CN103192877B - The speed of a motor vehicle converting system of battery-driven car EPS - Google Patents
The speed of a motor vehicle converting system of battery-driven car EPS Download PDFInfo
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- CN103192877B CN103192877B CN201310094923.3A CN201310094923A CN103192877B CN 103192877 B CN103192877 B CN 103192877B CN 201310094923 A CN201310094923 A CN 201310094923A CN 103192877 B CN103192877 B CN 103192877B
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Abstract
The present invention proposes a kind of speed of a motor vehicle converting system of battery-driven car EPS, belong to electric automobiles.This device comprises engine rotational speed signal circuit for generating, wheel speed sensors, vehicle speed signal circuit for generating, engine rotational speed signal driving circuit and vehicle speed signal driving circuit, wherein this engine rotational speed signal circuit for generating is when receiving " START " gear signal that this steering lock provides, and the engine rotational speed signal of simulation is sent to engine rotational speed signal driving circuit; The wheel speed signal that this vehicle speed signal circuit for generating provides according to this wheel speed sensors, obtains vehicle speed signal and this vehicle speed signal is sent to vehicle speed signal driving circuit; Engine rotational speed signal, vehicle speed signal are converted to impulse form and send to EPS by this engine rotational speed signal circuit, vehicle speed signal driving circuit respectively.Signal acquisition behavior of the present invention is more simple, and need not transform EPS, reduce improvement cost, and commonality is stronger.
Description
Technical field
The present invention relates to a kind of battery-driven car EPS, particularly relate to a kind of speed of a motor vehicle converting system of battery-driven car EPS.
Background technology
On orthodox car, speed of a motor vehicle induction type EPS (ElectricPowerSteering, electric power steering) the normally necessary vehicle speed signal of work and engine rotational speed signal is provided by engine electric spray controller ECU.But eliminate ECU in battery-driven car development process, Signal transmissions interrupts, and causes EPS cannot receive vehicle speed signal and engine rotational speed signal, causes EPS cisco unity malfunction.
In the process of battery-driven car exploitation, normally design for change is carried out to EPS itself, increase CAN transceiver, receive the vehicle speed signal that HCU is sent by CAN network.Such as, be 201110164173.3 in the patent No., name is called in the patent of " a kind of EPS power steering method and system being applicable to pure electric automobile ", as shown in Figure 1, the entire car controller of battery-driven car reads motor speed and obtains speed of a motor vehicle CAN signal according to the ratio relation of this motor speed and the speed of a motor vehicle, speed of a motor vehicle CAN signal is converted to speed of a motor vehicle analog signal required for EPS power steering controller and simulation of engine signal by signal conversion module, speed of a motor vehicle analog signal and simulation of engine signal is received by EPS, control EPS steering assist motor works, thus power steering is provided.
Although this patent can the engine rotational speed signal that sends of complete alternative ECU and speed signal, ensure the transmission of vehicle speed signal and engine rotational speed signal, EPS is normally worked, but entire car controller reads motor speed and obtains speed of a motor vehicle CAN signal according to the ratio relation of this motor speed and the speed of a motor vehicle, and by signal conversion module, speed of a motor vehicle CAN signal is converted to speed of a motor vehicle analog signal and simulation of engine signal, this signal acquisition behavior more complicated, and the speed of a motor vehicle analog signal after converting and simulation of engine signal can not the EPS of Direct driver orthodox car, need to carry out redesign exploitation to the EPS of orthodox car, EPS can not realize common.
Summary of the invention
The present invention is intended to solve the technical matters existed in prior art, especially innovatively proposes a kind of speed of a motor vehicle converting system of battery-driven car EPS, and the mode obtaining engine rotational speed signal and vehicle speed signal is simpler.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of speed of a motor vehicle converting system of battery-driven car EPS, it is characterized in that: comprise engine rotational speed signal circuit for generating, wheel speed sensors and vehicle speed signal circuit for generating, wherein the mouth of the steering lock of battery-driven car connects the input end of this engine rotational speed signal circuit for generating, the engine rotational speed signal of simulation, when receiving " START " gear signal that this steering lock provides, is sent to this battery-driven car EPS by this engine rotational speed signal circuit for generating;
The mouth of described wheel speed sensors connects the input end of this vehicle speed signal circuit for generating, the wheel speed signal that this vehicle speed signal circuit for generating provides according to this wheel speed sensors, obtains vehicle speed signal and this vehicle speed signal is sent to this battery-driven car EPS.Compared to traditional battery-driven car EPS, the present invention obtains vehicle speed signal not by CAN communication mode, but wheel speed sensors is adopted in speed of a motor vehicle acquisition process, vehicle speed signal is obtained according to the wheel speed signal that wheel speed sensors provides, and direct modeling in engine rotational speed signal acquisition process, therefore signal acquisition behavior of the present invention is simpler.
