CN203739973U - Intelligent steering control device - Google Patents
Intelligent steering control device Download PDFInfo
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- CN203739973U CN203739973U CN201420091101.XU CN201420091101U CN203739973U CN 203739973 U CN203739973 U CN 203739973U CN 201420091101 U CN201420091101 U CN 201420091101U CN 203739973 U CN203739973 U CN 203739973U
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- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model provides an intelligent steering control device. The intelligent steering control device comprises an assistance control part, a detector and a controller. The assistance control part controls pressure of hydraulic oil output to an assistance oil cavity, and control over steering assistance is achieved. The detector detects the running state of wheels and comprises a torque sensor, a pressure sensor and a speed sensor. The torque sensor detects the steering torque of a current vehicle and generates a torque signal corresponding to the steering torque of the vehicle. The pressure sensor detects output pressure of the current assistance control part and generates a pressure signal corresponding to output pressure of the assistance control part. The speed sensor detects the running speed of the current vehicle and generates a speed signal corresponding to the running speed. The controller controls the switch state of the assistance control part according to the torque signal, and controls the amplitude of the opening of the assistance control part according to the torque signal, the pressure signal and the speed signal, and therefore the steering torque of the vehicle, the output pressure of the assistance control part and the running speed of the vehicle accord with preset parameters.
Description
Technical field
The utility model relates to vehicle control field, and is particularly related to a kind of intelligent steering controlling device
Background technology
The vehicle that load-carrying is larger, front axle load is larger, and simple drives wheel steering by manpower, and it is obviously painstaking to drive.Therefore, on passenger vehicle and lorry, generally installed deflector additional.Deflector in the time of chaufeur steering direction dish, the driving intensity that can provide power steering to alleviate chaufeur.
The deflector of using on vehicle, its power provides by the blade-type pump being arranged on driving engine, and its top design has steering control valve, while beating direction in bearing circle left and right, steering control valve provides different oil masses to the power-assisted oil pocket of deflector respectively, and providing of power steering is provided.Traditional turn to control, in steering control valve, be provided with the torsion bar of the appropriate and closure dish of a rigidity.The aperture of steering control valve is that bearing circle is controlled by torsion bar.The hand-power of chaufeur veer dish increases, and the moment of torsion of torsion bar increases, and the delivery pressure of steering control valve increases, and corresponding power steering also increases, and both relations as shown in Figure 1.It is this that only to rely on control that wheel steering realizes power steering to be applied to hand-power dependence on bearing circle to chaufeur very large.And different vehicle moving velocity its to turn to required steering torque be different.Especially in the time of high vehicle speeds, if the hand-power increase of chaufeur steering wheel rotation makes power steering excessive, will there is turning to unstable phenomenon in vehicle, and this is quite dangerous.
In addition, existing steering control valve, does not have inhibiting device, and chaufeur can unconfinedly be beaten direction to hard-over by deflector, and in the time that vehicle steering angle is excessive, the excessive power-assisted that exports deflector to will be damaged vehicle propons.
Utility model content
In view of the control human element impact of power steering in above-mentioned prior art is large, the problem that the low danger of control accuracy is high, provides a kind of intelligent steering controlling device.
To achieve these goals, the utility model provides a kind of intelligent steering controlling device, comprising: Power assisted control part, detector and controller.The control of Power assisted control part exports the size of the hydraulic fluid pressure of power-assisted oil pocket to, realizes the control of power steering.Detector detects the motoring condition of wheel, comprises torque sensor, pressure sensor and speed sensor.Torque sensor detects the steering torque when vehicle in front, and the formation torque signal corresponding with Vehicular turn moment of torsion.Pressure sensor detects the delivery pressure of current Power assisted control part, and the formation pressure signal corresponding with the delivery pressure of Power assisted control part.Speed sensor detects the moving velocity when vehicle in front, and the formation speed signal corresponding with Vehicle Speed.Controller is electrically connected respectively torque sensor, pressure sensor, speed sensor and Power assisted control part.Controller is opened Power assisted control part according to torque signal; And according to the aperture size of pressure signal and speed signal control Power assisted control part, make the steering torque of vehicle, delivery pressure and the Vehicle Speed of Power assisted control part meet parameter preset.
