130 results about "Active suspension" patented technology

The application provides a vehicle control method and a vehicle, and belongs to the technical field of vehicle control. The vehicle control method comprises the following steps: obtaining a traffic risk level of a road section in front of the vehicle and current state information of the vehicle, and the vehicle is provided with an active suspension; determining a target response strategy based on the traffic risk level and the current state information; and controlling the vehicle to execute the target response strategy, wherein the target response strategy comprises a height adjustment strategy of the active suspension. Thus, different traffic risk levels are divided according to the road conditions of the road section in front of the vehicle, and different target response strategies are provided in combination with the current state information of the vehicle, for example, direct traffic, traffic after height adjustment, or detouring in the case that there is still a risk of scratching after adjustment. Therefore, the vehicle intelligently and objectively controls the corresponding target response strategy based on different traffic risk levels and the current state of the vehicle, timely and effectively prevents scratching during vehicle driving, and improves vehicle safety.

A vehicle stability control method and device, vehicle, equipment and computer readable storage medium. In the method, vehicle operating parameters are obtained, including vehicle steering wheel angle signal, vehicle speed, lateral and longitudinal acceleration signals and yaw rate signal; According to the steering wheel angle signal, lateral and longitudinal acceleration signals and yaw rate signal, the mass center side slip angle offset is obtained; According to the mass center side slip angle offset, lateral and longitudinal acceleration signals and yaw rate signal, the target lateral correction torque is determined; According to the target lateral correction torque, the target active force is determined, and then the target active force is sent to the active suspension, so that the active suspension adjusts the wheel vertical load based on the target active force, which can quickly correct the vehicle driving posture, suppress the instability trend, and effectively improve the vehicle driving stability and safety.

The present application provides a vehicle behavior control system with high practicality. In a vehicle behavior control system having an electric actuator (28) mounted on a vehicle and used to change the attitude of the vehicle, such as a steering system, an active stability system, an active suspension system, etc., a target value (θ * ) of a control object of the electric actuator is determined based on at least one of an attitude (δ) that the vehicle should assume and a factor that changes the attitude of the vehicle, a current (I S ) is supplied to the electric actuator based on the target value, and in a specific condition, a current reduction process is performed to reduce the current supplied to the electric actuator. In the current reduction process, a low-pass filter process (404) performed on the target value, a gain reduction process that reduces the proportional term gain (K P ) and the differential term gain (K D ) in a PID feedback control, etc. can be adopted. Energy saving and power saving of the system are sought.​​​​​​​​

A vehicle may include a chassis and / or vehicle body, a plurality of wheels or wheel assemblies, an active suspension system operatively coupled to the plurality of wheels or wheel assemblies and the chassis and / or vehicle body, and at least one processor configured to control the active suspension system. The at least one processor may be configured to obtain a tuning parameter, determine a first vehicle parameter, determine a second vehicle parameter, determine a blended vehicle parameter based at least partly on the tuning parameter, the first vehicle parameter, and the second vehicle parameter, and command the at least one actuator to apply force between at least one of the plurality of wheels or wheel assemblies and the chassis and / or vehicle body based at least partly on the blended vehicle parameter.

This utility model discloses an active suspension system and a vehicle. The active suspension system includes a connecting assembly and a linear drive assembly. The connecting assembly includes a first connecting portion for connecting to the vehicle's tire assembly. The linear drive assembly is connected to the vehicle body and is capable of driving the connecting assembly to move linearly along a first direction. The linear drive assembly is offset from the first connecting portion in a second direction, and the first and second directions intersect. By offsetting the linear drive assembly from the first connecting portion in the second direction, when there is insufficient space directly above the first connecting portion but space is available in other adjacent locations, the linear drive assembly can be offset to fully utilize that space. This reduces or eliminates the need for customized design costs for the linear drive assembly, allowing the same type of linear drive assembly to be used in more vehicle models, thereby reducing costs.

This invention discloses an active suspension roll control method, system, vehicle, and computer-readable storage medium, belonging to the field of vehicle suspension technology. The active suspension roll control method is applied to a vehicle's active suspension system. The control method includes: acquiring the vehicle's total mass, lateral acceleration, and center of gravity height; calculating the total roll moment using the following formula: M_roll_total = M * Ay * Hei_CoG; where M_roll_total is the total roll moment, M is the vehicle's total mass, Ay is the lateral acceleration, and Hei_CoG is the center of gravity height; and controlling the active suspension system based on the total roll moment. By controlling the active suspension system based on the total roll moment calculated from the lateral acceleration, rather than feedback control based on the error between the target roll angle and the actual roll angle, the problem of robustness being affected by large noise at the actual roll angle is eliminated, making the roll control of the vehicle's active suspension system more stable and reliable.

