CN103407486A - Automobile electric power assistance steering control system - Google Patents
Automobile electric power assistance steering control system Download PDFInfo
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- CN103407486A CN103407486A CN2013103503239A CN201310350323A CN103407486A CN 103407486 A CN103407486 A CN 103407486A CN 2013103503239 A CN2013103503239 A CN 2013103503239A CN 201310350323 A CN201310350323 A CN 201310350323A CN 103407486 A CN103407486 A CN 103407486A
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Abstract
The invention discloses an automobile electric power assistance steering control system. The automobile electric power assistance steering control system comprises a plurality of sensors for transmitting real-time automobile signals, an electric power assistance steering master controller MCU (microprogrammed control unit) for collecting the signals of the sensors and motor current feedback signals and making response, a first power source chip for powering the master controller MCU, an electric power assistance motor driving circuit and an electric power assistance motor and is characterized by further comprising a completely independent electric power assistance steering monitoring system for monitoring the input and output and the program running state of the electric power assistance steering master controller MCU in real time. Therefore, the automobile electric power assistance steering control system has the advantages of effectively avoiding the traffic accidents due to error power assistance or no power assistance of the power assistance steering control system, which are caused by failure of the controller; once detecting abnormality, the monitoring system can cut off the power assistance to enable an automobile to restore to a purely mechanical steering mode and thereby the safety level of the entire system can be greatly improved.
Description
Technical field
The present invention relates to a kind of Electric Power Steering Control System, belong to the Vehicle Electronic Control field, relate in particular to a kind of Electric Power Steering Control System of Automobile.
Background technology
In recent years, along with the increase gradually of automobile pollution, the traffic on road becomes more intricate, makes the frequency of pilot control steering handwheel constantly increase, and driving will make chaufeur feel tired slightly for a long time.For the hand-held design and the alerting ability that improve handling maneuver, servo steering system is arisen at the historic moment.
Current servo steering system on the market mainly contains hydraulic power-assist steering system, electron steering hydraulic power-assist steering system, electric boosting steering system.Though the electric power steering development time is shorter, rely on the large I of its power-assisted with the speed of a motor vehicle automatically adjust, assemble simply, do not consume energy while not turning to, without advantage share of market such as hydraulic oil environmentally safes in continuous increase.
Feel when controller is directly being controlled the size, direction of power-assisted and pilot control steering handwheel as the core component of electric boosting steering system.Yet controller was in case lost efficacy, whole servo steering system will non helping hand or is given the power-assisted made mistake, and is directly threatening the safety traffic on chaufeur and road.Therefore, the security strategy of improving controller of exhausting one's ability, the most important thing the when safe class of raising controller becomes the controller soft hardware design.
Referring to Fig. 1, what in figure, provide is the electric boosting steering system generally adopted now, comprise some be used to transmitting the sensor of automobile live signal, the electric power steering master controller MCU of one steering wheel moment signal 1, steering wheel angle signal 2, vehicle speed signal 3, engine rotational speed signal 4, ignition signal 5 and the current of electric feedback signal 9 transmitted for pick-up transducers, first power supply chip for master controller MCU power supply, an assist motor driving circuit 7, an assist motor 8.
The first power supply chip is master controller MCU power supply, the steering wheel moment signal 1 that master controller MCU pick-up transducers transmits, steering wheel angle signal 2, vehicle speed signal 3, engine rotational speed signal 4, ignition signal 5 and current of electric feedback signal 9, Power assisted control algorithm through main controller system MCU storage inside calculates output motor controlling quantity afterwards, after assist motor driving circuit 7, drives assist motor 8 and provides power-assisted for chaufeur.
The present invention is mainly by original Electric Power Steering Control System, increasing a fully independently monitored control system, monitor in real time input/output signal and the running state of programs of former controller, if monitor abnormal, monitored control system can disconnect power-assisted, make vehicle return in time pure mechanical steering, thereby reached the purpose that has greatly improved the whole system safe class.
Summary of the invention
Technical matters to be solved by this invention: unstable, the deficiency such as safe class is low existed for existing controller and a kind of Electric Power Steering Control System of Automobile that improves the safe class of controller is provided.
Technical matters solved by the invention can realize by the following technical solutions:
A kind of Electric Power Steering Control System of Automobile comprises:
Some be used to transmitting the sensor of automobile live signal;
One be used to the signal that gathers described sensor and current of electric feedback signal the electric power steering master controller MCU that makes a response;
One is the first power supply chip of described master controller MCU power supply;
One assist motor driving circuit;
One assist motor;
It is characterized in that, also comprise that one fully independently for monitoring in real time the input and output of described electric power steering master controller MCU and the electric power steering monitored control system of running state of programs thereof.
In a preferred embodiment of the invention, described monitored control system comprises a supervisory control device MCU, a second source chip and a circuit breaker.Described second source chip one end is connected with external power supply, and the other end is connected with described supervisory control device MCU.Described circuit breaker one end is connected with external power supply, and the other end is connected with described assist motor driving circuit.
