 | A kind of method for recovering brake energy, device and automobile |
| CN111376881A (en) * | 2018-12-29 | 2020-07-07 | 北京宝沃汽车有限公司 | Braking method and device applied to adaptive cruise and vehicle |
| CN112046466A (en) * | 2020-08-31 | 2020-12-08 | 上海伊控动力系统有限公司 | New energy automobile sliding energy recovery method based on road conditions |
| CN113895240A (en) * | 2021-10-11 | 2022-01-07 | 同济大学 | Hybrid electric vehicle coordinated regenerative braking control method based on brake pedal decoupling |
| CN113954645A (en) * | 2021-11-12 | 2022-01-21 | 合众新能源汽车有限公司 | Adaptive cruise control feedback brake torque monitoring method for electric automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106828186B (en) * | 2015-12-04 | 2019-11-22 | 北京宝沃汽车有限公司 | Electric car and its cruise control system and cruise control method |
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| CN108437849A (en) * | 2017-01-30 | 2018-08-24 | 福特全球技术公司 | Regeneration brake system and method |
| CN108437849B (en) * | 2017-01-30 | 2023-09-19 | 福特全球技术公司 | Regenerative braking system and method |
| CN106945666A (en) * | 2017-04-28 | 2017-07-14 | 天津清智科技有限公司 | Automobile energy-saving control system |
| CN107054348A (en) * | 2017-04-28 | 2017-08-18 | 天津清智科技有限公司 | Automobile energy-saving control method |
| WO2019024409A1 (en) * | 2017-07-31 | 2019-02-07 | 北京新能源汽车股份有限公司 | Adaptive cruise torque chain control method and apparatus, and automobile |
| CN107472035A (en) * | 2017-08-22 | 2017-12-15 | 中通客车控股股份有限公司 | A kind of dual-motor electric car active brake energy-recuperation system and control method |
| CN107472035B (en) * | 2017-08-22 | 2023-10-03 | 中通客车股份有限公司 | Active braking energy recovery system of double-motor electric bus and control method |
| CN107539314A (en) * | 2017-08-30 | 2018-01-05 | 安徽江淮汽车集团股份有限公司 | A kind of automotive self-adaptive cruise control method and system |
| CN108556846B (en) * | 2017-12-27 | 2020-03-06 | 潍柴动力股份有限公司 | Control method and control system for recovering braking and sliding energy of vehicle |
| CN108556846A (en) * | 2017-12-27 | 2018-09-21 | 潍柴动力股份有限公司 | The control method and control system of energy regenerating are slided for carrying out vehicle braking |
| CN108528454A (en) * | 2018-03-30 | 2018-09-14 | 吉利汽车研究院（宁波）有限公司 | Method for recovering brake energy, brake energy recovering system and vehicle |
| CN109572439A (en) * | 2018-12-24 | 2019-04-05 | 广州小鹏汽车科技有限公司 | A kind of method for recovering brake energy, device and automobile |
| CN111376881A (en) * | 2018-12-29 | 2020-07-07 | 北京宝沃汽车有限公司 | Braking method and device applied to adaptive cruise and vehicle |
| CN112046466A (en) * | 2020-08-31 | 2020-12-08 | 上海伊控动力系统有限公司 | New energy automobile sliding energy recovery method based on road conditions |
| CN113895240A (en) * | 2021-10-11 | 2022-01-07 | 同济大学 | Hybrid electric vehicle coordinated regenerative braking control method based on brake pedal decoupling |
| CN113954645A (en) * | 2021-11-12 | 2022-01-21 | 合众新能源汽车有限公司 | Adaptive cruise control feedback brake torque monitoring method for electric automobile |
| CN113954645B (en) * | 2021-11-12 | 2023-06-23 | 合众新能源汽车股份有限公司 | Self-adaptive cruise control feedback braking torque monitoring method for electric automobile |
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