Abstract: An electric suspension control, in a vehicle including an electric suspension apparatus driven with a motor, short-circuits the motor and limits a vehicle speed to a predetermined speed or less, in a case where an abnormality occurs in the electric suspension apparatus.

Abstract: Included are an electromagnetic actuator which includes an electric motor configured to generate drive forces for a damping operation and a telescopic operation; an information acquirer which acquires a stroke velocity of the electromagnetic actuator; a drive force arithmetic part which includes a damping force calculator configured to calculate a target damping force and a telescopic force calculator configured to calculate a target telescopic force, and which obtains a target drive force based on the target damping force and the target telescopic force; and a drive controller which controls drive of the electric motor using the target drive force. The drive force arithmetic part includes an adjuster which performs an adjustment to reduce a telescopic control amount for the target telescopic force based on the stroke velocity acquired by the information acquirer.

Abstract: An electric suspension apparatus includes electric actuators provided for a plurality of wheels, respectively, an acceleration sensor disposed in each of the electric actuators, the acceleration sensor detecting a first acceleration, and an electric suspension control ECU controlling each of the electric actuators based on the first acceleration, and the electric suspension control ECU decreases a control amount to the electric actuator, in a case where a first speed based on the first acceleration in an up-down direction is equal to or less than a predetermined speed.

Abstract: An electric suspension apparatus includes electric actuators provided for a plurality of wheels, respectively, an acceleration sensor disposed in each of the electric actuators, the acceleration sensor detecting a first acceleration, and an electric suspension control ECU controlling each of the electric actuators based on the first acceleration, and the electric suspension control ECU decreases a control amount to the electric actuator, in a case where a first speed based on the first acceleration in an up-down direction is equal to or less than a predetermined speed.

Abstract: An electric suspension control, in a vehicle including an electric suspension apparatus driven with a motor, short-circuits the motor and limits a vehicle speed to a predetermined speed or less, in a case where an abnormality occurs in the electric suspension apparatus.

Abstract: An electric suspension device, includes: an electromagnetic actuator which is arranged in parallel to a spring member provided between an unsprung member and a sprung member and produces a drive force; an information acquisition section which acquires acceleration information of the unsprung member and sprung member along the expansion-contraction axis; a damping force calculation section which calculates a target damping force; and a drive controller which performs drive control for the electromagnetic actuator using a target drive force based on the target damping force. The information acquisition section acquires a road profile signal based on the acceleration information concerning the front-wheel side.

Abstract: The electromagnetic suspension apparatus includes: an electromagnetic actuator provided in parallel with a spring member between a vehicle body and a wheel of a vehicle and configured to generate driving force involving vibration damping of the vehicle body; an information acquisition unit configured to acquire, through a high-pass filter, time-series information about a stroke position of the electromagnetic actuator; and an ECU configured to calculate target driving force of the electromagnetic actuator and use the calculated target driving force to execute driving force control of the electromagnetic actuator.

Abstract: An electric suspension device, includes: an electromagnetic actuator which is arranged in parallel to a spring member provided between an unsprung member and a sprung member and produces a drive force; an information acquisition section which acquires acceleration information of the unsprung member and sprung member along the expansion-contraction axis; a damping force calculation section which calculates a target damping force; and a drive controller which performs drive control for the electromagnetic actuator using a target drive force based on the target damping force. The information acquisition section acquires a road profile signal based on the acceleration information concerning the front-wheel side.

Abstract: An electric suspension device, includes: an electromagnetic actuator which is arranged in parallel to a spring member provided between a body and a wheel of a vehicle and produces a drive force concerning damping operation and expansion-contraction operation; an information acquisition section which acquires roll velocity of the vehicle; a damping force calculation section which calculates a target damping force as a target value for the damping operation of the electromagnetic actuator; and an ECU which performs drive control for the electromagnetic actuator using a target drive force based on the calculated target damping force.

Abstract: Included are an electromagnetic actuator which includes an electric motor configured to generate drive forces for a damping operation and a telescopic operation; an information acquirer which acquires a stroke velocity of the electromagnetic actuator; a drive force arithmetic part which includes a damping force calculator configured to calculate a target damping force and a telescopic force calculator configured to calculate a target telescopic force, and which obtains a target drive force based on the target damping force and the target telescopic force; and a drive controller which controls drive of the electric motor using the target drive force. The drive force arithmetic part includes an adjuster which performs an adjustment to reduce a telescopic control amount for the target telescopic force based on the stroke velocity acquired by the information acquirer.

Abstract: 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.

Abstract: Provided is an electromagnetic suspension apparatus capable of achieving both of vibration isolation performance and road holding performance. The electromagnetic suspension apparatus includes an electromagnetic actuator, an information acquisition unit that acquires information on a stroke speed of the electromagnetic actuator and a state quantity of the vehicle, a plurality of filters in which individual gain characteristics are respectively set, a filter setting unit that selectively sets a filter having a gain characteristic suitable for the state quantity of the vehicle from among the plurality of filters, a filter processing unit that performs a filtering process on a stroke speed signal using the filter set by the filter setting unit, and a drive control unit that controls driving of the electromagnetic actuator based on relationship information between the stroke speed after the filtering process and a damping force corresponding to the stroke speed.

