CN114771190A - Automobile active suspension structure and control method thereof - Google Patents
Automobile active suspension structure and control method thereof Download PDFInfo
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- CN114771190A CN114771190A CN202210606884.XA CN202210606884A CN114771190A CN 114771190 A CN114771190 A CN 114771190A CN 202210606884 A CN202210606884 A CN 202210606884A CN 114771190 A CN114771190 A CN 114771190A
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- 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
- B60G17/019—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 the type of sensor or the arrangement thereof
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- 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
- B60G17/019—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 the type of sensor or the arrangement thereof
- B60G17/01933—Velocity, e.g. relative velocity-displacement sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/08—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces characterised by use of gyroscopes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/30—Height or ground clearance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses an automobile driving suspension structure and a control method thereof, and relates to the technical field of automobile chassis. The invention improves the original McPherson type active suspension, adds an electromagnetic damping structure on the active suspension, thereby not only relieving the defects of easy oil leakage, anti-roll and weak braking nodding capacity of the original shock absorber, but also actively controlling and adjusting the automobile suspension to enable the automobile to adapt to various working conditions.
Description
Technical Field
The invention relates to the technical field of automobile chassis, in particular to an automobile active suspension structure and a control method thereof.
Background
The conventional automobile has various suspensions, which can be roughly classified into a macpherson type independent suspension, a wishbone type independent suspension, a trailing arm type independent suspension, a double-wishbone type independent suspension and a multi-link type independent suspension according to the structure. The Macpherson type independent suspension is widely applied to the Macpherson type independent suspension, the Macpherson type independent suspension is composed of a spiral spring, a shock absorber and a triangular lower swing arm, and a transverse stabilizer bar can be added to most of automobile types. The suspension has the advantages of low cost, simple manufacture, small occupied space and light weight; the shock absorber has the disadvantages of poor stability, poor anti-roll and braking nodding capacity, low durability, easy oil leakage and periodic replacement, and the problem cannot be solved fundamentally after the stabilizer bar is added.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an active suspension structure of an automobile and a control method thereof.
In order to solve the above problems, the present invention provides the following technical solutions:
the active suspension structure of the automobile comprises a wheel, wherein a MacPherson type active suspension composed of a transverse stabilizer bar and an axle is arranged on the wheel, and an electromagnetic shock absorber is arranged above the MacPherson type active suspension.
The invention also provides a control method of the automobile active suspension structure, which comprises the following steps:
a parking state: when the whole vehicle circuit is connected, the vehicle VCU can self-check whether the vehicle owner opens the active suspension, if the VCU confirms the opening state can give a signal to the active suspension control module, the control module can adjust the vehicle height to be a normal state, and the suspension hardness is adjusted to be moderate; if the starting state is not determined, the vehicle speed sensor feeds the vehicle speed information back to the VCU, the VCU judges whether the vehicle is in the parking state, the vehicle-mounted gyroscope judges whether the position of the vehicle is on a ramp or an uneven road surface, if the vehicle is on a smooth road without a ramp, the VCU sends an instruction to the active suspension control module, and the control module can adjust the suspension state, reduce the suspension height and lower the posture of the whole vehicle; if the gyroscope judges that the automobile is on a ramp or an uneven road surface, the VCU adjusts the state of the suspension according to the state of the whole automobile fed back by the gyroscope, so that the state of the whole automobile is in a horizontal state;
and (3) driving state: the signal transmitted by the vehicle speed sensor is fed back to the VCU, if the VCU judges that the vehicle is in a running state, the automobile height sensor, the vehicle-mounted radar and the gyroscope feed back the information of turning and road surface of the vehicle to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust;
when the vehicle speed sensor judges that the vehicle speed is reduced to 0, a parking signal is fed back to the VCU, the VCU judges whether the vehicle is stopped and a parking gear is hung and a hand brake is pulled up, and if not, the original state is continuously kept; if the vehicle is detected to be hung on a parking gear and the hand brake is pulled up, the sensor on the vehicle door can detect whether the vehicle door is opened or not, if the vehicle door is not opened, the VCU sends an instruction to the active suspension controller, and the controller controls to reduce the height of the suspension, lower the posture of the whole vehicle and make the preparation for passengers to get off; if a vehicle door opening signal is detected, the VCU sends an instruction to the active suspension controller, the kneeling direction of the whole vehicle side is selected according to the opened vehicle door, and if the two sides are opened simultaneously, the suspension height of the whole vehicle is reduced, so that a vehicle owner presets the getting-off height;
when the vehicle is flamed out but the key of the vehicle is detected to be in the vehicle, the power supply of the whole vehicle is not disconnected in a half-hour working mode, the whole vehicle is in a low-attitude state, and the preparation for getting off the vehicle of passengers is made.
