ROTATION CONTROL APPARATUS FOR ROTARY ACTUATORS

WIPO Patent Application WO/1996/030650

A1

A low-cost, precision rotation control apparatus suitable for a large-output rotary actuator. This apparatus comprises a hydraulic rotary servo valve (4) having a rotary spool (40) and a rotary sleeve (20); an electric motor (5) having an output shaft connected to either the rotary spool (40) or the rotary spool (20), the motor being electrically controlled to vary its rotational speed and angular position; a hydraulic motor (3) having an output shaft connected to the remaining one of the rotary spool (40) and rotary sleeve (20); a hydraulic pump (1) adapted to drive the hydraulic motor (3) via the hydraulic rotary servo valve (4); and a driving power source (2) for driving the hydraulic pump (1).

JP3814807	METHOD AND APPARATUS OF CONTROLLING SOLENOID VALVE OF AUTOMATIC TRANSMISSION FOR VEHICLE
JP2004521283	Multiple Input-Multiple Output Control Methods and Devices for Valve / Actuator Devices

ISHIZAKI NAOKI (JP)
UEHARA KAZUO (JP)
YAMAGUCHI HIROMASA (JP)

PCT/JP1996/000751

October 03, 1996

March 22, 1996

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KOMATSU MFG CO LTD (JP)
ISHIZAKI NAOKI (JP)
UEHARA KAZUO (JP)
YAMAGUCHI HIROMASA (JP)

F15B9/09; F15B13/043; (IPC1-7): F15B9/09; F15B9/14

JPS6383403A	1988-04-14
JPS56171189U	1981-12-17
JPS4810473A

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