Mitsubishi Denki Kabushiki Kaisha

Kouichi Takamune

Takao Mizutani

Hidenobu Ito

Seiichi Mimura

Yoshio Kasuga

Hidenobu Itou

Yoshiyuki Hatsutori

An operation command for constructing compensation data is generated in a control device, and measurement data obtained from an external length measuring device is input to an input unit. The measurement data is compared with an estimated position in a control device of a cylinder servo motor, and errors between them is stored in a compensation memory. In addition, in normal operation, the external length measuring device is removed. A movement command is input to the input unit and compensated using the error stored in the compensation memory, so that the estimated error is deleted in the normal operation.

Control device-built-in cylinder servo motor

A thrust converter includes reciprocation movement means reciprocation-rotation conversion means for converting reciprocating movement of the reciprocation movement means into rotational movement; rotation-reciprocation conversion means for converting rotational movement of the reciprocation-rotation conversion means; and reaction-force receiving means for supporting reaction force stemming from reciprocation movement of the rotation-reciprocation conversion means. Thrust imparted to the reciprocation movement means can be imparted to a load while being amplified or reduced, through employment of a compact and simple construction.

Thrust converter, method of controlling the same, and controller for controlling the same

A cylinder servo motor includes a servo motor having a rotor and a stator; a cylinder servo main unit which is connected to a rotary shaft of the rotor of the servo motor by way of a ball screw nut and which has a ball screw shaft, the ball screw shaft moving in an axial direction; a rotation sensor for detecting a rotary position of the servo motor; and control means for controlling the rotation sensor and the servo motor. The cylinder servo motor main unit, the rotation sensor, and the control means are integrated together, thereby providing a cylinder servo motor which obviates a necessity of wiring a line between the servo motor, the rotation sensor, and the control device section at a location to which the cylinder servo motor is to be shipped.

Growing community of inventors

Tokyo, Japan

Kouichi Takamune