Described vehicle speed signal circuit for generating is made up of filtering and amplifying circuit, shaping circuit and speed of a motor vehicle computing circuit, the mouth of wherein said wheel speed sensors connects the input end of this filtering and amplifying circuit, the mouth of this filtering and amplifying circuit connects the input end of this shaping circuit, and the mouth of this shaping circuit connects the input end of this vehicle speed signal circuit for generating; Described filtering and amplifying circuit is used for carrying out amplification filtering process to the wheel speed signal that this wheel speed sensors provides; Described shaping circuit is used for carrying out Shape correction to the wheel speed signal after amplification filtering process; Described speed of a motor vehicle computing circuit is used for the proportionate relationship according to wheel speed signal/vehicle speed signal=9.637, obtains vehicle speed signal and this vehicle speed signal is sent to this battery-driven car EPS.The present invention, in vehicle speed signal acquisition process, first carries out amplification filtering process to the wheel speed signal that wheel speed sensors provides, then carries out Shape correction, thus improves the accuracy rate of vehicle speed signal acquisition.
The speed of a motor vehicle converting system of this battery-driven car EPS also comprises engine rotational speed signal driving circuit and vehicle speed signal driving circuit, the mouth of wherein said engine speed circuit for generating connects the input end of this engine rotational speed signal driving circuit, and this engine rotational speed signal driving circuit is used for converting the engine rotational speed signal of this simulation to engine speed impulse singla and sending to this battery-driven car EPS;
The mouth of described vehicle speed signal circuit for generating connects the input end of this vehicle speed signal driving circuit, and this vehicle speed signal driving circuit is used for converting this vehicle speed signal to vehicle speed pulse and sending to this battery-driven car EPS.
The present invention adopts engine rotational speed signal driving circuit and vehicle speed signal driving circuit, engine rotational speed signal and vehicle speed signal being converted to respectively can the impulse singla of Direct driver battery-driven car EPS, traditional EPS need not be transformed, reduce improvement cost, and commonality is stronger.
The pulse width of the engine rotational speed signal of described simulation is 2.48ms, and frequency is 22Hz, and engine speed is 900-1000r/min.
Described wheel speed sensors is the wheel speed sensors in orthodox car ABS system, and pure electric vehicle only need change wire harness, need not increase other parts, reduces signal acquisition cost.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, compared to traditional battery-driven car EPS, the present invention obtains vehicle speed signal not by CAN communication mode, but wheel speed sensors is adopted in speed of a motor vehicle acquisition process, vehicle speed signal is obtained according to the wheel speed signal that wheel speed sensors provides, and direct modeling in engine rotational speed signal acquisition process, therefore signal acquisition behavior of the present invention is simpler;
2, the present invention is in vehicle speed signal acquisition process, first carries out amplification filtering process to wheel speed signal, then carries out Shape correction, thus improves the accuracy rate of vehicle speed signal acquisition;
3, the present invention adopts engine rotational speed signal driving circuit and vehicle speed signal driving circuit, engine rotational speed signal and vehicle speed signal being converted to respectively can the impulse singla of Direct driver battery-driven car EPS, traditional EPS need not be transformed, reduce improvement cost, and commonality is stronger;
4, wheel speed sensors selects the wheel speed sensors in orthodox car ABS system, only need change wire harness, need not increase other parts, reduce signal acquisition cost.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the pull up circuit schematic diagram of traditional battery-driven car EPS steering boost system;
Fig. 2 is the pull up circuit schematic diagram of the speed of a motor vehicle converting system of battery-driven car EPS in the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, unless otherwise specified and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figure 2, the speed of a motor vehicle converting system of this battery-driven car EPS comprises engine rotational speed signal circuit for generating, vehicle speed signal circuit for generating, engine rotational speed signal driving circuit and vehicle speed signal driving circuit, the wherein input end of the mouth connecting engine tach signal circuit for generating of steering lock, and the input end of the mouth connecting engine tach signal driving circuit of this engine rotational speed signal, the mouth of this engine rotational speed signal driving circuit connects battery-driven car EPS.
