Document Type and Number:
Japanese Patent JPS6213522
Kind Code:
B2
Abstract:
Two embodiments of closed loop electro-fluidic controlled systems are disclosed for controlling the velocity, acceleration, torque, force or pressure applied to the member. The system includes a source of electrical command signals correlated to the desired magnitude of the parameter being controlled, a transducer responsive to the controlled member for providing an electrical feedback signal correlated to the actual value of the parameter, and a circuit for providing an error signal correlated in magnitude and polarity to the magnitude and sense of the difference between the actual and desired values of the controlled parameter. Also included is a transducer responsive to the error signal for applying a positioning force to a movable valve closure element, which is subjected to no other forces, to regulate the application of pressurized fluid through the valve to the controlled member in dependence upon the error signal. No feedback, mechanical, fluidic or otherwise, exists between the valve element and the transducer which positions it.
Inventors:
DEIINZU BII HANKAA
HANSU OOTORETSUPU
HANSU OOTORETSUPU
Application Number:
JP4192977A
Publication Date:
March 27, 1987
Filing Date:
April 12, 1977
Export Citation:
Assignee:
HUNKAR LABORATORIES
International Classes:
G05D3/00; F15B9/03; F15B9/09; F15B11/04; G05B11/06