CN107662640A - Electro-Hydraulic Power Steering System - Google Patents
Electro-Hydraulic Power Steering System Download PDFInfo
- Publication number
- CN107662640A CN107662640A CN201710761742.XA CN201710761742A CN107662640A CN 107662640 A CN107662640 A CN 107662640A CN 201710761742 A CN201710761742 A CN 201710761742A CN 107662640 A CN107662640 A CN 107662640A
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- China
- Prior art keywords
- control
- output end
- input
- speed
- control system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
- B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
- B62D6/001—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits the torque NOT being among the input parameters
Abstract
The invention discloses Electro-Hydraulic Power Steering System, including control system, steering mechanism and oil storage tank, control system includes induction part and central control system, wherein, induction part is located in the power part of transfer, to receive the movable information of transfer and be converted into electric signal, the input of central control system is connected to the output end of induction part, to receive the different electrical signals of induction part input, steering mechanism is connected with oil storage tank by oil pipe, the output end of central control system is connected to the control signal of steering mechanism, turned with the voltage signal control steering mechanism for exporting different；Using the technical program, the speed of fuel consumption is effectively reduced, according to different road conditions and travel speed, the speed and angle that regulation turns in real time are easy to use, bring the comfortable steering response of driver, improve driving safety performance.
Description
Technical field
The invention belongs to fluid-link steering field, it is more particularly related to Electro-Hydraulic Power Steering System.
Background technology
With expanding economy, living standard is constantly lifted, and automobile is competing in order to increase market as popular consumer goods
Power is striven, consumer is then more energy-saving and environmental protection and safety for the demand of automobile, as hydraulic power-assist steering system is in various cars
Extensive use in, most consumer more focus on safety in utilization and the energy-saving and emission-reduction of hydraulic power-assist steering system, because
This, prior art still needs further lifting to meet more consumer groups, moreover, for the development of electric automobile,
Matched hydraulic power-assist steering system should also grow with each passing hour.
The content of the invention
The technical problems to be solved by the invention are to provide the Electro-Hydraulic Power Steering System of Portable energy-saving.
To achieve these goals, the technical scheme taken of the present invention is：Electro-Hydraulic Power Steering System, including control
System, steering mechanism and oil storage tank, the control system include induction part and central control system, wherein, induction part is located at steering dress
In the power part put, to receive the movable information of transfer and be converted into electric signal, the input of central control system is connected to
The output end of induction part, to receive the different electrical signals of induction part input, steering mechanism is connected with oil storage tank by oil pipe, middle control
The output end of system is connected to the control signal of steering mechanism, is turned with the voltage signal control steering mechanism for exporting different.
Electro-Hydraulic Power Steering System disclosed by the invention, the steering mechanism include motor, hydraulic pump, power cylinder and
Switching valve, the input of motor are connected to the output end of the central control system, and the output end of motor is connected to hydraulic pump, hydraulic pump
Pressure oil input oil storage tank is connected to by oil pipe, the output end of hydraulic pump is connected with switching valve by oil pipe, hydraulic pump
With flow control valve and excess-flow valve are provided with switching valve connected pipes, wherein, the input of excess-flow valve passes through pipeline
It is connected with the in-line of switching valve, the output end of excess-flow valve is connected with oil storage tank by pipeline, flow control valve both ends
The inflow pipeline and flowline of switching valve are connected to by pipeline, switching valve is connected with power cylinder by pipeline.
Electro-Hydraulic Power Steering System disclosed by the invention, the induction part include angular-rate sensor and revolution speed sensing
Device, angular-rate sensor are located at steering wheel shaft surface, to receive angular speed caused by recent movement and be converted into electric signal,
Speed probe is located at the surface of axletree, to receive the speed of vehicle wheel rotation and be converted into electric signal, wherein, angular-rate sensor
The input of central control system is all connected to the output end of speed probe.
Electro-Hydraulic Power Steering System disclosed by the invention, the central control system include signal processing module, control mould
Block and drive module, wherein, signal processing module includes signal receiving module and A/D modular converters, signal processing module it is defeated
Entering end and be connected to the induction part, the output end of signal processing module is connected to control module to input different data signals,
The output end of control module is connected to drive module, to export different voltage signal control drive module regulation and control motor speeds.