In the utility model one embodiment, intelligent steering controlling device also comprises angular transducer, detects the steering angle when vehicle in front, forms the angle signal corresponding with steering angle, and angle signal is offered to controller.Controller compares this angle signal and expectation value, and when angle signal reaches expectation value, controller reduces the aperture size of Power assisted control part, makes the delivery pressure of Power assisted control part meet expectation value.
In the utility model one embodiment, angular transducer is arranged at vehicle propons.
In the utility model one embodiment, Power assisted control part comprises change-over valve and valve opening device, and change-over valve is any in steering valve, sliding type or plane formula.
In the utility model one embodiment, change-over valve is H type three-position four-way valve.
In the utility model one embodiment, torque sensor is arranged at any in the attaching parts of bearing circle, deflector or bearing circle and deflector.
In the utility model one embodiment, pressure sensor is arranged at Power assisted control part.
In the utility model one embodiment, speed sensor is arranged at the drive wheel of vehicle.
In sum, the utility model detects the situation that turns to of vehicle in real time by torque sensor, and controller receives the torque signal that torque sensor provides, and opens Power assisted control part according to this detection signal.When vehicle is during in steering state, pressure sensor detects delivery pressure the mineralization pressure signal of Power assisted control part in real time, and speed sensor detects in real time when the moving velocity of vehicle in front and forms speed signal.Controller, according to the aperture size of torque signal, speed signal and pressure signal control Power assisted control part, makes three's relation meet parameter preset.Due to chaufeur, to be applied to the excessive power steering that makes of power on bearing circle excessive in the time of high speed steering to prevent automobile, finally occurs unstable phenomenon.
In addition, the intelligent steering controlling device that the utility model provides is also provided with angular transducer, and angular transducer detects the steering angle of vehicle in real time, and angulation signal.And controller judges whether this angle signal reaches expectation value, if so, controller is exported control signal, reduces the aperture size of Power assisted control part, prevent and excessively deflector is got to end position because of chaufeur and make power steering excessive, finally damage the phenomenon of vehicle propons.
For above-mentioned and other objects, features and advantages of the present utility model can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Brief description of the drawings
Figure 1 shows that the graph of relation of input torque and delivery pressure in existing steering control valve.
Figure 2 shows that the functional block diagram of the intelligent steering controlling device that the utility model one embodiment provides.
Figure 3 shows that the delivery pressure three's of steering torque, Vehicle Speed, the Power assisted control part of the intelligent steering controlling device that the utility model one embodiment provides graph of relation.
Figure 4 shows that the middle vehicle steering angle of intelligent steering controlling device that the utility model one embodiment provides and the graph of relation of the delivery pressure of Power assisted control part.
Detailed description of the invention
Figure 1 shows that the graph of relation of input torque and delivery pressure in existing steering control valve.Figure 2 shows that the functional block diagram of the intelligent steering controlling device that the utility model one embodiment provides.Figure 3 shows that the delivery pressure three's of steering torque, Vehicle Speed, the Power assisted control part of the intelligent steering controlling device that the utility model one embodiment provides graph of relation.Figure 4 shows that the middle vehicle steering angle of intelligent steering controlling device that the utility model one embodiment provides and the graph of relation of the delivery pressure of Power assisted control part.See also Fig. 1 to Fig. 4.