This engine rotational speed signal circuit for generating is when receiving " START " gear signal that this steering lock provides, the engine rotational speed signal of simulation is sent to this engine rotational speed signal driving circuit, this engine rotational speed signal driving circuit converts the engine rotational speed signal of this simulation to engine speed impulse singla and sends to this battery-driven car EPS.
This vehicle speed signal circuit for generating comprises filtering and amplifying circuit, shaping circuit and vehicle speed signal computing circuit, the mouth of wheel speed sensors connects the input end of filtering and amplifying circuit, the mouth of this filtering and amplifying circuit connects the input end of shaping circuit, the mouth of this shaping circuit connects the input end of vehicle speed signal computing circuit, the mouth of this vehicle speed signal computing circuit connects the input end of this vehicle speed signal driving circuit, and the mouth of this vehicle speed signal driving circuit connects this battery-driven car EPS.
This filtering and amplifying circuit carries out amplification filtering process to the wheel speed signal that this wheel speed sensors provides; This shaping circuit carries out Shape correction to the wheel speed signal after amplification filtering process; This speed of a motor vehicle computing circuit is according to the proportionate relationship of wheel speed signal/vehicle speed signal=9.637, obtain vehicle speed signal and this vehicle speed signal is sent to this vehicle speed signal driving circuit, this vehicle speed signal is converted to vehicle speed pulse and sends to battery-driven car EPS by this vehicle speed signal driving circuit.
Compared to traditional battery-driven car EPS, the present invention obtains vehicle speed signal not by CAN communication mode, but wheel speed sensors is adopted in speed of a motor vehicle acquisition process, vehicle speed signal is obtained according to the wheel speed signal that wheel speed sensors provides, and direct modeling in engine rotational speed signal acquisition process, therefore signal acquisition behavior of the present invention is simpler.In addition, the present invention adopts engine rotational speed signal driving circuit and vehicle speed signal driving circuit, engine rotational speed signal and vehicle speed signal being converted to respectively can the impulse singla of Direct driver battery-driven car EPS, traditional EPS need not be transformed, reduce improvement cost, and commonality is stronger.
In addition, in the present invention, wheel speed sensors selects the wheel speed sensors in orthodox car ABS system, only need change wire harness, need not increase other parts, reduce signal acquisition cost.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (4)
1. the speed of a motor vehicle converting system of a battery-driven car EPS, it is characterized in that: comprise engine rotational speed signal circuit for generating, wheel speed sensors and vehicle speed signal circuit for generating, wherein the mouth of the steering lock of battery-driven car connects the input end of this engine rotational speed signal circuit for generating, the engine rotational speed signal of simulation, when receiving " START " gear signal that this steering lock provides, is sent to this battery-driven car EPS by this engine rotational speed signal circuit for generating;
The mouth of described wheel speed sensors connects the input end of this vehicle speed signal circuit for generating, the wheel speed signal that this vehicle speed signal circuit for generating provides according to this wheel speed sensors, obtains vehicle speed signal and this vehicle speed signal is sent to this battery-driven car EPS;
Described vehicle speed signal circuit for generating is made up of filtering and amplifying circuit, shaping circuit and speed of a motor vehicle computing circuit, the mouth of wherein said wheel speed sensors connects the input end of this filtering and amplifying circuit, the mouth of this filtering and amplifying circuit connects the input end of this shaping circuit, and the mouth of this shaping circuit connects the input end of this vehicle speed signal circuit for generating;
Described filtering and amplifying circuit is used for carrying out amplification filtering process to the wheel speed signal that this wheel speed sensors provides;
Described shaping circuit is used for carrying out Shape correction to the wheel speed signal after amplification filtering process;
Described speed of a motor vehicle computing circuit is used for the proportionate relationship according to wheel speed signal/vehicle speed signal=9.637, obtains vehicle speed signal and this vehicle speed signal is sent to this battery-driven car EPS.
2. the speed of a motor vehicle converting system of battery-driven car EPS according to claim 1, it is characterized in that: also comprise engine rotational speed signal driving circuit and vehicle speed signal driving circuit, the mouth of wherein said engine speed circuit for generating connects the input end of this engine rotational speed signal driving circuit, and this engine rotational speed signal driving circuit is used for converting the engine rotational speed signal of this simulation to engine speed impulse singla and sending to this battery-driven car EPS;
The mouth of described vehicle speed signal circuit for generating connects the input end of this vehicle speed signal driving circuit, and this vehicle speed signal driving circuit is used for converting this vehicle speed signal to vehicle speed pulse and sending to this battery-driven car EPS.
