CN2753645Y - Electric power-assisting steering electronic controller - Google Patents
Electric power-assisting steering electronic controller Download PDFInfo
- Publication number
- CN2753645Y CN2753645Y CN 200420114049 CN200420114049U CN2753645Y CN 2753645 Y CN2753645 Y CN 2753645Y CN 200420114049 CN200420114049 CN 200420114049 CN 200420114049 U CN200420114049 U CN 200420114049U CN 2753645 Y CN2753645 Y CN 2753645Y
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- China
- Prior art keywords
- electric power
- power steering
- electronic controller
- electric
- micro controller
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- Expired - Lifetime
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Abstract
The utility model discloses an electric power-assisting steering electronic controller which comprises a single chip computer, a vehicle speed signal collecting and processing unit, an engine speed collecting and processing unit, a steering wheel torque collecting and processing unit, a motor drive unit, a failure handling and detecting device which is connected with the single chip computer, and an alarm output device which can be used for receiving control signals of the single chip computer and can be used for sending out alarm signals. The utility model can be used for processing and detecting failures, and can be used for receiving external control signals to control the steering of an automobile. Besides, the utility model can provide optimized steering power-assisted torque according to different speeds, therefore the portability and the lightness when the automobile runs at a low speed are ensured, the stability and the reliability when the automobile runs at a high speed are ensured, the operating feeling for hands is comfortable, and a clutch and a power switch can be cut off to ensure the safety when a failure occurs.
Description
Technical field
The utility model relates to a kind of electric power steering electronic controller.
Background technology
The restriction and the seepage of hydraulic oil that traditional hydraulic power-assist steering system all is subjected at aspects such as system layout, installation, leak tightness, control sensitivity, expenditure of energy, wearing and tearing and noises to a certain degree also are very big potential safety hazard, often maintaining.Electron controlling mechanical-hydraulic power steering system can't be eradicated the intrinsic shortcoming of hydraulic power steering system equally.And the electronic control type electric boosting steering system fully phases out hydraulic efficiency gear, replaces the hydraulic pressure energy with electric energy, has reduced the expenditure of energy of driving engine.The research and development electric boosting steering system, be with development of automobile in safety, environmental protection, energy-conservation three big themes match.
The electronic controller of existing electric power-assisted steering apparatus comprises some sensors, micro controller system and electric-motor drive unit.Respectively this sensor obtains current vehicle operating parameter, and pass to this micro controller system, this micro controller system obtains the size of current and the direction of assist motor according to these parameters, and this electric-motor drive unit is accepted the size of current that micro controller system transmits and the signal of direction, and then the control motor.
The defective of above-mentioned prior art is: when system broke down, the just simple operation that stops device can not be diagnosed the type of fault, and can not accept exterior control signal and come turning to of Control of Automobile.
Summary of the invention
The purpose of this utility model is the defective that overcomes above-mentioned prior art, and a kind of later-model electric power steering electronic controller is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of electric power steering electronic controller, comprise a micro controller system, vehicle speed signal collection and processing unit, engine speed collection and processing unit, steering wheel moment collection and processing unit, an electric-motor drive unit, its control signal that comprises that also a fault handling that links to each other with this micro controller system and diagnostic device and one accept this micro controller system can send the alarm output device of alerting signal.
Wherein, this fault handling and diagnostic device comprise: a memory cell, and this cell stores has failure code, and when breaking down, micro controller system carries out corresponding failure code so that removal system fault or halt system running; A low speed insulation bus communication circuit, this micro controller system sends failure code by this low speed insulation bus circuit to special purpose machinery, carries out trouble diagnosing.
This memory cell is an EEPROM.
Wherein, this electric power steering electronic controller also comprises a field bus control system communicating circuit, and it receives the control signal of upper computer, and passes to this micro controller system.
Wherein, this electric power steering electronic controller also comprises current of electric, voltage acquisition and a processing unit, and electric current and voltage that it is gathered when front motor feed back to this micro controller system.
Wherein, this current of electric, voltage acquisition and processing unit are the circuit that adopts constantan resistance.
This micro controller system is the micro controller system with eight cores.
The H bridge loop that this electric-motor drive unit is made up of four high-power field effect transisters.
In addition, this electric power steering electronic controller also comprises the controller housing of a full cast aluminium structure.
Positive progressive effect of the present utility model is: can carry out fault handling and diagnosis, and can accept external control signal, turning to of Control of Automobile, can provide optimized power steering moment of torsion according to the different speed of a motor vehicle, guarantee automobile light and flexible when low speed driving, reliable and stable when running at high speed, control comfortable feel, and can be when breaking down cut-off clutch and source switch to guarantee safety.
