GAP CONTROLLER FOR ELECTROMAGNETIC LEVITATION SYSTEMS

摘要

PURPOSE: To effectively insulate sound, minimize noise generated inside, and achieve decoupling between vibration of a machine and motion of a vibration sensing body. ;CONSTITUTION: This gap controller has control loop elements 1, 5. When the gap controller is designed so that a current adjustor and a frequency filter of the control element 1 can active-control current flowing in a solenoid by sensors 4, 6 in low and medium sound frequencies and cannot active-control them in high sound frequency, the control loop elements 1, 5 imitate mechanical braking and spring for sound insulation.;COPYRIGHT: (C)1993,JPO