Title:
POWER SERVO SYSTEM
Document Type and Number:
Japanese Patent JPS5966705
Kind Code:
A
Abstract:
An electro-hydraulic servo control system which includes a servo actuator adapted to variably position a load mass, and an actuator control system which includes a sensor coupled to the actuator for providing an indication of measured actuator position and a digital observer responsive to measured actuator position for estimating velocity and acceleration at the actuator. Signals indicative of measured actuator position, estimated velocity and estimated acceleration are fed to a comparator, together with a position command signal, for obtaining a difference or error signal to provide a control input to the actuator. The observer electronics includes digital computation means suitably programmed to estimate position, velocity and acceleration as solutions to three linear equations with three unknowns. Equation constants, which are functions of actuator and driven mass physical characteristics, are entered through operator-adjustable resistors. The actuator position and error input signals are periodically sampled and stored as inputs to the observer electronics. The observer electronics also embodies a self-test feature to facilitate maintenance in the field.
Inventors:
AASAA HENRII DERUMEEJI
IIHIA MOHAMEDO ERUUFUTSUSEINI
MERUBUIN AASAA ROODO
RAERU BURENTO TAPURIN
IIHIA MOHAMEDO ERUUFUTSUSEINI
MERUBUIN AASAA ROODO
RAERU BURENTO TAPURIN
Application Number:
JP16684283A
Publication Date:
April 16, 1984
Filing Date:
September 12, 1983
Export Citation:
Assignee:
VICKERS INC
International Classes:
B25J9/18; G05B13/00; G05B13/04; G05B21/02; G05B17/00; G05B19/19; (IPC1-7): G05B13/02; G05B17/02; G05B21/02
Domestic Patent References:
| JPS54109118A | 1979-08-27 | |||
| JPS5254879A | 1977-05-04 | |||
| JPS5270288A | 1977-06-11 | |||
| JPS55162894A | 1980-12-18 | |||
| JPS5783181A | 1982-05-24 | |||
| JPS5788887A | 1982-06-02 | |||
| JPS57132789A | 1982-08-17 |
Attorney, Agent or Firm:
Kaoru Furuya