The control method of Electro-Hydraulic Power Steering System disclosed by the invention, comprises the following steps：
1) feedback signal that control module exports according to the angular-rate sensor and vehicle speed sensor detected, calculate and turn
Angle and rotating speed required for angle；
2) control module sends control instruction to drive module, motor is produced corresponding rotating speed, and then exports corresponding
Flow and pressure oil；
3) power of pressure oil acquisition motor output enters hydraulic pump, and pressure oil enters flow control valve by hydraulic pump again
And excess-flow valve, to carry out the input flow rate control to pressure oil, most suitable pressure oil mass is most exported at last and pours into steering
Valve.
The control method of Electro-Hydraulic Power Steering System disclosed by the invention, the control module are real in steering procedure
When gather dynamic valve in steering pump actual speed, for the feedback regulation in closed-loop control.
Using the technical program, using modular system controlled motor rotating speed, coordinate flow control valve and excess-flow valve
Control pressure oil output, the speed of fuel consumption is effectively reduced, pumping system, high speed time are driven relative to conventional engines
Energy ratio highest can reach 85%, therefore be especially suitable for the vehicle or new-energy automobile of energy-conservation；Simultaneously as between part
Mechanism is compact, and motor, oil pump and central control system can be combined, and has good modularized design, saves automobile
Forward engine room arrangement space, meet the lightweight principle of current automobile industry main flow, and in steering procedure, according to different roads
Condition and travel speed, the speed and angle that regulation turns in real time, easy to use, intellectualized operation, bring driver and comfortably turn
To road feel, driving safety performance is improved.
Below with reference to drawings and examples, the present invention is described in detail.
Brief description of the drawings
The content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described below：
Fig. 1 is the schematic diagram of the steering mechanism of Electro-Hydraulic Power Steering System of the present invention；
Fig. 2 is the FB(flow block) of the central control system of Electro-Hydraulic Power Steering System of the present invention.
In figure mark for：1st, power cylinder；2nd, switching valve；3rd, central control system；4th, motor；5th, hydraulic pump；6th, flow control valve；
7th, excess-flow valve.
Embodiment
Below against accompanying drawing, by the description to embodiment, each structure for example involved to the embodiment of the present invention
Mutual alignment and annexation, the effect of each several part and operation principle, manufacturing process between the shape of part, construction, each several part
And operate with method etc., be described in further detail, with help those skilled in the art to the present invention inventive concept,
Technical scheme has more complete, accurate and deep understanding.
Fig. 1 be Electro-Hydraulic Power Steering System of the present invention steering mechanism schematic diagram, electric-controlled hydraulic as depicted
Servo steering system, including control system, steering mechanism and oil storage tank, control system include induction part and central control system, wherein,
Induction part is located in the power part of transfer, to receive the movable information of transfer and be converted into electric signal, middle control system
The input of system is connected to the output end of induction part, to receive the different electrical signals of induction part input, steering mechanism and oil storage tank
It is connected by oil pipe, the output end of central control system is connected to the control signal of steering mechanism, to export different voltage signals
Steering mechanism is controlled to turn, steering mechanism includes motor 4, hydraulic pump 5, power cylinder 1 and switching valve 2, the input connection of motor 4
In the output end of the central control system, the output end of motor 4 is connected to hydraulic pump 5, and the pressure oil input of hydraulic pump 5 passes through oil
Pipe is connected to oil storage tank, and the output end of hydraulic pump 5 is connected with switching valve 2 by oil pipe, hydraulic pump 5 and the connected pipes of switching valve 2
In be provided with flow control valve 6 and excess-flow valve 7, wherein, the input of excess-flow valve 7 is entered by pipeline and switching valve 2
Oil pipe line is connected, and the output end of excess-flow valve 7 is connected with oil storage tank by pipeline, and the both ends of flow control valve 6 pass through pipeline point
The inflow pipeline and flowline of switching valve 2 are not connected to, and switching valve 2 is connected with power cylinder 1 by pipeline, and induction part includes angle
Velocity sensor and speed probe, angular-rate sensor are located at steering wheel shaft surface, to receive caused by recent movement
Angular speed is simultaneously converted into electric signal, and speed probe is located at the surface of axletree, to receive the speed of vehicle wheel rotation and be converted into electricity
Signal, wherein, the output end of angular-rate sensor and speed probe is all connected to the input of central control system；When automobile straight line
Traveling, when steering wheel is in relative static conditions, hydraulic pump is operated with very low speed, and most pressure oil passes through switching valve
2 flow back to oil pipe, and small part pressure oil directly flows back to oil pipe (not entering in switching valve) by flow control valve；When steering wheel rotates
When, sensor measures corner, tach signal and is transmitted to central control system, and central control system judges motoring condition, to driving mould
Block sends control instruction, motor 4 is produced corresponding rotating speed to drive hydraulic pump 5, and then exports corresponding flow, pressure oil warp
Cross switching valve 2 and enter power cylinder 1, so as to promote piston to produce the power-assisted of motor turning.