In a preferred embodiment of the invention, described second source chip is separately supervisory control device MCU power supply.
In a preferred embodiment of the invention, described supervisory control device MCU and described master controller MCU regularly pass through serial data bus interface TXD and RXD communicates verification.
Owing to having adopted technical scheme as above, beneficial effect of the present invention is: effectively avoided causing servo-steering control system non helping hand or the traffic accident caused to the power-assisted made mistake because controller loses efficacy; If monitored control system detects extremely, monitoring system can disconnect power-assisted, makes vehicle return in time pure mechanical steering, thereby has reached the purpose that has greatly improved the whole system safe class.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of the electric boosting steering system of common employing.
Fig. 2 is schematic diagram of the present invention.
Fig. 3 is circuit diagram of the present invention.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 2 and Fig. 3, the present invention has increased a fully independently monitored control system 12 on the basis of original electric boosting steering system, monitored control system comprises a supervisory control device MCU121, second source chip U2 and a circuit breaker S2 who powers for supervisory control device MCU separately.Second source chip one end is connected with external power supply, and the other end is connected with supervisory control device MCU121.Circuit breaker S2 mono-end is connected with external power supply, and the other end is connected with assist motor driving circuit 7.
Supervisory control device MCU121 is its power supply by independent second source chip U2, like this, even the first power supply chip U1 of main controller system MCU6 lost efficacy, cause main controller system MCU6 operation irregularity, the work of monitoring main controller system MCU6 also can be fully unaffected, and can by circuit breaker S2, disconnect the power supply input of assist motor 8, make vehicle return to pure mechanical steering state.
Monitored control system 12 is monitored the incoming signal 1～5 of Electric Power Steering Control System and the current feedback signal 9 of assist motor 8 in real time, and these signals have exceeded normal operating range if confirm, but cut-off breaker S2 stops power-assisted.
In addition, supervisory control device MCU121 and master controller MCU6 regularly pass through general serial data bus interface TXD10 and RXD11 communicates verification, supervisory control device MCU12 sends a handshake data bag every a regular time master controller MCU6, waits for that then master controller MCU6 makes correct replying in specific time.If master controller MCU6 nonreply or fail to make correct replying within specific time, think that deadlock or the race of master controller MCU6 micro controller system internal processes flies, supervisory control device MCU121 now can disconnect the power supply supply of assist motor driving circuit 7 by circuit breaker S2, make system be switched to the state of a safety.
In like manner, master controller MCU6 also sends a handshake data bag every a regular time to supervisory control device MCU121 by the general serial data bus, waits for that then supervisory control device MCU121 makes correct replying in specific time.If supervisory control device MCU121 nonreply or fail to make correct replying within specific time, think that deadlock or the race of supervisory control device MCU121 micro controller system internal processes flies.Now supervisory control device MCU121 is just no longer reliable, and the safe class of whole system will descend to some extent, so master controller MCU6 can guard and control or direct cut-off breaker S1, and assist motor 8 is quit work.
Above demonstration and described groundwork of the present invention and principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. Electric Power Steering Control System of Automobile comprises:
Some be used to transmitting the sensor of automobile live signal;
One be used to the signal that gathers described sensor and current of electric feedback signal the electric power steering master controller MCU that makes a response;
One is the first power supply chip of described master controller MCU power supply;
One assist motor driving circuit;
One assist motor;
It is characterized in that, also comprise that one fully independently for monitoring in real time the input and output of described electric power steering master controller MCU and the electric power steering monitored control system of running state of programs thereof.
2. a kind of Electric Power Steering Control System as claimed in claim 1, it is characterized in that, described monitored control system comprises a supervisory control device MCU, a second source chip and a circuit breaker, described second source chip one end is connected with external power supply, the other end is connected with described supervisory control device MCU, described circuit breaker one end is connected with external power supply, and the other end is connected with described assist motor driving circuit.
3. a kind of Electric Power Steering Control System as claimed in claim 2, is characterized in that, described second source chip is separately supervisory control device MCU power supply.