The further technology of the invention is as follows:
preferably, the specific way of adjusting the suspension in the driving state is as follows:
the road surface is relatively flat:
at the moment, when the speed fed back by the speed sensor is greater than or equal to 110km/h, the VCU sends a signal to the control module to control the active suspension to adjust the suspension hardness to a 'hard suspension' state so as to reduce the height of the whole vehicle, and the front axle is lower than the rear axle in attitude;
if the vehicle speed is judged to be more than or equal to 30km/h and less than 80km/h at the moment, the VCU sends an instruction to the suspension controller to adjust the suspension hardness and the vehicle height to be in a moderate state, the vehicle height sensor, the vehicle-mounted radar and the gyroscope feed back vehicle turning and road surface information to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust;
if the vehicle speed is less than 30km/h at the moment, the VCU sends an instruction to the suspension controller to adjust the suspension hardness and the vehicle height to be in a soft suspension state, the automobile height sensor, the vehicle-mounted radar and the gyroscope feed back vehicle turning and road surface information to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust;
uneven road surface:
if the automobile is in an uneven road state, a gyroscope and a height sensor feed back road signals to a VCU, the VCU sends signals to an active suspension controller, and the controller adjusts the suspension hardness to be in a soft suspension state so as to meet the requirement that wheels have larger movement space when the automobile runs on the uneven road.
The beneficial effects of the above technical scheme are:
the invention improves the original McPherson type active suspension, adds an electromagnetic damping structure on the active suspension, thereby not only relieving the defects of easy oil leakage, anti-roll and weak braking nodding capacity of the original shock absorber, but also actively controlling and adjusting the automobile suspension to enable the automobile to adapt to various working conditions.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a schematic structural diagram of an active suspension of an automobile according to the present invention;
FIG. 2 is a flow chart of a method for controlling an active suspension structure of an automobile according to the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an active suspension structure of an automobile comprises a wheel 1, wherein a macpherson active suspension consisting of a stabilizer bar 4 and an axle 2 is arranged on the wheel 1, and an electromagnetic damper 3 is arranged above the macpherson active suspension.
As shown in fig. 2, the present invention further provides a control method of an active suspension structure of an automobile, the working principle or working process of which is as follows:
1. a parking state: when the whole vehicle circuit is connected, the vehicle VCU can self-check whether the vehicle owner opens the active suspension, if the VCU confirms the opening state can give a signal to the active suspension control module, the control module can adjust the vehicle height to be a normal state, and the suspension hardness is adjusted to be moderate; if the starting state is not determined, the vehicle speed sensor feeds the vehicle speed information back to the VCU, the VCU judges whether the vehicle is in the parking state, the vehicle-mounted gyroscope judges whether the position of the vehicle is on a ramp or an uneven road surface, if the vehicle is on a smooth road without a ramp, the VCU sends an instruction to the active suspension control module, and the control module can adjust the suspension state, reduce the suspension height and lower the posture of the whole vehicle; if the gyroscope judges that the automobile is on a ramp or an uneven road surface, the VCU adjusts the state of the suspension according to the whole automobile state fed back by the gyroscope, so that the whole automobile state is in a horizontal state.