Fig. 2 is the FB(flow block) of the central control system of Electro-Hydraulic Power Steering System of the present invention, and system is controlled in as depicted
System includes signal processing module, control module and drive module, wherein, signal processing module includes signal receiving module and A/D
Modular converter, the input of signal processing module are connected to the induction part, and the output end of signal processing module is connected to control
For module to input different data signals, the output end of control module is connected to drive module, to export different voltage signals
Control drive module regulation and control motor speed；Middle control module can be located in ECU, can also add safety precautions and failure is examined
Disconnected function, when current of electric is excessive or temperature is too high, system will limit or cut off the electric current of motor, avoid failure；
If system jam, steering mechanism still can be utilized, maintains to rotate and store failure code for physically.
The control method of Electro-Hydraulic Power Steering System：Comprise the following steps：
1) feedback signal that control module exports according to the angular-rate sensor and vehicle speed sensor detected, calculate and turn
Angle and rotating speed required for angle；
2) control module sends control instruction to drive module, motor is produced corresponding rotating speed, and then exports corresponding
Flow and pressure oil；
3) power of pressure oil acquisition motor output enters hydraulic pump, and pressure oil enters flow control valve by hydraulic pump again
And excess-flow valve, to carry out the input flow rate control to pressure oil, most suitable pressure oil mass is most exported at last and pours into steering
Valve.
Control module gathers the actual speed of steering pump in dynamic valve in real time in steering procedure, in closed-loop control
Feedback regulation.
Using the technical program, using modular system controlled motor rotating speed, coordinate flow control valve and excess-flow valve
Control pressure oil output, the speed of fuel consumption is effectively reduced, pumping system, high speed time are driven relative to conventional engines
Energy ratio highest can reach 85%, therefore be especially suitable for the vehicle or new-energy automobile of energy-conservation；Simultaneously as between part
Mechanism is compact, and motor, oil pump and central control system can be combined, and has good modularized design, saves automobile
Forward engine room arrangement space, meet the lightweight principle of current automobile industry main flow, and in steering procedure, according to different roads
Condition and travel speed, the speed and angle that regulation turns in real time, easy to use, intellectualized operation, bring driver and comfortably turn
To road feel, driving safety performance is improved.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing
Enter and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.
Claims (6)
1. Electro-Hydraulic Power Steering System, including control system, steering mechanism and oil storage tank, it is characterised in that：The control
System includes induction part and central control system, wherein, induction part is located in the power part of transfer, to receive transfer
Movable information is simultaneously converted into electric signal, and the input of central control system is connected to the output end of induction part, to receive induction part input
Different electrical signals, steering mechanism is connected with oil storage tank by oil pipe, and the output end of central control system is connected to the control of steering mechanism
Input processed, turned with the voltage signal control steering mechanism for exporting different.
2. according to the Electro-Hydraulic Power Steering System described in claim 1, it is characterised in that：The steering mechanism includes electricity
Machine, hydraulic pump, power cylinder and switching valve, the input of motor are connected to the output end of the central control system, the output end of motor
Hydraulic pump is connected to, the pressure oil input of hydraulic pump is connected to oil storage tank, the output end and switching valve of hydraulic pump by oil pipe
It is connected by oil pipe, flow control valve and excess-flow valve is provided with hydraulic pump and switching valve connected pipes, wherein, flow restriction
The input of valve is connected by pipeline with the in-line of switching valve, and output end and the oil storage tank of excess-flow valve pass through pipeline phase
Even, flow control valve both ends are connected to the inflow pipeline and flowline of switching valve, switching valve and power cylinder by pipeline
It is connected by pipeline.