4. a kind of Electric Power Steering Control System as claimed in claim 2 or claim 3, is characterized in that, described supervisory control device MCU and described master controller MCU regularly pass through serial data bus interface TXD and RXD communicates verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310350323.9A CN103407486B (en) | 2013-08-12 | 2013-08-12 | A kind of Electric Power Steering Control System of Automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310350323.9A CN103407486B (en) | 2013-08-12 | 2013-08-12 | A kind of Electric Power Steering Control System of Automobile |
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| CN103407486A true CN103407486A (en) | 2013-11-27 |
| CN103407486B CN103407486B (en) | 2016-01-27 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078332A1 (en) * | 2013-11-29 | 2015-06-04 | Byd Company Limited | Electric forklift, steering control system used for the same and method for controlling electric forklift |
| CN105128925A (en) * | 2015-09-08 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Electric power steering control system of automobile |
| CN105645315A (en) * | 2016-01-05 | 2016-06-08 | 浙江工业大学 | Electric power steering control method for three-fulcrum forklift |
| CN107380257A (en) * | 2017-07-28 | 2017-11-24 | 安徽江淮汽车集团股份有限公司 | A kind of semiautomatic parking control method and system |
| CN108622188A (en) * | 2018-04-28 | 2018-10-09 | 中通客车控股股份有限公司 | A kind of integral new-energy passenger servo steering system and control method |
| CN110576899A (en) * | 2018-06-11 | 2019-12-17 | 沈阳思创通用电气有限公司 | Power-assisted steering motor controller |
| CN114348104A (en) * | 2021-12-29 | 2022-04-15 | 北京肃为科技有限公司 | Electric steering control and driving system |
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| CN101308383B (en) * | 2008-07-08 | 2010-08-18 | 同济大学 | Electric power-assisted steering control method and system |
| CN201901171U (en) * | 2010-09-28 | 2011-07-20 | 上海航天汽车机电股份有限公司 | Electric power-assisted steering control system adopting dual-microcomputer to jointly control relay |
| CN103010299A (en) * | 2012-12-14 | 2013-04-03 | 奇瑞汽车股份有限公司 | Electric power-assisted steering system of automobile |
| CN103219986A (en) * | 2013-03-04 | 2013-07-24 | 海信科龙电器股份有限公司 | Polarity insensitive transmit-receive unit and RS-485 communication circuit |
| CN203439105U (en) * | 2013-08-12 | 2014-02-19 | 东方久乐汽车电子（上海）有限公司 | Automobile electric power assisted steering control system |
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2013
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Patent Citations (6)
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| US6373217B1 (en) * | 1999-07-02 | 2002-04-16 | Nsk Ltd. | Control apparatus of electric power steering system |
| CN101308383B (en) * | 2008-07-08 | 2010-08-18 | 同济大学 | Electric power-assisted steering control method and system |
| CN201901171U (en) * | 2010-09-28 | 2011-07-20 | 上海航天汽车机电股份有限公司 | Electric power-assisted steering control system adopting dual-microcomputer to jointly control relay |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078332A1 (en) * | 2013-11-29 | 2015-06-04 | Byd Company Limited | Electric forklift, steering control system used for the same and method for controlling electric forklift |
| CN105128925A (en) * | 2015-09-08 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Electric power steering control system of automobile |
| CN105645315A (en) * | 2016-01-05 | 2016-06-08 | 浙江工业大学 | Electric power steering control method for three-fulcrum forklift |
| CN107380257A (en) * | 2017-07-28 | 2017-11-24 | 安徽江淮汽车集团股份有限公司 | A kind of semiautomatic parking control method and system |
| CN108622188A (en) * | 2018-04-28 | 2018-10-09 | 中通客车控股股份有限公司 | A kind of integral new-energy passenger servo steering system and control method |
| CN108622188B (en) * | 2018-04-28 | 2024-05-07 | 中通客车股份有限公司 | New energy bus power-assisted steering system and control method |
| CN110576899A (en) * | 2018-06-11 | 2019-12-17 | 沈阳思创通用电气有限公司 | Power-assisted steering motor controller |
| CN114348104A (en) * | 2021-12-29 | 2022-04-15 | 北京肃为科技有限公司 | Electric steering control and driving system |
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| Publication number | Publication date |
|---|---|
| CN103407486B (en) | 2016-01-27 |
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Address after: 201201 1, 4 building, 219 Pudong New Area Road, Shanghai. Patentee after: EAST JOY LONG AUTOMOBILE ELECTRONIC (SHANGHAI) CO.,LTD. Address before: 201201 1, 4 building, 219 Pudong New Area Road, Shanghai. Patentee before: EAST JOY LONG AUTOMOBILE ELECTRONICS (SHANGHAI) CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180802 Address after: 334100 Jiangxi Shangrao Shangrao economic and Technological Development Zone Cai Cheng Auto parts base 7 workshop Patentee after: JIANGXI HEZHEN AUTO PARTS CO.,LTD. Address before: 201201 1, 4 building, 219 Pudong New Area Road, Shanghai. Patentee before: EAST JOY LONG AUTOMOBILE ELECTRONIC (SHANGHAI) CO.,LTD. |
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Effective date of registration: 20210915 Address after: 200120 building 4, No. 309, Renqing Road, Heqing Town, Pudong New Area, Shanghai Patentee after: EAST JOY LONG AUTOMOBILE ELECTRONIC (SHANGHAI) Co.,Ltd. Address before: 334100 Jiangxi Shangrao Shangrao economic and Technological Development Zone Cai Cheng Auto parts base 7 workshop Patentee before: JIANGXI HEZHEN AUTO PARTS Co.,Ltd. |
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| TR01 | Transfer of patent right |