This application relates to the field of vehicle suspension control technology, and more specifically to a fully active suspension control method, an electronic device and a computer-readable storage medium capable of implementing the method. The method includes: receiving road surface elevation information of the road ahead of the vehicle; filtering the road surface elevation information to obtain a desired vertical motion trajectory of the vehicle body; calculating a feedforward control force for controlling the fully active suspension based on the road surface elevation information and the desired vertical motion trajectory of the vehicle body; detecting the actual vertical motion state of the vehicle body and calculating a feedback control force based on the actual vertical motion state of the vehicle body; and superimposing the feedforward control force and the feedback control force to obtain a total control force, and outputting it to the actuator of the fully active suspension.

A method and system are provided for monitoring operation and predicting service life of an active suspension system or another component or assembly. Sensor data representing operating conditions such as pressure, current, temperature, or actuator position are processed to generate usage indicators derived from binned or weighted values according to a damage function reflecting stress intensity or the frequency of high-load events. Usage indicators may be stored locally or in a cloud-based database and used by a controller to estimate component degradation or remaining service life in real time or retrospectively, and to communicate maintenance recommendations or update reliability models.

The application belongs to the technical field of automobile active suspension damping systems, and relates to a motor pump connecting support, which comprises a support body, the support body comprises a first connecting end connected with a motor pump and a second connecting end connected with a vehicle frame, and the support body is further provided with a fixing mechanism for fixing an oil pipe and a wire harness arranging mechanism for arranging a wire harness. The motor pump connecting support is provided with the fixing mechanism for fixing the oil pipe and the wire harness arranging mechanism for arranging the wire harness, other accessory structures are basically not needed to be added, the oil pipe and the wire harness connected with the motor pump can be effectively positioned and arranged, the oil pipe and the wire harness can be kept in a relatively stable state during vehicle operation, the loosening or interference with other components can be effectively avoided, and the oil pipe and the wire harness can be kept in effective connection with the motor pump.

A method of controlling a robotic cleaning device. The method includes detecting, via one or more sensors, a soiled area in on a target surface for cleaning. The method includes activating an active suspension system to reduce the distance between a chassis of the robotic cleaning device and the target surface, thereby increasing pressure applied by a cleaning pad mounted to the chassis of the robotic cleaning device. The method includes monitoring, via one or more processors, one or more parameters of the robotic cleaning device to determine whether the one or more parameters is outside a threshold parameter range. The method includes adjusting the active suspension system if the one or more parameters is outside the threshold parameter range, and deactivating the active suspension system when the soiled area on the target surface is detected to be cleaned.

The present application relates to the technical field of vehicle engineering, in particular to a kind of active suspension vehicle roll angle measurement and calculation method, by collecting vehicle body roll angular velocity, lateral acceleration and the change of four suspensions' suspension height, and according to lateral acceleration, four suspensions' suspension height change respectively calculates tire deformation and the steady-state roll angle contributed at wheel center, linearly superimposes two steady-state roll angles to obtain the steady-state roll angle of vehicle as a whole, again the vehicle roll angular velocity after filtering is integrated into transient roll angle, finally, the correction degree of steady-state roll angle to transient integral result is adjusted by weight coefficient, and the vehicle roll angle with strong real-time performance and high robustness is fused and calculated, the technical problems that the existing technology exists, such as inaccurate roll angle acquisition, large calculation deviation caused by vehicle load change and suspension nonlinear characteristics, and pure integral calculation prone to drift are solved.

