In some embodiments, an electric motor may include a plurality of magnetic circuit modules, where each magnetic circuit module includes a rotor having a first magnetic array and a second magnetic array extending substantially parallel with one another and spaced apart by a channel. The electric motor may further include a stator including a coil assembly configured to fit within the channel and to provide an electromagnetic force within the channel to accelerate the magnetic arrays.

In an air suspension system, starting of a compressor is facilitated in a condition in which there exists a pressure difference. There is provided an air suspension system in which air compressed by a compressor is supplied to a plurality of air chambers provided between a vehicle body side and a wheel side and configured to perform vehicle height adjustment in accordance with the supply and discharge of air. The compressor has a needle connected to a piston and extending in a moving direction of the piston, and an armature reciprocating the needle in the moving direction of the piston.

An electromagnetic suspension device includes: an electromagnetic actuator that generates a driving force related to vibration damping of a vehicle body by an electric motor; a rotational angle acquisition unit that acquires a rotational angle of the electric motor; a rotational angle acceleration calculation unit that calculates a rotational angle acceleration of the electric motor based on the rotational angle; ECU that performs driving force control including inertia compensation control of the electromagnetic actuator based on the rotational angle acceleration; and a relative speed calculation unit that acquires a relative speed between above- and below-spring members. In an area in which a relative speed exceeds a predetermined relative speed threshold, the ECU corrects an amount of inertia compensation so that the amount of inertia compensation is decreased, as compared with an area in which a relative speed value is the relative speed threshold or less.

An electromagnetic suspension device includes: an electromagnetic actuator which is disposed side by side with a spring member provided between a body and a wheel of a vehicle and which produces a driving force for damping operation and extending and contracting operation; an information acquisition unit which acquires the stroke position of the electromagnetic actuator; and an ECU which sets a target damping force and a target stretching force and controls a driving force of the electromagnetic actuator by using a target driving force based on the set target damping force and target stretching force. When the stroke position acquired by the information acquisition unit is in an end region close to a stroke end, the ECU corrects the target driving force such that the stroke position shifts from the end region toward a neutral region.

A suspension control system and a method for controlling a damper device of a bicycle include a damper device and a spring device for sprung damping of a relative motion between a first and a second component of the bicycle. The suspension device has a spring unit exhibiting a spring characteristic, and the damper device exhibits a damping characteristic. The spring characteristic of the spring unit is changed under the control of an electrically operated actuator, which in turn is controlled via an electric control device.

A compressed air supply installation for operating an air suspension installation of a vehicle includes an air supply unit configured to supply air, an air compression unit configured to compress air, a bleeding line, and a compressed air supply line. The bleeding line includes a bleeding valve arrangement in the form of a controllable solenoid valve arrangement comprising a magnetic part and a pneumatic part actuatable directly via the magnetic part, and a bleeding port for bleeding air. The compressed air supply line includes an air dryer, and a compressed air port for supplying the pneumatic installation with compressed air. The pneumatic part is open in an unactivated state of the magnetic part of the solenoid valve arrangement. The pneumatic part is open in a branch line of the compressed air supply line between a pressure-side valve port and a control-side valve port of the branch line.

A method for operating a damper valve in order to control a damper force of a damper in an active chassis of a vehicle, wherein the damper valve includes a pilot valve for controlling a main spool. The method includes determining a target pressure necessary for a target damper force, in a first damper chamber of the damper; determining a valve flow through a damper valve inlet of the damper valve on the basis of a damper flow, generated by a damper movement, from the first damper chamber and on the basis of a measured pump flow of a pump; determining a main spool opening distance in such a way that, with an applied main spool flow through the main spool opening distance, the target pressure is present as the back pressure in the first damper chamber.

A suspension system comprises first and second dampers including first and second compression and rebound chambers. A first hydraulic circuit includes a first hydraulic line fluidly connecting the first rebound chamber of the first damper and the second compression chamber of the second damper. A second hydraulic circuit includes a second hydraulic line fluidly connecting the first compression chamber of the first damper and the second rebound chamber of the second damper. A proportional pressure accumulator in fluid communication with at least one of the first and second hydraulic circuits includes an accumulation chamber, a pressurized gas chamber and a volume varying mechanism. The volume varying mechanism selectively varying a volume of the pressurized gas chamber to vary a pressure within the pressurized gas chamber and change a fluid pressure within at least one of the first and second hydraulic circuits.

A suspension includes inner magnets coupled to an inner cylindrical member and outer magnets coupled to an outer cylindrical member that circumscribes the inner cylindrical member. The inner magnets are stacked on top of one another in an axial direction and include a first set having a first polarity alternately arrayed with a second set having a second polarity. The outer magnets are stacked on top of one another in the axial direction and include a first set having the first polarity alternately arrayed with a second set having the second polarity. Each inner magnet in the first set is radially aligned with an outer magnet in the second set and each inner magnet in the second set is radially aligned with an outer magnet in the first set to provide an attractive electromagnetic field between the magnets that passively absorbs axial displacement between the inner and outer cylindrical members.

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper.