CN103879444A - Vehicle power-assisted steering system and control method thereof - Google Patents
Vehicle power-assisted steering system and control method thereof Download PDFInfo
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- CN103879444A CN103879444A CN201410119467.8A CN201410119467A CN103879444A CN 103879444 A CN103879444 A CN 103879444A CN 201410119467 A CN201410119467 A CN 201410119467A CN 103879444 A CN103879444 A CN 103879444A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims description 34
- 239000002828 fuel tank Substances 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
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Abstract
The invention relates to a vehicle power-assisted steering system and a control method of the vehicle power-assisted steering system. The vehicle power-assisted steering system comprises a steering wheel, a steering device, an oil tank, a hydraulic pump, a motor, a pressure detecting device and an electric control unit. The steering device is connected with the steering wheel. The hydraulic pump is connected between the oil tank and the steering device so as to pump hydraulic oil from the oil tank to the steering device. The motor and the hydraulic pump are connected to drive the hydraulic pump to work and the pressure detecting device is used for detecting the pressure of the hydraulic oil of the steering device and transmits a pressure signal to the electric control unit. The electric control unit is used for obtaining a speed signal of an automobile and controlling the rotation speed of the motor according to the pressure signal and the speed signal. According to the vehicle power-assisted steering system and the control method of the vehicle power-assisted steering system, the hydraulic pump can control the flow according to the requirements of the system, energy is saved, different power-assisting hand feelings are provided for different speeds and the steering effects of being handy at a low speed and stable at a high speed are achieved.
Description
Technical field
The present invention relates to vehicular field, be specifically related to a kind of vehicle booster steering swivel system and control method thereof.
Background technology
Along with the fast development of China's economic construction and improving constantly of living standards of the people, the automobile pollution of China is also in continuous increase.In order to reduce the difficulty of Vehicular turn, hydraulic power-assist steering system (HPS) is generally installed on vehicle.But traditional hydraulic power-assist steering system relies on driven by engine steering pump that energy is provided, for power steering.As long as engine running, system is just at consumed energy, and do not depend on whether there is handling maneuver.When vehicle is in the time running at high speed, engine speed is higher, and the rotating speed of the steering pump being moved by engine direct tape splicing is also high, and the pressure of the hydraulic oil of now steering pump output is larger, causes bearing circle to be beaten and wafts, and is difficult to manipulation.And in the time of engine idle or vehicle low speed, the rotating speed of steering pump is very low, cause turning to difficulty, make chaufeur easily tired.
Summary of the invention
In view of this, the present invention aims to provide a kind of maneuverable vehicle booster steering swivel system and control method thereof.
In order to realize object of the present invention, one aspect of the present invention provides a kind of vehicle booster steering swivel system, it comprises bearing circle, deflector, fuel tank, Hydraulic Pump, motor, pressure-detecting device and ECU (Electrical Control Unit), described deflector is connected with described bearing circle, described Hydraulic Pump is connected between described fuel tank and deflector, with by hydraulic oil from described fuel tank pump to described deflector, described motor is connected to drive described hydraulic pump works with described Hydraulic Pump, described pressure-detecting device is for detection of the hydraulic fluid pressure of described deflector, and pressure signal is transferred to described ECU (Electrical Control Unit), described ECU (Electrical Control Unit) is for obtaining the vehicle speed signal of vehicle, and according to the rotating speed of motor described in described pressure signal and vehicle speed signal control.
Preferably, described vehicle booster steering swivel system also comprises device for detecting motor rotary speed, and described device for detecting motor rotary speed is for detection of the rotating speed of described motor, and tach signal is transferred to described ECU (Electrical Control Unit).
Preferably, the oil outlet of described deflector is connected with described fuel tank.
Preferably, described ECU (Electrical Control Unit) is connected to obtain described vehicle speed signal with CAN communication unit.
Preferably, described pressure-detecting device detects the hydraulic fluid pressure of described deflector entrance.
Preferably, in described ECU (Electrical Control Unit), prestore the corresponding relation of the rotating speed of the speed of a motor vehicle, hydraulic fluid pressure and described motor, and determine the rotating speed of target of described motor according to described vehicle speed signal and pressure signal and described corresponding relation.
The present invention provides a kind of control method of vehicle booster steering swivel system on the other hand.Described vehicle booster steering swivel system comprises bearing circle, deflector, fuel tank, Hydraulic Pump and motor, described deflector is connected with described bearing circle, described Hydraulic Pump is connected between described fuel tank and deflector, with by hydraulic oil from described fuel tank pump to described deflector, described motor is connected to drive described hydraulic pump works with described Hydraulic Pump.The control method of described vehicle booster steering swivel system comprises the steps:
Detect the speed of a motor vehicle of described vehicle;
Detect the hydraulic fluid pressure of described deflector;
According to the rotating speed of motor described in the described speed of a motor vehicle and hydraulic fluid pressure control.
