Title:
【発明の名称】サ-ボ液圧制御系の荷重動力学補償回路
Document Type and Number:
Japanese Patent JPS61501413
Kind Code:
A
Abstract:
A load dynamic compensation circuit for a servohydraulic control system for fixtures and specimens being tested operating in various degrees of freedom, for example in an environment to simulate earthquakes to test building specimens, or to provide road profile simulation for rail and automobile vehicles, or wind buffet loads for aircraft. A compensation circuitry compensates for specimen displacement disturbances in the control loop that are a function of the force exerted from the specimen and the acceleration of the test mass. This specimen disturbance factor may be provided by adding only a differential pressure transducer to measure the force on the actuator, and an accelerometer to measure the mass acceleration, to obtain the necessary electrical signals, which after being modified by factors including the oil column compliance spring factor, the piston area and the servovalve flow gain, is differentiated to compensate for the piston integration, and is then added in a summing junction into the servovalve command signal loop. The compensation signal is an anticipatory signal compensating for load dynamics on the specimen.
Inventors:
Clark, Allen Jay
Maue, Dale N
Maue, Dale N
Application Number:
JP50103985A
Publication Date:
July 10, 1986
Filing Date:
February 06, 1985
Export Citation:
Assignee:
MT Systems Systems Corporation
International Classes:
F15B9/09; G01M7/02; G01M7/06; G09B9/14; (IPC1-7): F15B9/09; G01M7/00
Attorney, Agent or Firm:
Kyozo Yuasa