CN201494496U - Automobile power-assisted steering sensor signal processing unit - Google Patents
Automobile power-assisted steering sensor signal processing unit Download PDFInfo
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- CN201494496U CN201494496U CN2009203078943U CN200920307894U CN201494496U CN 201494496 U CN201494496 U CN 201494496U CN 2009203078943 U CN2009203078943 U CN 2009203078943U CN 200920307894 U CN200920307894 U CN 200920307894U CN 201494496 U CN201494496 U CN 201494496U
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Abstract
The utility model discloses an automobile power-assisted steering sensor signal processing unit, which solves the problems that the torque sensor of the existing steering system needs to be adjusted caused by the deviation due to the machining, assembly or wear and other reasons, and is troublesome to adjust. The automobile power-assisted steering sensor signal processing unit comprises a master controller, and is characterized in that the master controller is internally provided with a signal generation unit, the signal generation unit is connected with a magnet exciting coil on the automobile steering column, the magnet exciting coil is simultaneously and electrically connected with a central processing unit, the central processing unit is electrically connected with the master controller, the master controller is internally provided with an automatic zeroing unit, and the automatic zeroing unit is connected with a zeroing line for being grounded.
Description
Technical field
The utility model relates to a kind of signal processing unit, relates in particular to a kind of automobile assisted power steering sensor signal processing unit.
Background technology
Automobile electric booster steering system is a kind of drive assistance device that generally adopts on the car, and it has improved the driver comfort of automobile.Have torque sensor in the electric boosting steering system, this torque sensor is used for the deflection angle of perception car steering tube column, and sends a signal to servo steering system, so that servo steering system provides power steering for steering column.Torque sensor in the present automobile electric booster steering system, adopt a kind of torque sensor of mechanical slide potentiometer mostly, this sensor is easy to generate the sensor sideslip because of wearing and tearing or the assembling reason between the machinery arranged, service life neither be very long, for its replacing trouble that also seems.Therefore develop a kind of new wearing and tearing that do not produce, long service life, reliable sensor is very important to electric boosting steering system.
Summary of the invention
At above-mentioned shortcoming, the utility model technical issues that need to address are: a kind of automobile assisted power steering sensor signal processing unit is provided, it can guarantee that sensor can transfer out signal comparatively accurately, and being convenient to servo steering system provides the power-assisted effect for the driving of automobile, and operation is very easy.
For solveing the technical problem, the technical solution of the utility model: a kind of automobile assisted power steering sensor signal processing unit, comprise master controller, it is characterized in that, be provided with signal generating unit in the described master controller, signal generating unit is connected with excitation coil on being installed in car steering tube column, excitation coil is connected with central process unit simultaneously, central process unit is connected with master controller, be provided with the automatic zero set unit in the master controller, be connected with one on the automatic zero set unit and be used for connected to chassis zeroing line.This automobile assisted power steering sensor signal processing unit in use, signal generating unit sends the signal of fixed frequency to excitation coil, when turning to tubing string to deflect in the vehicle drive process, field voltage on the excitation coil can change along with the difference that turns to torque, central process unit sends to servo steering system master controller through logic analysis, after judging with stable torque signal according to resulting signal, so that provide auxiliary force accurately for turning to of steering column.When making mechanics generation deviation because of part displacements or assembly problem, the signal and the standard signal of the excitation coil that zeroing unit will be tested are compared, if deviation, can utilize zeroing line ground connection, this deviation is compensated at the signal of sensor end, to subdue the negative effect that deviation that mechanics produces is brought the servo steering system normal operation.
As preferably, between excitation coil and central process unit, be provided with signal processing unit.This signal processing unit is used to accept the variable signal that excitation coil produces, and this variable signal is carried out filter shape handle, to simplify the computing of central process unit to this signal.
As preferably, between signal processing unit and central process unit, be provided with the computing amplifying unit.The computing amplifying unit is used for the treated signal that the received signal processing unit is sent, and the computing amplifying unit amplifies this signal, collects and judges and computing so that central process unit carries out accurately sieve to this signal.