3. the speed of a motor vehicle converting system of battery-driven car EPS according to claim 1, is characterized in that: the pulse width of the engine rotational speed signal of described simulation is 2.48ms, and frequency is 22Hz, and engine speed is 900-1000r/min.
4. the speed of a motor vehicle converting system of battery-driven car EPS according to claim 1, is characterized in that: described wheel speed sensors is the wheel speed sensors in orthodox car ABS system.
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| CN201310094923.3A CN103192877B (en) | 2013-03-22 | 2013-03-22 | The speed of a motor vehicle converting system of battery-driven car EPS |
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| CN201310094923.3A CN103192877B (en) | 2013-03-22 | 2013-03-22 | The speed of a motor vehicle converting system of battery-driven car EPS |
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| CN103192877A CN103192877A (en) | 2013-07-10 |
| CN103192877B true CN103192877B (en) | 2016-03-23 |
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| CN105946966A (en) * | 2016-05-26 | 2016-09-21 | 奇瑞汽车股份有限公司 | Vehicle EPS (Electric Power Steering System) |
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| CN101542297A (en) * | 2007-01-18 | 2009-09-23 | 威伯科有限公司 | Method and device for determining the speed of a vehicle |
| CN102229347A (en) * | 2011-04-27 | 2011-11-02 | 纽贝耳汽车(杭州)有限公司 | Electric power-assisted steering system of electric vehicle and power-assisted steering method thereof |
| CN102295023A (en) * | 2011-06-18 | 2011-12-28 | 重庆长安汽车股份有限公司 | EPS (Electric Power Storage) power-assisted steering method and system suitable for pure electric vehicle automobile |
| CN203211378U (en) * | 2013-03-22 | 2013-09-25 | 重庆长安铃木汽车有限公司 | Speed conversion device of electric vehicle EPS (Electric Power Storage) system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE112011103254B4 (en) * | 2010-09-28 | 2018-06-14 | Suzuki Motor Corporation | Steering device for a motor vehicle |
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| CN101542297A (en) * | 2007-01-18 | 2009-09-23 | 威伯科有限公司 | Method and device for determining the speed of a vehicle |
| CN101051004A (en) * | 2007-05-24 | 2007-10-10 | 清华大学 | Detecting method for full wheel driven electric driving vehicle movement parameter |
| CN201058621Y (en) * | 2007-06-01 | 2008-05-14 | 天津亿普斯电子科技有限公司 | Electric power-assisted steering electronic controller |
| CN102229347A (en) * | 2011-04-27 | 2011-11-02 | 纽贝耳汽车(杭州)有限公司 | Electric power-assisted steering system of electric vehicle and power-assisted steering method thereof |
| CN102295023A (en) * | 2011-06-18 | 2011-12-28 | 重庆长安汽车股份有限公司 | EPS (Electric Power Storage) power-assisted steering method and system suitable for pure electric vehicle automobile |
| CN203211378U (en) * | 2013-03-22 | 2013-09-25 | 重庆长安铃木汽车有限公司 | Speed conversion device of electric vehicle EPS (Electric Power Storage) system |
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Address after: 401321 Chongqing city Banan District Yudong Town Co-patentee after: Beidou Xingtong (Chongqing) Automotive Electronics Co., Ltd. Patentee after: Chongqing Chang'an Suzuki Automobile Co., Ltd. Address before: 401321 Chongqing city Banan District Yudong Town Co-patentee before: Chongqing Shenyu Beidou Automobile Electronic Co., Ltd. Patentee before: Chongqing Chang'an Suzuki Automobile Co., Ltd. |
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Address after: 401320 Yudong street, Banan District, Chongqing Patentee after: Chongqing lingyao Automobile Co.,Ltd. Patentee after: Beidou Xingtong (Chongqing) Automotive Electronics Co., Ltd Address before: 401321 Yudong Town, Banan District, Chongqing Patentee before: CHONGQING CHANG'AN SUZUKI AUTOMOBILE Co.,Ltd. Patentee before: Beidou Xingtong (Chongqing) Automotive Electronics Co., Ltd |