2. And (3) driving state: and if the VCU judges that the vehicle is in a running state, the automobile height sensor, the vehicle-mounted radar and the gyroscope feed back the information of the turning and the road surface of the vehicle to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust.
(1) The pavement is relatively flat:
however, when the speed fed back by the speed sensor is greater than or equal to 110km/h, the VCU sends a signal to the control module to control the active suspension to adjust the suspension hardness to a 'hard suspension' state, so that the height of the whole vehicle is reduced, the center of gravity is reduced, the stability of the whole vehicle is improved, and the front axle has a lower attitude than the rear axle. The maximum section of the windward side is reduced, the influence of the side wind on the whole vehicle is reduced, and the oil consumption of the whole vehicle is reduced.
If the vehicle speed is judged to be more than or equal to 30km/h and less than 80km/h at the moment, the VCU sends an instruction to the suspension controller to adjust the suspension hardness and the vehicle height to be in a moderate state, the vehicle height sensor, the vehicle-mounted radar and the gyroscope feed back vehicle turning and road surface information to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust.
If the vehicle speed is less than 30km/h at the moment, the VCU sends an instruction to the suspension controller to adjust the suspension hardness and the vehicle height to be in a soft suspension state, the comfort level of a driver is improved, the automobile height sensor, the vehicle-mounted radar and the gyroscope feed back vehicle turning and road surface information to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust.
(2) Uneven road surface:
if the automobile is in an uneven road state, the automobile speed cannot be fast, a gyroscope and a height sensor feed back road signals to a VCU, the VCU sends signals to an active suspension controller, and the controller adjusts the suspension hardness to be in a soft suspension state to meet the requirement that wheels have larger movement space when the automobile runs on the uneven road.
3. When the vehicle speed sensor judges that the vehicle speed is reduced to 0, a parking signal is fed back to the VCU, the VCU judges whether the vehicle is stopped and a parking gear is hung and a hand brake is pulled up, and if not, the original state is continuously kept; if the parking gear is detected to be hung and the hand brake is pulled up, the sensor on the vehicle door can detect whether the vehicle door is opened or not, if the vehicle door is not opened, the VCU sends an instruction to the active suspension controller, the controller controls to reduce the height of the suspension, lowers the posture of the whole vehicle and makes preparations for passengers to get off; if the vehicle door opening signal is detected, the VCU sends an instruction to the active suspension controller, the kneeling direction of the whole vehicle side is selected according to the opening of the vehicle door, and if the two sides are opened simultaneously, the suspension height of the whole vehicle is reduced, so that a vehicle owner presets the getting-off height.
4. When the vehicle is flamed out but the key of the vehicle is detected to be in the vehicle, the power supply of the whole vehicle is not disconnected in a half-hour working mode, the whole vehicle is in a low-attitude state, and the preparation for getting off the vehicle of passengers is made. Principle or process of operation
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The active suspension structure of the automobile comprises a wheel, wherein the wheel is provided with a Macpherson type active suspension consisting of a transverse stabilizer bar and an axle, and is characterized in that an electromagnetic shock absorber is arranged above the Macpherson type active suspension.