The integrated hydraulic control system of the automobile drive-by-wire chassis comprises a first chassis control system and a second chassis control system, and the first chassis control system and the second chassis control system comprise three subsystems of steering, active suspension and braking; the steering subsystem comprises a steering gear, three-way connections are arranged between left and right steering oil ports of the steering gear and steering high-pressure and low-pressure control valves, the steering high-pressure and low-pressure control valves are connected with oil outlets and inlets of an electric pump through high-pressure and low-pressure oil paths, and the low-pressure oil path is communicated with an oil canister; the active suspension subsystem comprises left and right shock absorbers, three-way connections are arranged between two oil chamber oil ports of the left and right shock absorbers and shock absorption high-pressure and low-pressure control valves, and the shock absorption high-pressure and low-pressure control valves are connected with the high-pressure and low-pressure oil paths respectively; the braking subsystem comprises left and right brakes, three-way connections are arranged between oil chamber oil ports of the left and right brakes and braking high-pressure and low-pressure control valves, and the braking high-pressure and low-pressure control valves are connected with the high-pressure and low-pressure oil paths respectively; the low-pressure and high-pressure oil paths are filled with oil to form a closed circulation oil path.

The application discloses a vehicle welcoming control method, device and equipment and a storage medium, and the method comprises the following steps: in response to the activation of the welcoming mode, the full active suspension and the air spring of the vehicle are cooperatively controlled to adjust the lowering of the vehicle suspension; if it is detected that the vehicle suspension is lowered to a set height, the full active suspension is controlled to stop outputting active force, and the air spring is controlled to continue adjusting alone until the target welcoming height is reached and the adjusting is stopped. In the application, when the full active suspension and the air spring are cooperatively adjusted to a preset difference from the target height, the active force of the hydraulic pump is removed in advance, the remaining adjustment is completed by the air spring alone, the target height is reached after quick response in the welcoming mode, the hydraulic pump is maintained with zero power consumption, energy consumption and noise are significantly reduced, the double-system fault redundancy capability is possessed, and the driving and riding experience and the system reliability are improved.

The present application relates to the technical field of automatic operation for parking, and particularly provides a hill parking parameter acquisition method based on suspension state, a device and a storage medium, which comprises the following steps: collecting a tire parameter group and acquiring tire vertical load based on the tire parameter group; collecting a slope parameter group and acquiring slope based on the slope parameter group; and acquiring the whole vehicle mass based on the slope and the tire vertical load. The present application aims to introduce active suspension state information to correct the estimation of the whole vehicle mass and the slope, so as to optimize the performance of the hill parking auxiliary control. For the whole vehicle mass, the preset parameters are corrected according to the force analysis and calculation of the tires and the whole vehicle. For the slope, the longitudinal acceleration sensor signal is corrected according to the body posture analysis and calculation. The corrected values closer to the actual state will be used for subsequent control, avoiding the risk of hill rolling and the problem of starting drag.

A system and method may release or pick up a collecting body or cleaning pad from a robotic vacuum to selectively mop and / or vacuum a floor surface. A robotic vacuum base may include an attaching element protruding from the robotic vacuum base and a collecting body releasably coupled to the robotic vacuum. The collecting body may have an attaching element recess shaped to engage the attaching element. The attaching element recess may engage the attaching element to secure the collecting body to the robotic vacuum base in a direction of the robotic vacuum away from the robotic vacuum base.

The present application relates to a method and a system for controlling a wheel-side drive torque, a software product, a medium, and a device. The method for controlling a wheel-side drive torque comprises the following steps: determining a road surface condition in front of a vehicle; creating a road surface model based on the road surface condition; calculating the position of a contact point between a target tire and an uneven road surface based on the road surface model; determining a damping force acting on the target tire at this contact point from an active suspension; calculating an adjustment amount for the wheel-side drive torque of the target tire based on the position of the contact point and the damping force; and adjusting the wheel-side drive torque based on the adjustment amount.The method for controlling wheel-side drive torque mitigates vibrations and shock sensations caused by the damping force of the active suspension when the wheel travels over an uneven road surface. This improves the vehicle's NVH performance and provides a more comfortable ride for the occupants.

The application discloses a full magnetic suspension system based on bidirectional active axial force of a rotor and a control method thereof. The full magnetic suspension system is provided with an axial force winding 3, and a magnetic field rotating synchronously with the rotor generated on the winding can generate stable axial forces in two directions of attraction and repulsion to compensate for axial hydraulic force. The size and direction of the active axial force generated on the rotor can be actively controlled through the current on the axial force winding 3. The active Maxwell force and the Lorentz force in the axial direction are active suspension forces, and together with passive magnetic resistance force, form a composite axial suspension force. The application can effectively improve the axial stiffness by increasing the active axial force. The control method provided by the application can make the axial force of the rotor have good dynamic response speed, and has better anti-interference ability compared with passive suspension. The active axial electromagnetic suspension system greatly improves the stability performance of the magnetic suspension pump in the axial direction.