Abstract: An object of the present invention is to obtain an electromagnetic suspension apparatus capable of meeting a request to improve ride comfort irrespective of a magnitude of a spring constant preset in a spring member. The electromagnetic suspension apparatus includes an electromagnetic actuator that generates a driving force related to vibration damping of the vehicle body, an information acquisition unit that acquires information on a stroke position of the electromagnetic actuator, and an ECU that calculates a target driving force of the electromagnetic actuator and controls a driving force of the electromagnetic actuator using the calculated target driving force. When the stroke position acquired by the information acquisition unit is in a neutral range including a neutral position, the ECU corrects the target driving force so as to reduce a spring force related to the spring member as compared with when the stroke position is in a non-neutral range.

Abstract: A suspension system includes: an electromagnetic damper 2 that is provided between a vehicle body B which is a sprung member of a vehicle and a tire T which is an unsprung member of the vehicle, and applies a damping force and a drive force in a stroke direction to the vehicle body B and the tire T by a motor; an unsprung member acceleration sensor that detects unsprung member acceleration in the stroke direction of the tire; and an ECU that controls the motor. The ECU controls the motor to generate a load Fm in such a direction that increases the relative velocity of the vehicle body B with respect to the tire T and of an amount corresponding to the unsprung member acceleration.

Abstract: The electromagnetic suspension apparatus includes: an electromagnetic actuator provided in parallel with a spring member between a vehicle body and a wheel of a vehicle and configured to generate driving force involving vibration damping of the vehicle body; an information acquisition unit configured to acquire, through a high-pass filter, time-series information about a stroke position of the electromagnetic actuator; and an ECU configured to calculate target driving force of the electromagnetic actuator and use the calculated target driving force to execute driving force control of the electromagnetic actuator.

Abstract: An object of the present invention is to obtain an electromagnetic suspension apparatus capable of quickly reducing an influence of a mechanical frictional force generated in each part of an electromagnetic actuator. The electromagnetic suspension apparatus includes an electromagnetic actuator that generates a driving force related to a damping operation and an expansion and contraction, an information acquisition unit that acquires vehicle state information including a stroke speed of the electromagnetic actuator, an equivalent frictional force calculation unit that calculates an equivalent frictional force of the electromagnetic actuator based on the vehicle state information, and an ECU that calculates a target driving force of the electromagnetic actuator and controls the driving force of the electromagnetic actuator using the calculated target driving force. The ECU corrects the target driving force based on the equivalent frictional force calculated by the equivalent frictional force calculation unit.

Abstract: A vehicle suspension system (3) is provided that allows attention eliciting information such as rumble strips, bumps and road markers to be conveyed to the vehicle operator substantially without detracting from the performance of the vehicle suspension system. A control unit (10) determines if a prescribed warning condition exists according to vehicle information and/or road surface information acquired by an information acquiring unit, and performs a warning control including an extending and retracting movement of the actuator interposed between an sprung member (8) and an unsprung member (9) of the vehicle at a prescribed frequency when the warning condition is determined.

Abstract: A vehicle suspension system (3) includes an electromagnetic damper (7) provided with a sprung member (8) and an unsprung member (9) to apply a drive force and a damping force between the sprung member and the unsprung member, and a control unit (10) for controlling the electromagnetic damper. A target load for the electromagnetic damper is determined based on the unsprung member demand load that attenuates a vertical vibration of the unsprung member, and the sprung member demand load that restrains a vertical displacement of the sprung member. An absolute value of the sprung member demand load is reduced when a sprung member frequency is in an unsprung member resonance frequency range.

Abstract: A relative velocity between a sprung mass and an unsprung mass of a vehicle is calculated by differentiating a stroke amount of an electromagnetic damper with respect to time. The relative velocity is compared with a predetermined value that is set in advance, and a determination is made whether or not the relative velocity is the predetermined value or higher. In a case where the relative velocity is lower than the predetermined value (relative velocity<predetermined value), a normal filter is selected, and a gain G of only an unsprung resonance frequency range is increased. On the other hand, in a case where the relative velocity is the predetermined value or higher (relative velocity?predetermined value), a delay inhibition filter is selected, and a gain of a high frequency range is increased compared to the normal filter.

Abstract: An object of the present invention is to obtain an electromagnetic suspension apparatus capable of quickly reducing an influence of a mechanical frictional force generated in each part of an electromagnetic actuator. The electromagnetic suspension apparatus includes an electromagnetic actuator that generates a driving force related to a damping operation and an expansion and contraction, an information acquisition unit that acquires vehicle state information including a stroke speed of the electromagnetic actuator, an equivalent frictional force calculation unit that calculates an equivalent frictional force of the electromagnetic actuator based on the vehicle state information, and an ECU that calculates a target driving force of the electromagnetic actuator and controls the driving force of the electromagnetic actuator using the calculated target driving force. The ECU corrects the target driving force based on the equivalent frictional force calculated by the equivalent frictional force calculation unit.