Description of drawings
Fig. 1 is the device block scheme of the utility model one embodiment.
Fig. 2 is the flow diagram of the utility model one embodiment.
Fig. 3 is the H bridge loop scheme drawing of the utility model one embodiment.
The specific embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
A kind of electric power steering electronic controller, as shown in Figure 1, it comprises:
A micro controller system 1, it brings into operation after obtaining ignition signal, and this micro controller system 1 is the PIC micro controller system with eight cores, has running velocity height, strong, the succinct characteristics of external tapping circuit of low in energy consumption, power-handling capability;
Vehicle speed signal collection and processing unit 2, it is gathered the current speed of a motor vehicle and also is processed into electric signal, passes to this micro controller system 1;
Engine speed collection and processing unit 3, it is gathered current engine speed and also is processed into electric signal transmission and gives this micro controller system 1;
Steering wheel moment collection and processing unit 4, it is gathered the moment of torsion on the current steering handwheel output shaft and is processed into electric signal transmission and gives this micro controller system 1;
Fault handling and diagnostic device comprise: a memory cell 10, and this memory cell 10 stores failure code, and when breaking down, micro controller system 1 carries out corresponding failure code so that removal system fault or halt system running; A low speed insulation bus communication circuit 7, this micro controller system 1 sends failure code by this low speed insulation bus circuit 7 to special purpose machinery, carries out trouble diagnosing.
An alarm output device 11, the control signal that it accepts this micro controller system 1 sends alerting signal.
Wherein, this memory cell 10 can be an EEPROM.
This controller also comprises a field bus control system communicating circuit 6, and it receives the control signal of upper computer, and passes to this micro controller system 1, realizes turning to from the external control automobile.
This controller also comprises a current of electric, voltage acquisition and processing unit 5, electric current and voltage that it is gathered when front motor feed back to this micro controller system 1, adopt constantan resistance in the circuit of this current of electric, voltage acquisition and processing unit 5, resistance coefficient is little, stable performance.
An electric-motor drive unit 8, it accepts the control signal of micro controller system 1, make motor 9 forward or reverse, the H bridge loop that this electric-motor drive unit 8 is made up of four high-power field effect transisters, as shown in Figure 3, transistor a and transistor b, transistor c and transistor d are all carried out control by pulses, and after transistor a and transistor b stop, transistor c and transistor d still want conducting a period of time, for motor 9 provides continuous current circuit.When needs motor 9 is just changeing, the transistor a in the H bridge drive circuit, transistor d conducting simultaneously, electric current is pressed I
M1Loop stream, but after transistor a ended, transistor d can continue conducting a period of time, and motor 9 electric currents form loop I by the transistor d of conducting and the reverse parallel connection diode of transistor c
L, for motor 9 provides continuous current circuit.In like manner, when 9 counter-rotatings of needs motor, the transistor b in the H bridge drive circuit, transistor c conducting simultaneously, electric current is pressed I
M2Loop stream, but after transistor b ended, the c pipe can continue conducting a period of time, and motor 9 electric currents are by the transistor c of conducting and the reverse parallel connection diode formation loop I of transistor d
L, for motor 9 provides continuous current circuit.
In addition, this controller also comprises the controller housing of a full cast aluminium structure, is more conducive to heat radiation.
As shown in Figure 2, be the control flow of native system, controller according to the moment of steering handwheel and direction, engine rotational speed signal and vehicle speed signal are determined and control to the drive current direction and the size of motor 9.Make and under each speed of a motor vehicle, can obtain optimized power steering moment of torsion.Native system is not taked in the method that limits the above cut-off clutch of the speed of a motor vehicle, but takes power operated control to reduce gradually with the increase of the speed of a motor vehicle, prevents the not steady situation when the speed of a motor vehicle is in critical conditions.When the speed of a motor vehicle increased to certain value, motor 9 stopped power-assisted.This device has fault self-diagnosis function, when the basic element of character of the system of detecting such as power supply, torque sensor, motor 9 (containing power-transfer clutch), car speed sensor, when engine speed sensors etc. break down, micro controller system is carried out the corresponding failure code of storage in advance, the concurrent indicator signal that is out of order.System disconnects magnetic clutch, and cuts off controller power-assisted power supply, stops power steering control, guarantees safety, reliable.
Claims (9)
1, a kind of electric power steering electronic controller, comprise a micro controller system, vehicle speed signal collection and processing unit, engine speed collection and processing unit, steering wheel moment collection and processing unit, an electric-motor drive unit, it is characterized in that its control signal that comprises that also a fault handling that links to each other with this micro controller system and diagnostic device and one accept this micro controller system can send the alarm output device of alerting signal.
2, electric power steering electronic controller according to claim 1, it is characterized in that, this fault handling and diagnostic device comprise: a memory cell, this cell stores has failure code, when breaking down, micro controller system carries out corresponding failure code so that removal system fault or halt system running; A low speed insulation bus communication circuit, this micro controller system sends failure code by this low speed insulation bus circuit to special purpose machinery, carries out trouble diagnosing.
3, electric power steering electronic controller according to claim 2 is characterized in that, this memory cell is an EEPROM.
4, electric power steering electronic controller according to claim 3 is characterized in that, it also comprises a field bus control system communicating circuit, and it receives the control signal of upper computer, and passes to this micro controller system.
5, electric power steering electronic controller according to claim 4 is characterized in that, it also comprises current of electric, voltage acquisition and a processing unit, and electric current and voltage that it is gathered when front motor feed back to this micro controller system.
6, electric power steering electronic controller according to claim 5 is characterized in that, this current of electric, voltage acquisition and processing unit are the circuit that adopts constantan resistance.
7, electric power steering electronic controller according to claim 6 is characterized in that, this micro controller system is the micro controller system with eight cores.
8, electric power steering electronic controller according to claim 7 is characterized in that, the H bridge loop that this electric-motor drive unit is made up of four high-power field effect transisters.
9, electric power steering electronic controller according to claim 8 is characterized in that, it also comprises the controller housing of a full cast aluminium structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114049 CN2753645Y (en) | 2004-12-10 | 2004-12-10 | Electric power-assisting steering electronic controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114049 CN2753645Y (en) | 2004-12-10 | 2004-12-10 | Electric power-assisting steering electronic controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2753645Y true CN2753645Y (en) | 2006-01-25 |
Family
ID=35925752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420114049 Expired - Lifetime CN2753645Y (en) | 2004-12-10 | 2004-12-10 | Electric power-assisting steering electronic controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2753645Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520014B (en) * | 2008-02-28 | 2010-12-22 | 华夏龙晖（北京）汽车电子科技有限公司 | 32-bit electronic control unit for four-cylinder gasoline engine |
| CN101327788B (en) * | 2007-06-19 | 2011-07-06 | 比亚迪股份有限公司 | Electric booster braking system |
| CN101456429B (en) * | 2007-12-13 | 2012-08-22 | 现代自动车株式会社 | Method for controlling drive force steering system of motor |
| CN103079934A (en) * | 2010-09-28 | 2013-05-01 | 铃木株式会社 | Electric vehicle steering mechanism |
| CN103112495A (en) * | 2013-02-02 | 2013-05-22 | 哈尔滨工业大学 | Novel automobile electric power steering fault-tolerant control device and method |
| CN105339240A (en) * | 2013-10-01 | 2016-02-17 | 日本精工株式会社 | Electric power steering device |
| CN109334655A (en) * | 2018-11-30 | 2019-02-15 | 商丘师范学院 | A kind of method of adjustment making vehicle steadily using driving parameters |
| WO2023283764A1 (en) * | 2021-07-12 | 2023-01-19 | 舍弗勒技术股份两合公司 | Power source control circuit and power steering system |
-
2004
- 2004-12-10 CN CN 200420114049 patent/CN2753645Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327788B (en) * | 2007-06-19 | 2011-07-06 | 比亚迪股份有限公司 | Electric booster braking system |
| CN101456429B (en) * | 2007-12-13 | 2012-08-22 | 现代自动车株式会社 | Method for controlling drive force steering system of motor |
| CN101520014B (en) * | 2008-02-28 | 2010-12-22 | 华夏龙晖（北京）汽车电子科技有限公司 | 32-bit electronic control unit for four-cylinder gasoline engine |
| CN103079934A (en) * | 2010-09-28 | 2013-05-01 | 铃木株式会社 | Electric vehicle steering mechanism |
| CN103079934B (en) * | 2010-09-28 | 2016-02-10 | 铃木株式会社 | The steering swivel system of motor car |
| CN103112495A (en) * | 2013-02-02 | 2013-05-22 | 哈尔滨工业大学 | Novel automobile electric power steering fault-tolerant control device and method |
| CN105339240A (en) * | 2013-10-01 | 2016-02-17 | 日本精工株式会社 | Electric power steering device |
| CN105339240B (en) * | 2013-10-01 | 2017-02-22 | 日本精工株式会社 | Electric power steering device |
| CN109334655A (en) * | 2018-11-30 | 2019-02-15 | 商丘师范学院 | A kind of method of adjustment making vehicle steadily using driving parameters |
| WO2023283764A1 (en) * | 2021-07-12 | 2023-01-19 | 舍弗勒技术股份两合公司 | Power source control circuit and power steering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141210 Granted publication date: 20060125 |