Abstract: A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.

Abstract: A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.

Abstract: A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.

Abstract: A vacuum processing apparatus includes a vacuum chamber capable of keeping a first pressure lower than an atmospheric pressure, a driving source disposed in the vacuum chamber, an electric power supply mechanism including a primary side mechanism disposed outside the vacuum chamber for supplying electric power to the driving source and a secondary side mechanism disposed in the vacuum chamber for receiving the electric power from the primary side mechanism in a contactless relationship, and a vessel capable of accommodating airtightly the secondary side mechanism under a second pressure higher than the first pressure.

Abstract: [Object] To predetermine a target vibration level and keep vibration generated at a position at which vibration is to be controlled equal to or smaller than a target vibration level.

Abstract: The present invention provides a vibration damping device which can enhance a vibration damping effect even in a case where a vibration damping target position and a vibration damping force generation position are different from each other.

Abstract: An automobile vibration damping device for an automobile in which a power plant in which an engine, a transmission and the like are combined is supported by a vehicle body, including a vibrating means that generates vibration separate from vibration of the engine. Thereby, it is possible to reduce the vibration amplitude of a seat portion by the reaction force of the vibrating means. Also, if the vibration mode of the vehicle body is adjusted so as to become a node in the vicinity of the seat portion, the vibration amplitude decreases in the vicinity of the seat portion, and improves riding comfort.

Abstract: A vacuum processing apparatus includes a vacuum chamber capable of keeping a first pressure lower than an atmospheric pressure, a driving source disposed in the vacuum chamber, an electric power supply mechanism including a primary side mechanism disposed outside the vacuum chamber for supplying electric power to the driving source and a secondary side mechanism disposed in the vacuum chamber for receiving the electric power from the primary side mechanism in a contactless relationship, and a vessel capable of accommodating airtightly the secondary side mechanism under a second pressure higher than the first pressure.

Abstract: A piezoelectric driven type vibratory feeder having a working mass member that vibrates stably over an entire area of the working mass member is disclosed. The piezoelectric driven type vibratory feeder includes a base, a plurality of first plate springs, with a lower end portion of each of the plurality of first plate springs being secured to the base. A working mass member connected to an upper end portion of each of the plurality of first plate springs and supported at the base to enable the working mass member to vibrate. The piezoelectric feeder also includes a plurality of second plate springs, a piezoelectric device bonded to at least one surface of each of the plurality of second plate springs. An alternating voltage is applied to each piezoelectric device whereby each second plate spring undergoes bending vibration and causes the working mass member to vibrate so that an object is transported on the working mass member.

Abstract: A piezoelectric driven type vibratory feeder having a working mass member that vibrates stably over an entire area of the working mass member is disclosed. The piezoelectric driven type vibratory feeder includes a base, a plurality of first plate springs, with a lower end portion of each of the plurality of first plate springs being secured to the base. A working mass member connected to an upper end portion of each of the plurality of first plate springs and supported at the base to enable the working mass member to vibrate. The piezoelectric feeder also includes a plurality of second plate springs, a piezoelectric device bonded to at least one surface of each of the plurality of second plate springs. An alternating voltage is applied to each piezoelectric device whereby each second plate spring undergoes bending vibration and causes the working mass member to vibrate so that an object is transported on the working mass member.

Abstract: The present invention relates to an apparatus for controlling vibration of steel sheet being processed in a processing line. The apparatus includes: electromagnet devices for generating magnetic forces acting at right angles on the steel sheet; sensor devices for detecting separation distances between the steel sheet and the electromagnet devices; control devices for controlling a flow of excitation current through the electromagnet devices according to separation distances detected by the sensor devices; and actuator devices for adjusting the separation distance between the steel sheet and the electromagnet devices; wherein the actuator devices adjust the separation distance when a specific condition is attained in a positional relationship between the steel sheet and the electromagnet devices.

Abstract: In a vibratory conveyor which includes a trough for transporting objects, an exciting mechanism for vibrating the trough in a horizontal direction and a supporting mechanism for supporting the trough so as to be vibratile in the horizontal direction, the exciting mechanism is a linear motor, one of the primary and secondary sides of the linear motor is fixed to the trough and the other is facing to the one side with a predetermined gap and so arranged as to be vibratile relative to the one side.