3. according to the Electro-Hydraulic Power Steering System described in claim 1, it is characterised in that：The induction part includes angular speed
Sensor and speed probe, angular-rate sensor are located at steering wheel shaft surface, to receive angle speed caused by recent movement
To spend and be converted into electric signal, speed probe is located at the surface of axletree, to receive the speed of vehicle wheel rotation and be converted into electric signal,
Wherein, the output end of angular-rate sensor and speed probe is all connected to the input of central control system.
4. according to the Electro-Hydraulic Power Steering System described in claim 1, it is characterised in that：The central control system includes signal
Processing module, control module and drive module, wherein, signal processing module includes signal receiving module and A/D modular converters, letter
The input of number processing module is connected to the induction part, and the output end of signal processing module is connected to control module to input not
Same data signal, the output end of control module are connected to drive module, and drive module is controlled to export different voltage signals
Regulate and control motor speed.
5. according to the control method of the Electro-Hydraulic Power Steering System described in Claims 1 to 4, it is characterised in that：Including with
Lower step：
1) feedback signal that control module exports according to the angular-rate sensor and vehicle speed sensor detected, calculates corner institute
The angle and rotating speed needed；
2) control module sends control instruction to drive module, motor is produced corresponding rotating speed, and then export corresponding flow
And pressure oil；
3) power of pressure oil acquisition motor output enters hydraulic pump, and pressure oil enters flow control valve and stream by hydraulic pump again
Amount limitation valve, to carry out the input flow rate control to pressure oil, most suitable pressure oil mass is most exported at last and pours into switching valve.
6. according to the control method of the Electro-Hydraulic Power Steering System described in claim 5, it is characterised in that：The control mould
Block gathers the actual speed of steering pump in dynamic valve in real time in steering procedure, for the feedback regulation in closed-loop control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761742.XA CN107662640A (en) | 2017-08-30 | 2017-08-30 | Electro-Hydraulic Power Steering System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761742.XA CN107662640A (en) | 2017-08-30 | 2017-08-30 | Electro-Hydraulic Power Steering System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107662640A true CN107662640A (en) | 2018-02-06 |
Family
ID=61097384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710761742.XA Pending CN107662640A (en) | 2017-08-30 | 2017-08-30 | Electro-Hydraulic Power Steering System |
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| CN (1) | CN107662640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539796A (en) * | 2019-09-12 | 2019-12-06 | 中联重机股份有限公司 | vehicle steering control method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203094173U (en) * | 2013-03-08 | 2013-07-31 | 盐城市步高汽配制造有限公司 | Electric hydraulic power steering system for fully electric bus |
| CN104742962A (en) * | 2015-03-30 | 2015-07-01 | 芜湖德孚转向系统有限公司 | Electric hydraulic power steering control method |
| CN105752152A (en) * | 2016-05-17 | 2016-07-13 | 山东汇川汽车部件有限公司 | Electric hydraulic power steering system for automobile |
-
2017
- 2017-08-30 CN CN201710761742.XA patent/CN107662640A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203094173U (en) * | 2013-03-08 | 2013-07-31 | 盐城市步高汽配制造有限公司 | Electric hydraulic power steering system for fully electric bus |
| CN104742962A (en) * | 2015-03-30 | 2015-07-01 | 芜湖德孚转向系统有限公司 | Electric hydraulic power steering control method |
| CN105752152A (en) * | 2016-05-17 | 2016-07-13 | 山东汇川汽车部件有限公司 | Electric hydraulic power steering system for automobile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539796A (en) * | 2019-09-12 | 2019-12-06 | 中联重机股份有限公司 | vehicle steering control method and system |
| CN110539796B (en) * | 2019-09-12 | 2021-06-08 | 中联农业机械股份有限公司 | Vehicle steering control method and system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180206 |
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| RJ01 | Rejection of invention patent application after publication |