CN110789286A - Vehicle roll control device - Google Patents
Vehicle roll control device Download PDFInfo
- Publication number
- CN110789286A CN110789286A CN201810867744.1A CN201810867744A CN110789286A CN 110789286 A CN110789286 A CN 110789286A CN 201810867744 A CN201810867744 A CN 201810867744A CN 110789286 A CN110789286 A CN 110789286A
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- CN
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- Prior art keywords
- hydraulic cylinder
- double
- vehicle
- rod hydraulic
- roll
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0162—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input mainly during a motion involving steering operation, e.g. cornering, overtaking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/90—Other conditions or factors
- B60G2400/98—Stabiliser movement
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The present invention relates to a vehicle roll control method. The most desirable mode of the roll control of the vehicle is to increase the outer support rigidity at the time of turning and to decrease the inner support rigidity so that the upper side of the vehicle body does not shift to the outer side or the vehicle body slightly shifts to the inner side at the time of turning. The method for preventing the vehicle from rolling by adopting the hydro-pneumatic suspension or the hydraulic suspension is to synchronously increase and decrease the hydraulic oil quantity in the inner and outer side supporting hydraulic cylinders during the steering by using the double-out-rod hydraulic cylinder, so that the inner side supporting rigidity is reduced and the outer side rigidity is increased when the vehicle is steered, thereby reducing the rolling.
Description
Technical Field
The present invention relates to a roll control device for a vehicle, and more particularly to a roll control device for a vehicle that is hydraulically or pneumatically suspended.
Background
The roll is caused by that the centrifugal force generated by the steering of the vehicle in the running process causes the vehicle body to deflect upwards and outwards, so that the bearing force of the outer side wheel is increased, and the bearing force of the inner side wheel is reduced. Roll affects the flexibility, body stability and riding comfort during steering, and the existing anti-roll control of the vehicle is divided into active control and passive control, and the main method is to increase the supporting rigidity.
The roll of the roll is controlled in a passive mode, wherein the support on the two sides is stressed together through mechanical or hydraulic linkage, so that the height difference of the support on the two sides is reduced, and the purpose of reducing the roll amount is achieved; or the spring stiffness is increased, and a large shock absorber with larger damping is adopted, so that the aim of reducing the roll amount is fulfilled. The passive mode has limited effect of controlling the side inclination, the flexibility and the comfort can not be considered at the same time, the flexibility and the stability are good, and the comfort is poor; otherwise, the flexibility and the controllability are poor. For example, the use of a relatively common mechanical roll bar anti-roll device and the use of a relatively stiff support spring are all passive roll control systems.
The roll of the vehicle is controlled in an active mode, the vehicle is usually provided with a variable damping shock absorber and a complex measurement and control system, the running state of the vehicle is monitored through the measurement and control system, and the measurement and control system controls the damping of the variable damping shock absorber to reduce the roll according to the running state of the vehicle. The active roll control mode has good effect, but has high cost and complex control system, and the situation that the steering flexibility and the comfort cannot be considered simultaneously exists in the steering process.
Disclosure of Invention
Technical problem to be solved by the invention
The problem that the steering flexibility and the comfort of the vehicle anti-roll device cannot be taken into consideration is solved.
The problems of high cost and complex control system of an active roll control mode are solved.
The problem that the supporting rigidity or the supporting height is difficult to change in an active roll control mode is solved.
Technical scheme of the invention
The roll control is preferably performed by increasing the outer support rigidity during steering and decreasing the inner support rigidity during steering so that the vehicle body does not shift upward or slightly shifts inward. The method adopted by the vehicle adopting the hydro-pneumatic suspension or the hydraulic suspension is to synchronously increase and decrease the hydraulic oil quantity in the inner and outer side supporting hydraulic cylinders during steering by using the double-out-rod hydraulic cylinder, so that the inner side supporting rigidity is reduced and the outer side rigidity is increased when the vehicle is steered, and the side inclination is reduced. The specific scheme is as follows:
scheme 1. a roll control device for a hydraulically or pneumatically suspended vehicle consisting of a double-out-rod hydraulic cylinder comprises: the device comprises an actuator, a front double-rod hydraulic cylinder, a rear double-rod hydraulic cylinder, a side-tipping measuring device, a controller and the like; the method is characterized in that: a liquid storage cavity at one side of the front double-outlet-rod hydraulic cylinder is connected with a supporting hydraulic cylinder on the left front-wheel supporting suspension, and a liquid storage cavity at the other side of the front double-outlet-rod hydraulic cylinder is connected with a corresponding supporting hydraulic cylinder on the right front-wheel supporting suspension; a liquid storage cavity on one side of the rear double-rod hydraulic cylinder is connected with a supporting hydraulic cylinder on the left rear wheel supporting suspension, and a liquid storage cavity on the other side of the rear double-rod hydraulic cylinder is connected with a supporting hydraulic cylinder on the corresponding right rear wheel supporting suspension; actuators for driving the pistons to move left and right are arranged on the front and rear double-rod hydraulic cylinders; the controller receives the roll signal of the roll measuring device and synchronously controls the two actuators to act according to the roll signal value, so that the pistons of the front and rear double-rod hydraulic cylinders synchronously move left and right.