The beneficial effects of the utility model are embodied in:
Can carry out conversion process to mechanical signal, can provide torque sensor signal for electric booster steering controller simultaneously.This electronic control unit, can not only provide a kind of reliable and stable torque signal for central process unit accurately, also has the automatic zero set function simultaneously, the energy error that the correction-compensation mechanical aspects produces sensor because of processing, assembling and part displacements on output signal automatically, do not need corresponding mechanical part is disassembled, again the relative position between them is adjusted, operation is very easy, do not have mechanical wear, prolonged the service life of sensor.
Description of drawings
Fig. 1 is the fundamental diagram of the utility model automobile assisted power steering sensor signal processing unit.
The specific embodiment
The utility model automobile assisted power steering sensor signal processing unit structure comprises master controller 8, be provided with signal generating unit 2 in the described master controller 8, signal generating unit 2 is connected with excitation coil 6 on being installed in car steering tube column, excitation coil 6 is connected with central process unit 1 simultaneously, central process unit 1 is connected with master controller 8, be provided with automatic zero set unit 5 in the master controller 8, be connected with one on the automatic zero set unit 5 and be used for connected to chassis zeroing line 7.Between excitation coil 6 and central process unit 1, link to each other successively and be connected to signal processing unit 4 and computing amplifying unit 3.
The principle of work of this automobile assisted power steering sensor signal processing unit is as follows: when controller 8 is started working, digital signal generating unit 2 sends to excitation coil 6 with the digital signal of the fixed frequency of generation, when mechanical steering partly carries out divertical motion, corresponding variation can take place with the variation that turns to torque in the field voltage of excitation coil, signal processing unit 4 send computing amplifying unit 3 with this variable signal after receiving signal after filter shape is handled, signal after computing is amplified send central process unit 1, and central process unit 1 sends to electric boosting steering system master controller 8 with reliable and stable torque signal after logic analysis and judgement.Automatic zero set unit 5 compares the excitation coil signal and the standard signal of test simultaneously, when deviation occurring, promptly send deviation signal, this moment line 7 ground connection of will returning to zero, automatic zero set unit 5 just can carry out correction-compensation to signal automatically to be handled, so that the signal that sensor sends can reflect the actual deflection angle of steering column, being convenient to electric boosting steering system provides power steering accurately for steering column.
Claims (3)
1. automobile assisted power steering sensor signal processing unit, comprise master controller, it is characterized in that, be provided with signal generating unit (2) in the described master controller (8), signal generating unit (2) is connected with excitation coil (6) on being installed in car steering tube column, excitation coil (6) is electrically connected with central process unit (1) simultaneously, central process unit (1) is connected with master controller (8), be provided with automatic zero set unit (5) in the master controller (8), be connected with one on automatic zero set unit (5) and be used for connected to chassis zeroing line (7).
2. automobile assisted power steering sensor signal processing unit according to claim 1 is characterized in that, is provided with signal processing unit (4) between excitation coil (6) and central process unit (1).
3. automobile assisted power steering sensor signal processing unit according to claim 2 is characterized in that, is provided with computing amplifying unit (3) between signal processing unit (4) and central process unit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203078943U CN201494496U (en) | 2009-08-13 | 2009-08-13 | Automobile power-assisted steering sensor signal processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203078943U CN201494496U (en) | 2009-08-13 | 2009-08-13 | Automobile power-assisted steering sensor signal processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201494496U true CN201494496U (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203078943U Expired - Fee Related CN201494496U (en) | 2009-08-13 | 2009-08-13 | Automobile power-assisted steering sensor signal processing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201494496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530056A (en) * | 2010-12-31 | 2012-07-04 | 财团法人车辆研究测试中心 | Self-adjusting method for electric auxiliary steering system |
-
2009
- 2009-08-13 CN CN2009203078943U patent/CN201494496U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530056A (en) * | 2010-12-31 | 2012-07-04 | 财团法人车辆研究测试中心 | Self-adjusting method for electric auxiliary steering system |
| CN102530056B (en) * | 2010-12-31 | 2013-11-27 | 财团法人车辆研究测试中心 | Self-adjusting method for electric auxiliary steering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20140813 |
|
| EXPY | Termination of patent right or utility model |