2. The active suspension structure of an automobile according to claim 1, wherein the control method specifically comprises:
a parking state: when the circuit of the whole vehicle is connected, the VCU of the vehicle can automatically detect whether the vehicle owner opens the active suspension, if the VCU confirms the opening state can give a signal to the control module of the active suspension, the control module can adjust the height of the vehicle to be a normal state, and the hardness of the suspension is adjusted to be moderate; if the starting state is not determined, the vehicle speed sensor feeds vehicle speed information back to the VCU, the VCU judges whether the vehicle is in the parking state, the vehicle-mounted gyroscope judges whether the position of the vehicle is on a ramp or an uneven road surface, if the vehicle is on a smooth road without a ramp, the VCU sends an instruction to the active suspension control module, and the control module can adjust the suspension state, reduce the suspension height and lower the posture of the whole vehicle; if the gyroscope judges that the automobile is on a ramp or an uneven road surface, the VCU adjusts the state of the suspension according to the finished automobile state fed back by the gyroscope, so that the finished automobile state is in a horizontal state;
the driving state is as follows: the signal transmitted by the vehicle speed sensor is fed back to the VCU, if the VCU judges that the vehicle is in a running state, the automobile height sensor, the vehicle-mounted radar and the gyroscope feed back the information of turning and road surface of the vehicle to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust;
when the vehicle speed sensor judges that the vehicle speed is reduced to 0, a parking signal is fed back to the VCU, the VCU judges whether the vehicle is stopped and a parking gear is hung and a hand brake is pulled up, and if not, the original state is continuously kept; if the vehicle is detected to be hung on a parking gear and the hand brake is pulled up, the sensor on the vehicle door can detect whether the vehicle door is opened or not, if the vehicle door is not opened, the VCU sends an instruction to the active suspension controller, and the controller controls to reduce the height of the suspension, lower the posture of the whole vehicle and make the preparation for passengers to get off; if a vehicle door opening signal is detected, the VCU sends an instruction to the active suspension controller, the kneeling direction of the whole vehicle side is selected according to the opened vehicle door, and if the two sides are opened simultaneously, the suspension height of the whole vehicle is reduced, so that a vehicle owner presets the getting-off height;
when the vehicle is flamed out but the key of the vehicle is detected to be in the vehicle, the power supply of the whole vehicle is not disconnected in a half-hour working mode, the whole vehicle is in a low-attitude state, and the preparation for getting off the vehicle of passengers is made.
3. The active suspension structure of claim 2, wherein the suspension is adjusted in a specific manner according to the driving state:
the road surface is relatively flat:
when the speed fed back by the speed sensor is greater than or equal to 110km/h, the VCU sends a signal to the control module to control the active suspension to adjust the suspension hardness to a 'hard suspension' state so as to reduce the height of the whole vehicle, and the front axle is lower than the rear axle in attitude;
if the vehicle speed is judged to be more than or equal to 30km/h and less than 80km/h at the moment, the VCU sends an instruction to the suspension controller to adjust the suspension hardness and the vehicle height to be in a moderate state, the vehicle height sensor, the vehicle-mounted radar and the gyroscope feed back vehicle turning and road surface information to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust;
if the vehicle speed is less than 30km/h at the moment, the VCU sends an instruction to the suspension controller to adjust the suspension hardness and the vehicle height to be in a soft suspension state, the automobile height sensor, the vehicle-mounted radar and the gyroscope feed back vehicle turning and road surface information to the VCU, and the VCU sends a signal to the active suspension controller to control the corresponding suspension to adjust;
uneven road surface:
if the automobile is in an uneven road state, a gyroscope and a height sensor feed back road signals of a VCU, the VCU sends the signals to an active suspension controller, and the controller adjusts the suspension hardness to be in a soft suspension state so as to meet the requirement that wheels have larger movement space when the automobile runs on the uneven road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210606884.XA CN114771190A (en) | 2022-05-31 | 2022-05-31 | Automobile active suspension structure and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210606884.XA CN114771190A (en) | 2022-05-31 | 2022-05-31 | Automobile active suspension structure and control method thereof |
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| CN114771190A true CN114771190A (en) | 2022-07-22 |
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| CN202210606884.XA Pending CN114771190A (en) | 2022-05-31 | 2022-05-31 | Automobile active suspension structure and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116674333A (en) * | 2023-07-28 | 2023-09-01 | 成都赛力斯科技有限公司 | Active suspension control method, device, computer equipment and storage medium |
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2022
- 2022-05-31 CN CN202210606884.XA patent/CN114771190A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116674333A (en) * | 2023-07-28 | 2023-09-01 | 成都赛力斯科技有限公司 | Active suspension control method, device, computer equipment and storage medium |
| CN116674333B (en) * | 2023-07-28 | 2023-09-29 | 成都赛力斯科技有限公司 | Active suspension control method, device, computer equipment and storage medium |
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