The working principle is as follows:
when the piston of the double-rod hydraulic cylinder moves towards one side of the double-rod hydraulic cylinder, the liquid amount of the front and rear supporting hydraulic cylinders on the left side is increased, and the liquid amount of the front and rear supporting hydraulic cylinders on the right side is decreased. On the contrary, when the piston of the double-rod hydraulic cylinder moves to the other side, the liquid amount of the front and rear supporting hydraulic cylinders on the right side is reduced, the liquid amount of the front and rear supporting hydraulic cylinders on the left side is increased, the front and rear and the left and right are synchronously increased and decreased, and the supporting forces on the left and right are simultaneously changed. That is, when the piston moves to the left, the pressure of the left front and rear support cylinders increases, and the pressure of the right front and rear support cylinders decreases, thereby correcting the left roll. When the piston moves to the right, the pressure of the front and rear supporting hydraulic cylinders on the left side is reduced, the pressure of the front and rear supporting hydraulic cylinders on the right side is increased, and the right side inclination is corrected.
Roll measuring device: the device refers to a measuring device capable of measuring or calculating the lateral acceleration or lateral inclination value of the vehicle; a combination device that can indirectly calculate a roll value such as a combination of a vehicle speed sensor and a steering angle sensor, a device that can directly measure a roll value such as a single-axis gyro sensor or a multi-axis gyro sensor, a device that measures a roll value such as an acceleration sensor, and other devices that measure a roll value such as a laser gyro.
An actuator: the device can drive a hydraulic cylinder or a piston rod to move left and right, such as a hydraulic cylinder with a hydraulic power source, a displacement actuator taking a motor as power and the like.
A controller: the measured value of the roll measuring device is received and processed, and the actuator is controlled according to the measured roll value so as to control the left and right displacement of the double-rod hydraulic cylinder, thereby controlling the lifting or pressure increasing and decreasing value of the left and right suspension support hydraulic cylinders.
Supporting the hydraulic cylinder: the hydraulic cylinder has a direct supporting function on the vehicle body, and for example, a suspension hydraulic cylinder of a vehicle adopting hydraulic suspension or hydro-pneumatic suspension is a supporting hydraulic cylinder.
Means 2. the vehicle roll control apparatus according to claim 1, characterized in that: the device is provided with a measuring device for measuring the piston stroke or the piston position of the double-rod hydraulic cylinder. The measuring device additionally provided with the piston stroke or the piston position can set different liquid supply amounts according to different roll values in proportion and correct the corresponding roll amount. If the roll value is large, the liquid supply amount is increased, and the piston stroke is increased, and if the roll value is small, the liquid supply amount is decreased, and the piston stroke is decreased.
The method for measuring the piston stroke or the piston position is more, the length of the piston rod extending out of the hydraulic cylinder can be measured, a magnetic ring can be additionally arranged on the piston, and the position of the piston can be measured outside the cylinder barrel through magnetic induction.
Claim 3. the vehicle roll control device constituted by the double-rod hydraulic cylinder according to claim 1, 2, characterized in that: the front and rear double-rod hydraulic cylinders are linked hydraulic cylinders, and two linked pistons of the two linked double-rod hydraulic cylinders are driven by one actuator to enable the pistons of the double-rod hydraulic cylinders to move left and right.
Claim 4. the vehicle roll control apparatus according to claim 1, 2, characterized in that: the roll measuring device mainly comprises a vehicle speed sensor, a steering angle sensor and a controller for processing signals of the vehicle speed sensor and the steering angle sensor.
Claim 5. the vehicle roll control apparatus according to claim 1, 2, characterized in that: the roll measuring device consists of a lateral acceleration sensor and a controller that processes the acceleration sensor signal.