Preferably, the control method of described vehicle booster steering swivel system also comprises the steps:
Detect the rotating speed of described motor, to judge that whether described motor is according to the described speed of a motor vehicle and the determined rotational speed of hydraulic fluid pressure, if not, adjust the rotating speed of described motor so that it is by the speed of a motor vehicle and the determined rotational speed of hydraulic fluid pressure.
Preferably, described hydraulic fluid pressure is the hydraulic fluid pressure of described deflector entrance.
Vehicle booster steering swivel system and control method thereof that the embodiment of the present invention provides, by according to the rotating speed of the hydraulic fluid pressure control motor of the speed of a motor vehicle of vehicle and deflector, can allow the size that need to control flow of Hydraulic Pump along with system, both conserve energy, simultaneously again for the different speed of a motor vehicle provides different power-assisted feels, play the turning efficiency of " low speed is light, stable at a high speed ".
Accompanying drawing explanation
Fig. 1 is the structural representation of the vehicle booster steering swivel system that provides of the embodiment of the present invention.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Please refer to Fig. 1, the embodiment of the present invention provides a kind of vehicle booster steering swivel system, and it comprises bearing circle 1, deflector 2, fuel tank 4, Hydraulic Pump 6, motor 5, pressure-detecting device 7 and ECU (Electrical Control Unit) 3.
Pressure-detecting device 7 is connected with deflector 2 and ECU (Electrical Control Unit) 3, for detection of the hydraulic fluid pressure of deflector 2, and pressure signal is transferred to ECU (Electrical Control Unit) 2.Pressure-detecting device 7 is specifically as follows pressure sensor.ECU (Electrical Control Unit) 3 is for obtaining the vehicle speed signal of vehicle, and according to the rotating speed of pressure signal and vehicle speed signal control motor 5, thereby controls the size of power steering.This ECU (Electrical Control Unit) 3 can be the electronic control unit (ECU) of vehicle.In a word, by controlling the rotating speed of motor 5, can allow Hydraulic Pump 6 along with system need to be controlled the output of uninterrupted, larger flow is provided in the time of low speed, less flow is provided in the time of high speed, has played the effect of conserve energy, simultaneously for the different speed of a motor vehicle provides different power-assisted feels, play the turning efficiency of " low speed is light, stable at a high speed ".
Specifically, in a preferred embodiment, in ECU (Electrical Control Unit) 3, prestore the corresponding relation of the rotating speed of the speed of a motor vehicle, hydraulic fluid pressure and motor 5, and determine the rotating speed of motor 5 according to vehicle speed signal and pressure signal and corresponding relation.Also be that ECU (Electrical Control Unit) 6 is analyzed the speed information collecting and pressure information, according to the relation between predefined pressure information, speed information and motor speed, generate motor rotating speed of target signal, this motor rotating speed of target signal is transferred to motor 5, rotating speed when motor 5 regulates work according to rotating speed of target also drives Hydraulic Pump 6, and the flow of exporting by change Hydraulic Pump 6 is controlled and turned to required power-assisted size.
In a preferred embodiment, this vehicle booster steering swivel system also comprises device for detecting motor rotary speed 8, and device for detecting motor rotary speed 8 is connected with motor 5 and ECU (Electrical Control Unit) 3, for detection of the rotating speed of motor 5, and tach signal is transferred to ECU (Electrical Control Unit) 3.ECU (Electrical Control Unit) 3 is carried out Real-time Collection motor 5 tach signal by device for detecting motor rotary speed 8, carries out closed loop control, whether monitors motor 5 according to the definite rotating speed of target work of ECU (Electrical Control Unit) 3, and can revise in real time the rotating speed of motor 5, makes system more accurately steadily.
In a preferred embodiment, the oil outlet of deflector 2 is connected with fuel tank 4, is also to form hydraulic circuit between fuel tank 4, Hydraulic Pump 6, deflector 2, has simplified the structure of vehicle booster steering swivel system.
In a preferred embodiment, ECU (Electrical Control Unit) 3 is connected to obtain vehicle speed signal with CAN communication unit 9, faster.
In a preferred embodiment, pressure-detecting device 7 detects the hydraulic fluid pressure of deflector 2 entrance.Specifically, pressure-detecting device 7 can be arranged near the hydraulic tubing entrance of deflector 2.It will be understood by those skilled in the art that in other embodiments, pressure-detecting device 7 also can detect the hydraulic fluid pressure of deflector 2 inside.
