CONTROL DEVICE FOR STROKE OF ACTUATOR

Japanese Patent JP2010071414

A

To accurately control a stroke by a simple means by compensating aged deterioration of a flow rate control valve which controls working fluid, in a feedback control device for the stroke of an actuator driven by the working fluid.

This stroke control device of the actuator 110 has the single flow rate control valve 1 controlling supply and discharge of the working fluid, and the stroke is feedback-controlled by operating the flow rate control valve 1. The flow rate control valve 1 has a neutral position for stopping the supply and discharge of the working fluid, and a flow rate control valve control device 9 has a learning device 91 for learning the variation of the neutral position. In the feedback control, the flow rate control valve 1 is operated by adding a learned value of the neutral position obtained by the learning device 91 to a feedback manipulated variable output by a PID calculating section 94 to compensate the variation of flow characteristic caused by aged deterioration and the like.

JPH03303	METHOD AND APPARATUS FOR COMPENSATING PRESSURE FLUID CHARACTERISTIC OF SERVO VALVE IN ELECTROHYDRAULIC SERVO DEVICE
JPH1078163	VALVE SPOOL POSITIONING CONTROL DEVICE BY INTERNAL LOOP AND METHOD THEREFOR

TAKEI YOSHITAKE
YAMAMOTO YASUSHI
KASAI MASAYUKI

JP2008240949A

April 02, 2010

September 19, 2008

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ISUZU MOTORS LTD

F15B9/09; F16D48/02; F16K11/07; F16K31/06; G05D7/06

JPH06299813A	1994-10-25
JPH02165304A	1990-06-26
JP2004286191A	2004-10-14
JP2008232245A	2008-10-02
JP2010071405A	2010-04-02
JPH11108082A	1999-04-20
JPH10220258A	1998-08-18
JPH0874530A	1996-03-19
JP2004286191A	2004-10-14
JP2008232245A	2008-10-02
JP2010071405A	2010-04-02
JPH06299813A	1994-10-25
JPH02165304A	1990-06-26

Naozumi Ono
Takashi Iida
Sachiko Okunuki

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