Means 6. the vehicle roll control apparatus according to the means 1, 2, characterized in that: the actuator mainly comprises a hydraulic cylinder, and the hydraulic cylinder drives the piston of the duplex double-rod hydraulic cylinder to move left and right so as to perform lateral tilt compensation. The displacement-performing hydraulic cylinder may be a double-out-rod hydraulic cylinder or other type of hydraulic cylinder.
The vehicle inclination control apparatus according to claim 7 is characterized in that: the actuator is mainly composed of a linear driving device driven by a motor.
Linear drive arrangement that motor drove includes: a rack and pinion device, a linear motor, a push rod motor and the like which convert the rotary motion of the motor into linear motion.
The invention has the advantages of
The vehicle has better anti-roll function, and the steering is more flexible and the comfort is better.
The roll control cost is lower, and the control system is simpler.
It becomes easier for roll control to change the support stiffness or support height.
Drawings
FIG. 1 is a schematic view of a roll control device comprising a triple double-out-rod hydraulic cylinder
Graphic numbering names:
1-left front support hydraulic cylinder 2-hydraulic oil pipe 3-front double-rod hydraulic cylinder left oil inlet and outlet
4-front double-rod hydraulic cylinder 5-front double-rod hydraulic cylinder right inlet and outlet 6-actuator (Displacement execution double-rod hydraulic cylinder)
7-actuator (double-rod hydraulic cylinder) right oil inlet and outlet 8-right front supporting hydraulic cylinder 9-triple double-rod hydraulic cylinder
10-actuator (double-rod hydraulic cylinder) left oil inlet and outlet 11-rear double-rod hydraulic cylinder right oil inlet and outlet
12-rear right support hydraulic cylinder 13-rear double-rod hydraulic cylinder 14-three-position four-way reversing solenoid valve
15 hydraulic oil pump 16-rear double-rod hydraulic cylinder left oil inlet and outlet 17-rear left support hydraulic cylinder.
Detailed Description
The preferred scheme is as follows: side-tipping control device composed of triple double-rod hydraulic cylinder
The side control device includes: the hydraulic system comprises a front double-rod hydraulic cylinder, a rear double-rod hydraulic cylinder, a displacement execution double-rod hydraulic cylinder, a hydraulic source, a three-position four-way electromagnetic valve, a lateral acceleration sensor, a controller, a displacement sensor and the like.
As shown in fig. 1: the front double-rod hydraulic cylinder (4), the rear double-rod hydraulic cylinder (13) and the actuator (6) (displacement execution double-rod hydraulic cylinder) form a three-linkage hydraulic cylinder (9); the displacement sensor measures the displacement value of the double-rod hydraulic cylinder piston; the displacement execution double-rod hydraulic cylinder (6) is provided with a hydraulic source by a hydraulic pump (15), and the action of the displacement execution double-rod hydraulic cylinder is controlled by a three-position four-way valve (14) to drive a three-linkage hydraulic cylinder (9) to act. The controller receives a signal of the lateral acceleration sensor and a bit signal of the displacement sensor, and controls the three-position four-way solenoid valve (14) to act according to the roll signal and the displacement signal, so as to control the supporting rigidity of the front, rear, left and right supporting hydraulic cylinders (1, 8, 17, 12) and correct the roll caused by steering.
The working principle is as follows:
when the vehicle turns, the vehicle body can be subjected to the action of lateral force (centrifugal force), the lateral acceleration sensor can measure a lateral acceleration value and a lateral acceleration direction (left lateral acceleration or right lateral acceleration), and the controller receives a measurement signal of the lateral acceleration sensor and a displacement signal of the displacement sensor and controls the piston displacement of the triple hydraulic cylinder according to the roll signal and the displacement signal.
When the vehicle turns to left, controller control solenoid valve (14) action makes displacement execution pneumatic cylinder (6) business turn over oil (10) oil feed on a left side, and right business turn over oil mouth (7) produce oil, according to the signal value size of heeling proportional control piston to the right side removal, the piston that makes two pole pneumatic cylinders (4, 13) of going out around the messenger moves to the right side in step, the result:
hydraulic oil in the liquid storage cavity on the right side of the double-rod hydraulic cylinder respectively enters the right front and rear supporting hydraulic cylinders (8, 12), so that the rigidity or height of the right front and rear supporting hydraulic cylinders (8, 12) is increased; meanwhile, hydraulic oil of the left front and rear supporting hydraulic cylinders (1, 17) can flow into the left liquid storage cavities of the front and rear double-rod hydraulic cylinders (4, 13), so that the hydraulic oil of the left front and rear supporting hydraulic cylinders (1, 17) is reduced, and the rigidity or the height of the left front and rear supporting hydraulic cylinders (1, 17) is reduced.