The embodiment of the present invention also provides a kind of control method of vehicle booster steering swivel system.This vehicle booster steering swivel system comprises bearing circle 1, deflector 2, fuel tank 4, Hydraulic Pump 6 and motor 5.Deflector 2 is connected with bearing circle 1, and Hydraulic Pump 6 is connected between fuel tank 4 and deflector 2, with by hydraulic oil from fuel tank 4 pumps to deflector 2, provide power-assisted for turning to.Motor 5 is connected to drive Hydraulic Pump 6 to work with Hydraulic Pump 6.
The control method of this vehicle booster steering swivel system comprises the steps:
Detect the speed of a motor vehicle of vehicle; Specifically, can detect the speed of a motor vehicle by car speed sensor, then by CAN bus, vehicle speed signal is transferred to the ECU (Electrical Control Unit) of vehicle;
Detect the hydraulic fluid pressure of deflector; Specifically, can detect by pressure sensor the hydraulic fluid pressure of deflector, and pressure signal is transferred to the ECU (Electrical Control Unit) of vehicle;
According to the rotating speed of the speed of a motor vehicle and hydraulic fluid pressure control motor, specifically, in the ECU (Electrical Control Unit) of vehicle, can prestore the speed of a motor vehicle, the corresponding relation of the rotating speed of hydraulic fluid pressure and motor 5, and determine the rotating speed of motor 5 according to vehicle speed signal and pressure signal and corresponding relation, also be that ECU (Electrical Control Unit) is analyzed the speed information collecting and pressure information, according to predefined pressure information, relation between speed information and motor speed, generate motor rotating speed of target signal, this motor rotating speed of target signal is transferred to motor 5, rotating speed when motor 5 regulates work according to rotating speed of target also drives Hydraulic Pump 6, the flow of exporting by change Hydraulic Pump 6 is controlled and is turned to required power-assisted size.In a word, by controlling the rotating speed of motor 5, can allow Hydraulic Pump 6 along with system need to be controlled the output of uninterrupted, play the effect of conserve energy, for the different speed of a motor vehicle provides different power-assisted feels, play the turning efficiency of " low speed is light, stable at a high speed " simultaneously.
In a preferred embodiment, the control method of this vehicle booster steering swivel system also comprises the steps: to detect the rotating speed of motor 5, to judge that whether motor 5 is according to the speed of a motor vehicle and the determined rotational speed of hydraulic fluid pressure, if not, adjust the rotating speed of motor 5 so that it is by the speed of a motor vehicle and the determined rotational speed of hydraulic fluid pressure.Also be the tach signal of ECU (Electrical Control Unit) Real-time Collection motor 5, carry out closed loop control, whether monitor motor 5 according to the definite rotating speed of target work of ECU (Electrical Control Unit), and can revise in real time the rotating speed of motor 5, make system more accurately steadily.
In a preferred embodiment, hydraulic fluid pressure is the hydraulic fluid pressure of deflector 2 entrance.Specifically, pressure sensor can be set near the hydraulic tubing entrance of deflector 2 to detect the hydraulic fluid pressure of deflector 2 entrance.It will be understood by those skilled in the art that in other embodiments, also can detect the hydraulic fluid pressure of deflector 2 inside.
Vehicle booster steering swivel system and control method thereof that the embodiment of the present invention provides, by according to the rotating speed of the hydraulic fluid pressure control motor of the speed of a motor vehicle of vehicle and deflector, can allow the size that need to control flow of Hydraulic Pump along with system, both conserve energy, simultaneously again for the different speed of a motor vehicle provides different power-assisted feels, play the turning efficiency of " low speed is light, stable at a high speed ".
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a vehicle booster steering swivel system, it is characterized in that, comprise bearing circle, deflector, fuel tank, Hydraulic Pump, motor, pressure-detecting device and ECU (Electrical Control Unit), described deflector is connected with described bearing circle, described Hydraulic Pump is connected between described fuel tank and deflector, with by hydraulic oil from described fuel tank pump to described deflector, described motor is connected to drive described hydraulic pump works with described Hydraulic Pump, described pressure-detecting device is for detection of the hydraulic fluid pressure of described deflector, and pressure signal is transferred to described ECU (Electrical Control Unit), described ECU (Electrical Control Unit) is for obtaining the vehicle speed signal of vehicle, and according to the rotating speed of motor described in described pressure signal and vehicle speed signal control.
2. vehicle booster steering swivel system according to claim 1, is characterized in that, also comprises device for detecting motor rotary speed, and described device for detecting motor rotary speed is for detection of the rotating speed of described motor, and tach signal is transferred to described ECU (Electrical Control Unit).