This application discloses a vehicle control method and a vehicle, belonging to the field of active suspension technology. By comprehensively judging the road surface smoothness and road excitation frequency, the operating mode of the active suspension system can be intelligently determined, thereby providing active damping when needed and avoiding the output of active force when it may have negative effects. This comprehensive judgment mechanism based on road surface smoothness and excitation frequency enables the active suspension system to work more intelligently and adaptively. Therefore, the technical solution provided by the embodiments of this application enables the active suspension system to output active force in scenarios where it is truly needed and can effectively function, while actively suppressing it in scenarios that may have the opposite effect, thereby improving the actual performance of the active suspension system and the ride comfort of the vehicle, and avoiding the problem of reverse execution of active force on high-frequency road surfaces in traditional solutions.

A protective shield is provided for a shock absorber valve. The protective shield includes an annular cap having a base, a circumferential body, a plate, and an aperture provided in the cap for coupling an electrical line and connector with a complementary connector provided in shielded relation within the cap. The clamp member is provided along the base of the cap and configured to rigidly affix the cap onto a shock absorber valve mount body.

Aspects of the invention relate to an actuator system for a vehicle suspension system, the actuator system comprising: a first actuator comprising a piston, a first upper fluid chamber and a second lower fluid chamber, the first and second fluid chambers being separated by the piston; a second actuator comprising a piston, a first upper fluid chamber and a second lower fluid chamber, the first and second fluid chambers being separated by the piston; a first hydraulic passage fluidly connecting the first upper fluid chamber of the first actuator with one of the first and second fluid chambers of the second actuator; a second hydraulic passage fluidly connecting the second lower fluid chamber of the first actuator with the other of the first and second fluid chambers of the second actuator; and at least one pump configured to pump fluid between the first and second hydraulic passages.

The application provides an integrated control method for active suspension and differential steering of a distributed drive unmanned vehicle, which realizes trajectory tracking of the unmanned vehicle through differential steering, realizes vehicle body roll during steering through active suspension, improves the speed of the unmanned vehicle during cornering, and improves the steering stability. First, a dynamic model of the unmanned vehicle including differential steering and active suspension is established, a reference model is established to obtain a reference yaw rate and a reference vehicle body roll angle, a single-point preview driver model based on fractional calculus theory is designed to obtain a reference front wheel steering angle required by the reference model, and an H ∞ A robust controller controls the yaw rate and the vehicle body roll angle of the differential steering unmanned vehicle to track the reference values, and differential torques and control forces of left and right active suspensions are obtained. The results show that the integrated control method can make the differential steering unmanned vehicle realize trajectory tracking and vehicle body posture control.

The application discloses an integrated fault diagnosis and estimation method for an electric vehicle active suspension system, and comprises the following steps: firstly, collecting vehicle signal inputs required for control; then, estimating a sensor fault vector through a first unknown input observer, and estimating an actuator fault value through a second unknown input observer; for the coupling problem of the two fault estimations, introducing an actuator temporary shutdown mechanism; through monitoring the suspension dynamic stroke sensor fault estimation value, triggering the actuator shutdown mechanism after exceeding a preset threshold value and lasting for a specific time, so as to identify the fault source; finally, generating a fault flag and masking and correcting the estimation value, and outputting accurate fault estimation. The application solves the problem that the actuator and the sensor fault coupling cannot be diagnosed simultaneously, and realizes the synchronous and accurate diagnosis and estimation of various faults of the electric vehicle active suspension system.

The application provides a vehicle obstacle avoidance control method based on active control of a vehicle body posture and optimization of damping, comprising the following steps: step 1, collecting road environment data of a road where a current vehicle is located in real time, and analyzing the road environment data to obtain real-time road conditions; step 2, planning a safe obstacle avoidance path according to the real-time road conditions, determining a target vehicle body posture trajectory based on the safe obstacle avoidance path, and adaptively matching optimal damping parameters of a semi-active suspension according to the target vehicle body posture trajectory; and step 3, constructing a posture-damping cooperative obstacle avoidance strategy according to the adaptive matching result, and controlling the vehicle to perform an obstacle avoidance operation according to the posture-damping cooperative obstacle avoidance strategy. The optimal distribution of damping force is directly and intelligently driven, so that the intelligence, stability and safety of the controlled vehicle in obstacle avoidance are greatly improved.