When turning to on the right side of the vehicle, the controller controls the solenoid valve action, makes the displacement execution pneumatic cylinder right side business turn over oil feed, and left business turn over oil mouth oil outlet moves to the left side according to the signal value proportional control piston that heels, and the piston of two play pole pneumatic cylinders moves left in step around making, the result: hydraulic oil in a liquid storage cavity on the left side of the double-rod hydraulic cylinder respectively enters the left front and rear supporting hydraulic cylinders, so that the rigidity or height of the left front and rear supporting hydraulic cylinders is increased; meanwhile, hydraulic oil of the front and rear right supporting hydraulic cylinders can flow into the right liquid storage cavities of the front and rear double-rod hydraulic cylinders, so that the hydraulic oil of the front and rear right supporting hydraulic cylinders is reduced, and the rigidity or the height of the front and rear right supporting hydraulic cylinders is reduced.
Claims (7)
1. A roll control device for a hydraulically or pneumatically suspended vehicle comprising a double-extension rod hydraulic cylinder, comprising: the device comprises an actuator, a front double-rod hydraulic cylinder, a rear double-rod hydraulic cylinder, a side-tipping measuring device, a controller and the like; the method is characterized in that: a liquid storage cavity at one side of the front double-outlet-rod hydraulic cylinder is connected with a supporting hydraulic cylinder on the left front-wheel supporting suspension, and a liquid storage cavity at the other side of the front double-outlet-rod hydraulic cylinder is connected with a corresponding supporting hydraulic cylinder on the right front-wheel supporting suspension; a liquid storage cavity on one side of the rear double-rod hydraulic cylinder is connected with a supporting hydraulic cylinder on the left rear wheel supporting suspension, and a liquid storage cavity on the other side of the rear double-rod hydraulic cylinder is connected with a supporting hydraulic cylinder on the corresponding right rear wheel supporting suspension; actuators for driving the pistons to move left and right are arranged on the front and rear double-rod hydraulic cylinders; the controller receives the roll signal of the roll measuring device and synchronously controls the two actuators to act according to the roll signal value, so that the pistons of the front and rear double-rod hydraulic cylinders synchronously move left and right.
2. The vehicle roll control device of claim 1 wherein: the device is provided with a measuring device for measuring the piston stroke or the piston position of the double-rod hydraulic cylinder.
3. The vehicle roll control apparatus according to claim 1, 2, characterized in that: the front and rear double-rod hydraulic cylinders are linked hydraulic cylinders, and two linked pistons of the two linked double-rod hydraulic cylinders are driven by one actuator.
4. The vehicle roll control apparatus according to claim 1, 2, characterized in that: the roll measuring device mainly comprises a vehicle speed sensor, a steering angle sensor and a controller for processing signals of the vehicle speed sensor and the steering angle sensor.
5. The vehicle roll control apparatus according to claim 1, 2, characterized in that: the roll measuring device consists of a lateral acceleration sensor and a controller that processes the acceleration sensor signal.
6. The vehicle roll control apparatus according to claim 1, 2, characterized in that: the actuator mainly comprises a hydraulic cylinder, and the hydraulic cylinder drives the piston of the duplex double-rod hydraulic cylinder to move left and right so as to perform lateral tilt compensation.
7. The vehicle inclination control apparatus according to claims 1, 2, characterized in that: the actuator is mainly composed of a linear driving device driven by a motor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867744.1A CN110789286A (en) | 2018-08-02 | 2018-08-02 | Vehicle roll control device |
| PCT/CN2019/086919 WO2020024652A1 (en) | 2018-08-02 | 2019-05-14 | Vehicle roll control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867744.1A CN110789286A (en) | 2018-08-02 | 2018-08-02 | Vehicle roll control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110789286A true CN110789286A (en) | 2020-02-14 |
Family
ID=69425588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810867744.1A Withdrawn CN110789286A (en) | 2018-08-02 | 2018-08-02 | Vehicle roll control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110789286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111959219A (en) * | 2020-09-03 | 2020-11-20 | 摩登汽车有限公司 | Car stable system and car |
-
2018
- 2018-08-02 CN CN201810867744.1A patent/CN110789286A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111959219A (en) * | 2020-09-03 | 2020-11-20 | 摩登汽车有限公司 | Car stable system and car |
| CN111959219B (en) * | 2020-09-03 | 2023-01-10 | 摩登汽车有限公司 | Car stable system and car |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200214 |
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| WW01 | Invention patent application withdrawn after publication |