Abstract: In a vibratory conveyor which includes a trough for transporting objects, exciting mechanism for vibrating the trough in a horizontal direction and supporting mechanism for supporting the trough so as to be vibratile in the horizontal direction, the exciting mechanism is a linear motor, one of the primary and secondary sides of the linear motor is fixed to the trough and the other is facing to the one with a predetermined gap and so arranged as to be vibratile relative to the one.

Abstract: In a vibratory conveyor which includes a trough for transporting objects, an exciting mechanism for vibrating the trough in a horizontal direction and a supporting mechanism for supporting the trough so as to be vibratile in the horizontal direction, the exciting mechanism is a linear motor, one of the primary and secondary sides of the linear motor is fixed to the trough and the other is facing to the one side with a predetermined gap and so arranged as to be vibratile relative to the one side.

Abstract: In a vibratory parts-feeder including; a feeder bowl in which a spiral track is formed, a vertical exciter with first electro-magnetic coil for exciting the feeder bowl in the vertical direction, a horizontal exciter with second electro-magnetic coil for exciting the feeder bowl in the horizontal direction, horizontal leaf springs for supporting the feeder bowl so as to be vibratile in the vertical direction, and vertical leaf springs for supporting the feeder bowl so as to be vibratile in the horizontal direction, wherein there is a phase difference between the currents flowing through the first and second electro-magnetic coils and the feeder bowl is elliptically vibrated, the improvements in which a phase adjusting circuit is connected to the first or second electro-magnetic coil, voltage adjusting circuits are connected to the first and second electro-magnetic coils and the ratio of the longer axis to the shorter axis of the elliptical vibration and the inclination of the longer axis thereof are varied wi

Abstract: The invention disclosed is an elliptical vibratory apparatus including a first controller which includes at least a first phase shifter, a first high-gain amplifier and a first saturating element; a first power amplifier for amplifying an output of the first controller; a first vibratory exciter receiving an output of the first power amplifier for generating a horizontal vibrational force in a horizontal direction; a horizontal vibrational system of an elliptical vibratory machine receiving said horizontal vibrational force; a vibrational displacement detector for detecting a horizontal displacement of a movable part of the elliptical vibratory machine in the horizontal direction, the output of the vibrational detector being supplied to both the input of the first controller and the input of a second controller; the second controller including at least a second phase shifter, a second high-gain amplifier and a second saturating element; a second power amplifier for amplifying an output of the second controlle

Abstract: An elliptical vibratory apparatus includes first and second controllers; first and second power amplifiers for amplifying outputs of the first and second controllers; first and second vibratory exciters receiving outputs of the first and second power amplifiers for generating first and second vibrational forces in first and second directions; first and second vibrational systems of an elliptical vibratory machine receiving the first and second vibrational forces; and detectors of first and second vibrational displacements for detecting vibrational displacements of a movable part of the elliptical vibratory machine in the first and second direction. A closed loop is formed by the first and second controllers, the first and second power amplifiers, the first and second vibratory exciters, the first and second vibrational systems, and the detectors of the first and second vibrational displacements.

Abstract: In a vibratory apparatus including vibratory speed detector for detecting a vibratory speed of a vibratory machine, a self-excited oscillation controller for amplifying the output of the vibratory speed detector at a feed-back gain K, receiving the output of the vibratory speed detector as a positive feed-back signal, a power amplifier for power-amplifying the output of the self-excited oscillation controller and a vibratory exciter receiving the output of the power amplifier for vibrating the vibratory machine, the feed back gain K is changed in accordance with the equation; K=K.sub.1 .DELTA.r+K.sub.3 (.DELTA.r).sup.3 +Kcr, where .DELTA.r represents the amplitude difference between a predetermined amplitude and the present amplitude, K.sub.1, K.sub.3 constants, and Kcr critical stability gain.

Abstract: It is an object of the present invention to control and damp with as few actuators as possible, vibrations generated in various directions on the bed of an automatic transport vehicle employed in clean rooms and other facilities. The automatic transport vehicle of the present invention comprises a truck (1a) and bed (1b) elastically supported with respect to the truck, a plurality of actuators (36) installed between them with inclined lines of action, sensors (40) which detect acceleration in the direction of the lines of action of these actuators, vibrations being suppressed by controlling the driving force of the actuators in accordance with the acceleration detected by the sensors.