An apparatus for adjusting a vehicle height, the apparatus including a cylinder coupled to a suspension arm and having a pressure chamber therein, a hollow cylinder cap coupled to the cylinder, a first piston disposed to be movable upward or downward in the pressure chamber and having a lifting hole portion penetratively formed, a second piston disposed to be movable upward or downward in the lifting hole portion and having an upper portion to which a leaf spring seating part on which a leaf spring is seated is coupled, and a height adjustment unit connected to the cylinder and configured to selectively adjust a height of at least any one of the first piston and the second piston by changing a pressure of a working fluid in the pressure chamber.

A suspension system may include a pneumatic spring at each wheel of a vehicle. The suspension system may be configured to determine and achieve a pressure set point in each of the pneumatic springs and a target ride height at each wheel of the vehicle. The pressure set point may be determined based on a load at each of the wheels and the center of gravity of the vehicle, such that upon reaching the pressure set point at each in each of the pneumatic springs, a target load and target ride height may be achieved at each of the wheels of the vehicle. The system may also be used to level the ride height of the vehicle and/or achieve a desired orientation.

A system for controlling the stability of a vehicle equipped with semi-active dampers includes: an actuator, a plurality of sensors, a low-level control unit, a high-level control unit and a mid-level control unit adapted to execute an algorithm for calculating a damping level (C.sub.ref).

A suspension apparatus includes a main body; a first arm configured to support a wheel with respect to the main body; a second arm spaced apart from the first arm and including a guide rail; a shock absorber disposed between the second arm and the main body; a first support member disposed on one side of the shock absorber and rotatably connected to the main body; a second support member disposed on another side of the shock absorber and seated on the guide rail; and a height of the main body is adjusted by movement of the second support member along the guide rail.

A vehicle-mounted motion simulation platform based on active suspension and a control method thereof is provided. The vehicle-mounted motion simulation platform includes a vehicle body, a motion simulation platform fixedly connected to the vehicle body, an upper computer for posture control, a gyroscope, a plurality of wheels, and suspension servo actuating cylinders and displacement sensors corresponding to the wheels respectively, an electronic control unit, and a servo controller group. The electronic control unit calculates posture control parameters based on the posture instructions of the motion simulation platform input by the upper computer for posture control and posture information of the motion simulation platform measured by the gyroscope, and then outputs the posture control parameters to the servo controller group. The servo controller group controls extension of the respective suspension servo actuating cylinders according to the posture control parameters to realize follow-up control over the posture of the motion simulation platform.

A personal mobility and a control method are provided. The personal mobility includes: a main body; a front wheel mounted on the front end of the main body; a pair of rear wheels mounted on the rear end of the main body; an actuator configured to adjust a distance between the pair of rear wheels; an image data device mounted on the personal mobility and having a field of view outside of the personal mobility, the image data device configured to acquire image data; and a controller configured to determine at least one of user state information or external environment information based on the image data, and control the actuator to adjust the distance between the pair of rear wheels based on at least one of the user state information or the external environment information.

A vehicle crane having a hydropneumatic suspension and a braking system including wheel brakes and a first braking circuit assigned to the wheel brakes of at least one vehicle axle and a second braking circuit assigned to the wheel brakes of at least one other vehicle axle. In order to adapt the actuation of the braking system to the weight state, the hydropneumatic suspension is coupled to an automatically load-dependent braking force regulator that is operatively connected to one of the braking circuits or to one of their braking circuit sections such that, on the basis of a weight state signal of the vehicle crane generated from the hydropneumatic suspension, a braking pressure generated inside the braking circuit or braking circuit section coupled to the automatically load-dependent braking force regulator, can be varied with respect to a braking pressure generated simultaneously inside the other braking circuit or braking circuit section.

A row unit has a frame with an upper portion and a lower portion. The upper portion has a parallel linkage and the lower portion is coupled to plural gauge wheels. A first sensor is configured to provide an output signal and a controllable device is coupled to the upper portion and configured to provide an adjustable down force. A dampening device is coupled to the upper portion and configured to provide adjustable dampening of the row unit based on the output signal.

A milling machine may have a frame, a milling drum attached to the frame, and ground engaging tracks that support the frame and propel the milling machine in a forward or rearward direction. The milling machine may have height adjustable actuators connecting the frame to the tracks. Each actuator may have a cylinder attached to the frame, a piston slidably disposed within the cylinder, and a rod connected at a first end to the piston and connected to a track at a second end. The milling machine may have a tank storing hydraulic fluid and a fluid conduit connecting the tank to the cylinder. The milling machine may have a control valve selectively controlling a flow rate of the hydraulic fluid in the fluid conduit. The milling machine may also have a controller that determines a height of the frame relative to the ground surface based on the flow rate.

A movable object such as a mobile robot is designed to be driven indoors or outdoors with improved stability. Stability is enhanced by an attitude control mechanism to improve attitude stability of the movable object in a direction perpendicular to a driving direction thereof. The movable object includes an attitude control motor including a connecting shaft having a first end connected to a body part and a second end connected to a wheel, wherein the second end of the connecting shaft is located higher or lower than the first end of the connecting shaft.