A method for checking status of a vibration damper of a motor vehicle includes selecting a suitable section of a roadway, via processing circuitry at a server, based on section selection criteria comprising a number of passing vehicles, a data input sufficient for correlation analyses of the vibration damper, and homogeneity of the roadway. The method further includes acquiring data from a plurality of other vehicles while the other vehicles are driving through the section, grouping data items from the acquired data that are specifically associated with vibration damper status, classifying the status of the vibration damper based on the data items, and informing the driver about the status of the vibration damper. The data on the number of the other vehicles may include data indicative of other vehicle vibration dampers in new condition defining reference values for a degree of wear of the vibration damper.

Methods and apparatus to adjust vehicle suspension damping are disclosed herein. An example apparatus includes interface circuitry, machine readable instructions, and programmable circuitry to at least one of instantiate or execute the machine readable instructions to determine a terrain condition based on first wheel position data of a vehicle and second wheel position data of the vehicle, determine a damping command based on the terrain condition, and adjust a suspension of the vehicle based on the damping command.

A system for damping control for a vehicle includes a parameter component and a damping adjustment component. The parameter component is configured to determine one or more driving parameters of a vehicle. The one or more driving parameters include a velocity of the vehicle. The damping adjustment component is configured to adjust damping of suspension of the vehicle during driving based on the one or more driving parameters. The damping adjustment component is also configured to adjust damping of suspension at a zero velocity for a threshold time period in response to transitioning from a non-zero velocity to the zero velocity.

Disclosed is a pulling compensation apparatus for a vehicle including: a main body part capable of loading a power engine of the vehicle and goods or carrying people; a transfer part transferring the main body part; a sensor part sensing a height and a slope of the main body part, pulling due to motion inertia and an obstacle to transmit a signal; a controller embedded with a computer receiving the signal of the sensor part; and a pulling reduction part controlled by the controller to reduce the pulling and shocks of the main body part. The pulling reduction part varies the height to reduce the pulling and shocks of the main body part when the pulling of the main body part and the obstacle are sensed by the sensor part.

A suspension system for a land vehicle is provided with at least one actuator connected to a chassis and an axle of a land vehicle spaced apart from a pivotal connection of the axle. A suspension circuit is in cooperation with the at least one actuator. A controller is in operable communication with the suspension circuit and is programmed to receive input indicative of a travel speed of the land vehicle. The suspension circuit is closed at a low speed travel range to permit the axle to pivot in response to variations in an underlying support surface. The suspension circuit is opened to permit selective actuation of the at least one actuator at a higher speed travel range in response to variations in the underlying support surface.

A suspension damping device installed at a chassis of a mobile robot comprises a vehicle frame, a controlling arm set and a damping device. The vehicle frame is fixed to the chassis and arranged on the ground. One end of the controlling arm set is hinged to the vehicle frame, and the other end of the controlling arm set is hinged to a steering device, so the controlling arm set controls the motion stability of the steering device. One end of the damping device opposite to the ground is hinged to the vehicle frame, and the other end of the damping device faced to the ground is hinged to the steering device. A six-wheeled bionic chassis which comprises a chassis frame, a controller, a sensor, front wheel suspension assemblies, middle wheel suspension assemblies and rear wheel suspension assemblies is also disclosed in the present invention.

An inertial regulation method and control system of vehicle active suspension based on a supporting force of each wheel comprises an inner loop control and an outer loop control. The inner loop control is to calculate, according to the dynamics, a theoretical supporting force of each wheel when the vehicle is driving on a virtual slope plane with a 6-dimensional acceleration and a pitch angle measured by an inertial measurement unit; compare the theoretical supporting force with the measured supporting force of each wheel; and control the expansion of each suspension cylinder according to the difference value, so that the supporting force of each wheel changes according to the theoretical supporting force. The outer loop control is to control each suspension cylinder for the same expansion of displacement, so that the average value of all the suspension cylinder strokes tends to a median value.

Methods and apparatus to adjust vehicle suspension damping are disclosed herein. An example apparatus includes memory and at least one processor to execute computer readable instructions to obtain wheel position information and vehicle speed information from sensors associated with wheels of a vehicle, the wheel position information including first wheel position data and second wheel position data, determine a terrain condition based on a greater of the first wheel position data and the second wheel position data, determine a compression damping command based on the terrain condition and the vehicle speed information, and adjust a damping system of the vehicle based on the compression damping command.

A snowmobile including a chassis including a tunnel; a motor; at least one ski; an endless drive track; a rear suspension assembly including: a front suspension arm; a rear suspension arm; a pair of slide rails; a first rear shock absorber connected between the front suspension arm and the slide rails; and a second rear shock absorber connected between the rear suspension arm and the front suspension arm or the slide rails; at least one sensor for sensing an angular position of the front suspension arm or the rear suspension arm relative to one of the tunnel and a component of the rear suspension assembly near at least one of the front suspension arm and the rear suspension arm; and a controller communicatively connected to the sensor to receive electronic signals therefrom representative of the angular position.

An active control system for a mass traveling along a guideway and method for active control of a mass traveling along a guideway. The active control system includes at least one displacement sensor and at least one motion sensor. Signals from the at least one displacement sensor and the least one motion sensor are processed to adjust a displacement of a reference location on the mass from a fixed reference.