The intelligent steering controlling device that the present embodiment provides, comprising: Power assisted control part 1, detector 2 and controller 3.The size that Power assisted control part 1 is controlled the hydraulic fluid pressure that exports power-assisted oil pocket to, realizes the control of power steering.Detector 2 detects the motoring condition of wheel, comprises torque sensor 21, pressure sensor 22 and speed sensor 23.The steering torque that torque sensor 21 detects when vehicle in front, and the formation torque signal corresponding with Vehicular turn moment of torsion.Pressure sensor 22 detects the delivery pressure of current Power assisted control part 1, and the formation pressure signal corresponding with the delivery pressure of Power assisted control part 1.The moving velocity that speed sensor 23 detects when vehicle in front, and the formation speed signal corresponding with moving velocity.Controller 3 is electrically connected respectively torque sensor 21, pressure sensor 22, speed sensor 23 and Power assisted control part 1.Controller 3 is according to the on off state of torque signal control Power assisted control part 1.And according to the aperture size of pressure signal and speed signal control Power assisted control part 1, make the steering torque of vehicle, delivery pressure and the Vehicle Speed of Power assisted control part 1 meet parameter preset.
In existing steering control valve, the aperture of steering control valve is to be controlled by wheel steering moment of torsion completely.Wheel steering is larger, and the steering torque of vehicle is larger, and the delivery pressure of steering control valve is larger, and corresponding power steering is also larger.In the time that automobile high-speed turns to, excessive power steering will make vehicle occur unstable phenomenon.For overcoming this problem, in the intelligent steering controlling device that the present embodiment provides, by being set, torque sensor 21 detects vehicle steering torque size, and what the size of this moment of torsion characterized is exactly the torque signal of vehicle.Once torque sensor 21 detects the moment of torsion of torsion bar and changes, controller 3 these torque signals of reception, and send a control signal according to this torque signal and open Power assisted control part 1.When Power assisted control part 1 is in opening, the pressure sensor 22 being arranged on Power assisted control part 1 detects the delivery pressure of Power assisted control part 1 in real time, and this pressure signal is offered to controller 3.In this simultaneously, controller 3 also receives the vehicle speed signal that the speed sensor 23 that is arranged on driving wheel of vehicle provides.
The delivery pressure of the steering torque of controller 3 to vehicle, Power assisted control part 1 and Vehicle Speed three processes and compare with the parameter preset (as Fig. 2) setting in advance in controller 3.In the parameter preset of Fig. 2, in the time that the steering torque of vehicle is identical, Vehicle Speed increases, and the delivery pressure of Power assisted control part 1 reduces.In the parameter preset that the present embodiment provides, in the time that the moving velocity of vehicle is constant, the delivery pressure of the steering torque of vehicle and Power assisted control part 1 meets y=ax2 after matching.Particularly, in the time that the moving velocity of vehicle is zero, the delivery pressure of steering torque and Power assisted control part 1 meets above-mentioned functional relation after matching, and a equals 0.6; Along with the increase of the moving velocity of vehicle, the rate of rise of parabolic curve diminishes, and in the time that Vehicle Speed reaches 100km/h, the delivery pressure of steering torque and Power assisted control part 1 still meets above-mentioned functional relation, but a equals 0.036.In the time that the moving velocity of vehicle is positioned at 0km/h～100km/h, coefficient a is between 0.036～0.6, and be positioned at 100km/h when above when Vehicle Speed, a is greater than 0.036, and now, along with the increase of steering torque, the delivery pressure of Power assisted control part 1 rises very slow, accordingly, the power steering that can provide is also very little, thereby prevents from, in the time that vehicle high-speed is turned, making the unstable phenomenon of vehicle because the power steering providing is excessive.But the utility model is not limited in any way this.
The intelligent steering controlling device that the utility model provides is taking the moving velocity of vehicle as benchmark, if delivery pressure is greater than setup parameter in Fig. 2, the aperture of Power assisted control part 1 exported control signal and reduces by controller 3, in the situation that keeping torque signal and speed signal constant, make the delivery pressure of Power assisted control part 1 meet curve in Fig. 3.By torque sensor 21, pressure sensor 22, speed sensor 23 threes' continuous detection and the real-time processing of controller 1 to above-mentioned three detected signals of sensor, this intelligent steering controlling device can guarantee vehicle in the time turning in best motoring condition, avoid the phenomenon that occurs that vehicle is unstable.