3. vehicle booster steering swivel system according to claim 1, is characterized in that, the oil outlet of described deflector is connected with described fuel tank.
4. vehicle booster steering swivel system according to claim 1, is characterized in that, described ECU (Electrical Control Unit) is connected to obtain described vehicle speed signal with CAN communication unit.
5. vehicle booster steering swivel system according to claim 1, is characterized in that, described pressure-detecting device detects the hydraulic fluid pressure of described deflector entrance.
6. according to the vehicle booster steering swivel system described in claim 1 to 6 any one, it is characterized in that, in described ECU (Electrical Control Unit), prestore the corresponding relation of the rotating speed of the speed of a motor vehicle, hydraulic fluid pressure and described motor, and determine the rotating speed of described motor according to described vehicle speed signal and pressure signal and described corresponding relation.
7. the control method of a vehicle booster steering swivel system, described vehicle booster steering swivel system comprises bearing circle, deflector, fuel tank, Hydraulic Pump and motor, described deflector is connected with described bearing circle, described Hydraulic Pump is connected between described fuel tank and deflector, with by hydraulic oil from described fuel tank pump to described deflector, described motor is connected to drive described hydraulic pump works with described Hydraulic Pump, it is characterized in that, the control method of described vehicle booster steering swivel system comprises the steps:
Detect the speed of a motor vehicle of described vehicle;
Detect the hydraulic fluid pressure of described deflector;
According to the rotating speed of motor described in the described speed of a motor vehicle and hydraulic fluid pressure control.
8. the control method of vehicle booster steering swivel system according to claim 7, is characterized in that, also comprises the steps:
Detect the rotating speed of described motor, to judge that whether described motor is according to the described speed of a motor vehicle and the determined rotational speed of hydraulic fluid pressure, if not, adjust the rotating speed of described motor so that it is by the speed of a motor vehicle and the determined rotational speed of hydraulic fluid pressure.
9. the control method of vehicle booster steering swivel system according to claim 7, is characterized in that, described hydraulic fluid pressure is the hydraulic fluid pressure of described deflector entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119467.8A CN103879444A (en) | 2014-03-27 | 2014-03-27 | Vehicle power-assisted steering system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119467.8A CN103879444A (en) | 2014-03-27 | 2014-03-27 | Vehicle power-assisted steering system and control method thereof |
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| Publication Number | Publication Date |
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| CN103879444A true CN103879444A (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410119467.8A Pending CN103879444A (en) | 2014-03-27 | 2014-03-27 | Vehicle power-assisted steering system and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828595A (en) * | 2017-02-10 | 2017-06-13 | 宁夏百辰工业产品设计有限公司 | Steering machine idling operation hydraulic pressure adjustment flow screening component |
| CN115246437A (en) * | 2022-07-11 | 2022-10-28 | 湖南行必达网联科技有限公司 | Steering hydraulic control system and method and vehicle |
| CN118991918A (en) * | 2024-08-27 | 2024-11-22 | 中国重汽集团济南动力有限公司 | Steering system and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1994801A (en) * | 2006-12-31 | 2007-07-11 | 上海中上汽车科技有限公司 | Power steering unit of trackless wireless electric bus |
| JP2009255868A (en) * | 2008-04-21 | 2009-11-05 | Daikin Ind Ltd | Power steering device |
| CN102180192A (en) * | 2011-04-19 | 2011-09-14 | 廖志华 | Electric steering assisting power control system of new-energy car |
-
2014
- 2014-03-27 CN CN201410119467.8A patent/CN103879444A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1994801A (en) * | 2006-12-31 | 2007-07-11 | 上海中上汽车科技有限公司 | Power steering unit of trackless wireless electric bus |
| JP2009255868A (en) * | 2008-04-21 | 2009-11-05 | Daikin Ind Ltd | Power steering device |
| CN102180192A (en) * | 2011-04-19 | 2011-09-14 | 廖志华 | Electric steering assisting power control system of new-energy car |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828595A (en) * | 2017-02-10 | 2017-06-13 | 宁夏百辰工业产品设计有限公司 | Steering machine idling operation hydraulic pressure adjustment flow screening component |
| CN115246437A (en) * | 2022-07-11 | 2022-10-28 | 湖南行必达网联科技有限公司 | Steering hydraulic control system and method and vehicle |
| CN115246437B (en) * | 2022-07-11 | 2024-03-08 | 湖南行必达网联科技有限公司 | Steering hydraulic control system and method and vehicle |
| CN118991918A (en) * | 2024-08-27 | 2024-11-22 | 中国重汽集团济南动力有限公司 | Steering system and control method thereof |
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Application publication date: 20140625 |
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