TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C · 1993 · 27 citations · 0 references
EngineeringMechanical EngineeringMechatronics EngineeringActuatorsProcess ControlVibrationControl SystemsControl TheoryDisturbance RejectionIsolator TechnologyVibration ControlVibration IsolationActive ControlFeedforward Control SystemsGround-borne VibrationHigh PerformanceIsolation Control SystemsMulti-degree-of-freedom IsolationPerformance RequirementsPerformance Requirements Analysis
On microvibration isolation systems, three performance requirements are imposed : ( 1 ) isolation from ground vibration, ( 2 ) suppression of direct vibration, and ( 3 ) stabilized positioning. These requirements have some trade-off relationships when are applied conventional passive technologies or feedback-controlled active technologies. In order to obtain high performance and to break through the trade-off limitations, a double-active control method with feedforward control is proposed. Feedforward control is effective for cancelling disturbances and for positioning the controlled object. Thus, this control method realizes all three requirements for the isolator. Experimental results show the usefulness of the proposed control scheme.