In the present embodiment, for improving control accuracy, speed sensor 23 is arranged to the drive wheel of vehicle.Drive wheel is directly connected with driving device, and the rotating speed of driving engine output transfers to drive wheel through transmission shaft, and degradation of energy is little, can better characterize the moving velocity of vehicle.And torque sensor 21 is arranged at bearing circle, according to bearing circle at the steering torque that turns to detect vehicle.But the utility model is not limited in any way this.In other embodiment, torque sensor 21 also can be arranged on the attaching parts of deflector or bearing circle and deflector.In the present embodiment, Power assisted control part 1 comprises change-over valve 11 and valve opening device 12, and valve opening device 12 receives control signal that controller 3 exports and according to the aperture of this control signal control change-over valve.And change-over valve 11 is sliding type, concrete model is H type three-position four-way valve, and valve opening device 12 is drive motor.But the utility model is not limited in any way this.In other embodiment, change-over valve 11 can be rotary type or plane formula.In the present embodiment, controller 3 is ECU, and the power supply of powering for whole device is Vehicular accumulator cell.
Further, due to traditional steering control valve, inhibiting device is not set, chaufeur can unconfinedly be got to end position by recirculating ball power steering gear.And recirculating ball power steering gear steering angle is larger, power steering is larger, and excessive power steering is almost all applied on the propons of vehicle, very easily causes the damage of propons.The intelligent steering controlling device that the utility model provides, arranges angular transducer 24 on the propons of vehicle.The steering angle that angular transducer 24 detects propons in real time characterizes the steering angle of vehicle, and sends this angle signal to controller 3.In the time that this steering angle value exceedes expectation value, controller 3 is exported control signal, reduces the aperture of Power assisted control part 1, and the delivery pressure of Power assisted control part 1 is reduced, and corresponding power steering also reduces.In the present embodiment, the expectation value of steering angle is 35 degree, and when the steering angle of vehicle is greater than 35 while spending, controller 3 outputs control signals to Power assisted control part 1, reduces the aperture size of Power assisted control part 1, from reducing its delivery pressure.In the time that the steering angle of vehicle is spent in 35 degree～45, the delivery pressure of Power assisted control part 1 is linear to be reduced, and is greater than 45 while spending when steering angle, and the delivery pressure of Power assisted control part 1 is constant in 5MPa.The relation of the delivery pressure of Power assisted control part 1 and the steering angle of vehicle as shown in Figure 4.Wherein the both direction of X-axis is the parameter that vehicle turns left or turns right.But the utility model is not limited in any way the setting of expectation value.In other embodiment, user can arrange according to different vehicles.In sum, the utility model detects the situation that turns to of vehicle in real time by torque sensor 21, and controller 3 receives the torque signal that torque sensor 21 provides, and opens Power assisted control part 1 according to this detection signal.When vehicle is during in steering state, pressure sensor 22 detects delivery pressure the mineralization pressure signal of Power assisted control part 1 in real time, and speed sensor 23 detects in real time when the moving velocity of vehicle in front and forms speed signal.Controller 3, according to the aperture size of torque signal, speed signal and pressure signal control Power assisted control part 1, makes three's relation meet setting requirement.Due to chaufeur, to be applied to the excessive power-assisted that makes of power on bearing circle excessive in the time of high speed steering to prevent automobile, and unstable phenomenon finally occurs.
In addition, the intelligent steering controlling device that the utility model provides is also provided with angular transducer 24, and angular transducer 24 detects the steering angle of vehicle in real time, and angulation signal.And controller 3 judges whether this angle signal reaches expectation value, if controller 3 is exported control signal, reduce the aperture size of Power assisted control part 1, prevent and excessively deflector is got to end position because of chaufeur and make power steering excessive, finally damage the phenomenon of vehicle propons.
Although the utility model is disclosed as above by preferred embodiment; but not in order to limit the utility model; anyly know this skill person; not departing from spirit and scope of the present utility model; can do a little change and retouching, therefore protection domain of the present utility model is when being as the criterion depending on claims scope required for protection.
