A gyroscope-based rotation damper for a motor vehicle, includes a flywheel that is driven via a drive, rotates around an axis of rotation at an angular velocity (.sub.), the flywheel being mounted in a gimbal on the motor vehicle structure by way of a first bearing element and a second bearing element. The flywheel is mounted rotatably around the angle of rotation () at the first bearing element, and the first bearing element is rotatably mounted at the second bearing element around a first angle of rotation () around a first axis aligned orthogonal to the axis of rotation of the flywheel, and the second bearing element is mounted rotatably around a second angle of rotation () around a second axis aligned orthogonal to the first axis, as well as a controller unit for controlling a shaft drive.

A gyroscope-based rotation damper for a motor vehicle, includes a flywheel that is driven via a drive, rotates around an axis of rotation at an angular velocity (.sub.), the flywheel being mounted in a gimbal on the motor vehicle structure by way of a first bearing element and a second bearing element. The flywheel is mounted rotatably around the angle of rotation () at the first bearing element, and the first bearing element is rotatably mounted at the second bearing element around a first angle of rotation () around a first axis aligned orthogonal to the axis of rotation of the flywheel, and the second bearing element is mounted rotatably around a second angle of rotation () around a second axis aligned orthogonal to the first axis, as well as a controller unit for controlling a shaft drive.

A machine comprises a frame, a plurality of ground engaging units, a plurality of moveable legs, and a hydraulic system. A first ground engaging unit and a second ground engaging unit connect a first leg and a second leg, respectively, with the frame. The hydraulic system controls heights of the plurality of moveable legs. The hydraulic system comprises a fluid circuit to control fluid between the first and second legs, a load holding valve to control fluid flow into the fluid circuit, and first and second relief valves to control flow of fluid between the first and second legs in opposite directions. A method for controlling slope of a construction machine comprises activating a relief valve connecting right and left lifting cylinders to control flow of hydraulic fluid between the lifting cylinders to control retraction of one of the lifting cylinders from retracting.

An in-vehicle stable platform system employing active suspension and a control method thereof is provided. The system includes a vehicle body, an in-vehicle stable platform, an inertial measurement device, an electronic control device, a servo controller set, multiple wheels, and suspension servo actuation cylinders and displacement sensors respectively corresponding to the wheels. The wheels are divided into three groups, which form three support points. The heights of the three support points are controlled to control orientation of the vehicle body. An amount of extension/retraction of the suspension servo actuation cylinders required to cause the in-vehicle stable platform to return to a horizontal level is calculated according to a measured pitch angle and a roll angle of the in-vehicle stable platform, and when a vehicle travels on an uneven road, the extension/retraction of each suspension servo actuation cylinder is controlled to cause the in-vehicle stable platform to be horizontal.

A method for controlling a rotation damper operating according to the gyroscopic principle for a motor vehicle, wherein the rotation damper includes a flywheel, which is driven by a drive and rotating about a rotation axis with an angular velocity .sub., which is cardanically mounted via a first bearing element and via a second bearing element, wherein the flywheel is rotatably mounted on a first bearing element and at a rotation angle , and the first bearing element is rotatably mounted on a second bearing means about a first axis that is oriented orthogonally to the rotation axis of the flywheel, and the second bearing element is rotatably mounted at a second rotational angle ().

A method for controlling a rotation damper operating according to the gyroscopic principle for a motor vehicle, wherein the rotation damper includes a flywheel, which is driven by a drive and rotating about a rotation axis with an angular velocity .sub., which is cardanically mounted via a first bearing element and via a second bearing element, wherein the flywheel is rotatably mounted on a first bearing element and at a rotation angle , and the first bearing element is rotatably mounted on a second bearing means about a first axis that is oriented orthogonally to the rotation axis of the flywheel, and the second bearing element is rotatably mounted at a second rotational angle ().

Some embodiments may provide a method for a desired operating environment. A signal to place a vehicle in a designated mode corresponding to a desired operating environment may be received. The designated mode may include modifications to one or more default operating characteristics of the vehicle. The modifications may be while the vehicle is in parked mode and a vehicle access key associated with the vehicle is within proximity of the vehicle. In response to receiving the signal, characteristics of the vehicle to be modified in order to create the desired operating environment may be identified. The default operating characteristics may relate to lighting or displays controlled by the vehicle, sounds controlled by the vehicle, or a passive entry system of the vehicle. One or more settings of the vehicle to change the default operating characteristics of the vehicle while in the designated mode may be modified.

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.

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.

A plurality of traveling wheels are supported via expandable/contractible tubular support members to a vehicle body frame. A hydraulic operation type vehicle height adjustment mechanism is provided for each one of the traveling wheels, the vehicle height adjustment mechanism being capable of switching a relative height of the traveling wheel relative to the vehicle body frame within a predetermined length range by expanding/contracting the support member by a hydraulic cylinder. There are provided a hydraulic control valve capable of controlling feeding state of work oil to each one of the plurality of hydraulic cylinders, a controlling section for controlling an operation of the hydraulic control valve to bring the vehicle body to a target state via vehicle height adjustment by the hydraulic cylinder in response to a change in the posture of the vehicle body and a plurality of accumulators connected oil chambers of the respective plurality of hydraulic cylinders.