A damping control apparatus has a control unit that controls an active actuator that generates a control force for damping a sprung, and the control unit determines a predicted wheel passage position where a wheel is predicted to pass, performs a high-pass filtering on a first road surface displacement-related value, performs a low-pass filtering on a second road surface displacement-related value, calculates a target control force for damping the sprung when the wheel passes through the predicted wheel passage position based on a sum of the first road surface displacement-related value after high-pass filtering and the second road surface displacement-related value after low-pass filtering, and the second road surface displacement-related value has a higher possibility that a position where a control force corresponding to the target control force is generated misaligns with the predicted wheel passage position as compared with the first road surface displacement-related value.

A damping control device for a vehicle includes a control force generating device configured to generate vertical control force between a vehicle body of the vehicle and at least one wheel suspended from the vehicle body by a suspension, and an electronic control unit configured to reduce, by controlling the control force generating device to change the control force, vibration of the vehicle body that is caused by vertical vibration occurring in the wheel in response to vertical road surface displacements while the vehicle is traveling, the vertical vibration being transmitted to the vibration of the vehicle body via the suspension.

A damping control device includes a control force generating device and a controller. The controller is configured to acquire road surface displacement related values related to a plurality of road surface displacements in a predetermined sampling zone, acquire an amplitude index indicating a magnitude of an amplitude of the sampled values, determine an operation delay period of the control force generating device based on the magnitude of the amplitude indicated by the amplitude index, calculate target control force for reducing vibration of a vehicle body based on the road surface displacement related values at a predicted passing position where a wheel is predicted to pass after an elapse of the operation delay period from a current time, and transmit, to the control force generating device, a control command for causing the control force generating device to regulate the control force to agree with the target control force.

The present disclosure discusses a method of operating a vehicle having a set of tires and an active suspension system. The method includes operating the vehicle to travel along a road surface, sensing, using a smart tire assembly, a magnitude of one or more physical quantities associated with at least one tire of the set of tires, and controlling the active suspension system of the vehicle based at least in part on the magnitude of the sensed one or more physical quantities.

A damping control apparatus has a control unit that controls an active actuator that generates a control force to damp a sprung, and a storage device for storing a unsprung displacement acquired based on a vertical motion state quantity of a vehicle when the vehicle travels, and the control unit determines a predicted wheel passage position where a wheel is predicted to pass, calculates a time derivative value of an unsprung displacement at the predicted wheel passage position acquired by a preview sensor, calculates a target control force based on a sum of a first control component proportional to the time derivative value and a second control component proportional to an unsprung displacement at the predicted wheel passage position acquired from the storage device, and controls a control force generating device so that a control force when the wheel passes the predicted wheel passage position becomes the target control force.

A control unit is configured to execute vibration suppression control, in which the control force generation device is controlled based on a target vibration suppression control force when a wheel passes through a predicted wheel passage position, and roll control, in which the control force generation device is controlled based on a target roll control force for reducing roll of the sprung portion based on a roll index value. When the vibration suppression control and the roll control are executed concurrently, the control force generation device is controlled based on the target vibration suppression control force and the target roll control force obtained after at least one of a reduction correction for the target vibration suppression control force and an increase correction for the target roll control force is performed.

A damping control device for a vehicle calculates a weighted sum of a first control force of feedforward control and a second control force of feedback control as a target value of a damping control force. When a degree of a deviation of a path of a rear wheel from a path of a front wheel is larger than a predetermined first degree, the damping control device sets a weight for the second control force to be larger than a weight for the first control force in the weighted sum.

A wireless active suspension system is disclosed. The system includes at least one sensor mounted to an unsprung mass of a vehicle, the sensor having a low power wireless communication capability, the at least one sensor to send a sensor data transmission. The system also includes a controller in wireless communication with the at least one sensor, wherein the controller receives the sensor data from the at least one sensor and communicates an adjustment command to modify at least one damping characteristic of at least one damper.

The present invention relates to a control unit for determining a value indicative of a load bearing capability of a ground segment supporting a vehicle. The control unit is configured to issue a control signal to the vehicle to thereby impart a motion change of the vehicle, and receive response information from the vehicle indicative of the vehicle's response to the imparted motion change. The control unit is further configured to, based on the response information, determine a vertical position change of at least one wheel of the vehicle, and based on the determined vertical position change and the imparted motion change, determine the value indicative of the load bearing capability of the ground segment.

This application provides a vehicle and a control method for a vehicle suspension. The vehicle includes a first component, a second component, and a vehicle suspension. The vehicle suspension is located between the first component and the second component. The first component is a component that the vehicle suspension bears, the second component is configured to bear the vehicle suspension and the first component, and the vehicle suspension includes a variable damper connected between the first component and the second component. The variable damper is configured to provide a first force to the first component based on a first acceleration of the first component, to control a displacement of the first component relative to the second component in a height direction of the vehicle. In the embodiments of this application, bumps in a driving process of the vehicle can be effectively reduced, so that vehicle ride comfort is improved.