Claims (8)
1. an intelligent steering controlling device, is characterized in that, comprising:
Power assisted control part, control exports the size of the hydraulic fluid pressure of power-assisted oil pocket to, realizes the control of power steering;
Detector, the motoring condition of detection vehicle, comprising:
Torque sensor, detects the steering torque when vehicle in front, and the formation torque signal corresponding with described Vehicular turn moment of torsion;
Pressure sensor, detects the delivery pressure of current Power assisted control part the formation pressure signal corresponding with the delivery pressure of described Power assisted control part;
Speed sensor, detects the moving velocity when vehicle in front, and the formation speed signal corresponding with described moving velocity;
Controller, is electrically connected respectively described torque sensor, pressure sensor, speed sensor and Power assisted control part; Described controller is according to the on off state of Power assisted control part described in described torque signal control; And according to the aperture size of Power assisted control part described in described torque signal, pressure signal and speed signal control,
Make the steering torque of vehicle, delivery pressure and the Vehicle Speed of Power assisted control part meet parameter preset.
2. intelligent steering controlling device according to claim 1, it is characterized in that, described intelligent steering controlling device also comprises angular transducer, detects the steering angle when vehicle in front, form the angle signal corresponding with described steering angle, and described angle signal is offered to controller; Controller compares this angle signal and expectation value, and when angle signal reaches expectation value, controller reduces the aperture size of Power assisted control part, makes the delivery pressure of Power assisted control part meet expectation value.
3. intelligent steering controlling device according to claim 2, is characterized in that, described angular transducer is arranged at vehicle propons.
4. intelligent steering controlling device according to claim 1, is characterized in that, described Power assisted control part comprises change-over valve and valve opening device, and described change-over valve is any in steering valve, sliding type or plane formula.
5. intelligent steering controlling device according to claim 4, is characterized in that, described change-over valve is H type three-position four-way valve.
6. intelligent steering controlling device according to claim 1, is characterized in that, described torque sensor is arranged at any in the attaching parts of bearing circle, deflector or bearing circle and deflector.
7. intelligent steering controlling device according to claim 1, is characterized in that, described pressure sensor is arranged at described Power assisted control part.
8. intelligent steering controlling device according to claim 1, is characterized in that, described speed sensor is arranged at the drive wheel of vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091101.XU CN203739973U (en) | 2014-03-03 | 2014-03-03 | Intelligent steering control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091101.XU CN203739973U (en) | 2014-03-03 | 2014-03-03 | Intelligent steering control device |
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| CN203739973U true CN203739973U (en) | 2014-07-30 |
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| CN201420091101.XU Expired - Lifetime CN203739973U (en) | 2014-03-03 | 2014-03-03 | Intelligent steering control device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909969A (en) * | 2014-03-03 | 2014-07-09 | 杭州世宝汽车方向机有限公司 | Intelligent steering control device and control method thereof |
| CN105151117A (en) * | 2015-08-28 | 2015-12-16 | 南京航空航天大学 | Electronically controlled hydraulic power steering system and multi-objective optimization method based on system |
| CN113635967A (en) * | 2021-09-17 | 2021-11-12 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
-
2014
- 2014-03-03 CN CN201420091101.XU patent/CN203739973U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909969A (en) * | 2014-03-03 | 2014-07-09 | 杭州世宝汽车方向机有限公司 | Intelligent steering control device and control method thereof |
| CN105151117A (en) * | 2015-08-28 | 2015-12-16 | 南京航空航天大学 | Electronically controlled hydraulic power steering system and multi-objective optimization method based on system |
| CN105151117B (en) * | 2015-08-28 | 2017-08-04 | 南京航空航天大学 | A kind of Electro-Hydraulic Power Steering System and the Multipurpose Optimal Method based on the system |
| CN113635967A (en) * | 2021-09-17 | 2021-11-12 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
| CN113635967B (en) * | 2021-09-17 | 2022-04-26 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
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Granted publication date: 20140730 |
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