MULTIPOINT EXCITATION CONTROL SYSTEM OF VIBRATING BASE APPARATUS

摘要

PURPOSE:To surely and readily control respective exciters and facilitate the design, adjustment, maintenance, etc. of the vibrating base apparatus by independently controlling the exciters of multiple points for imparting vibrations according to the displacements, speeds, accelerations, etc. of the vibrating base. CONSTITUTION:The command signals from a command signal generator 13 corresponding to the vertical and horizontal vibrations of a vibrating base 1 cause the servo valves 3-1... of respective multipoint exciters #1... to be opened by way of an operational amplifier 11 and servo amplifier 12, causing the vibrating base 1 to vibrate. The displacements, speeds and accelerations near the exciters #1... by the vibrations thereof and the servo hydraulic pressure differences of the respective exciters are detected with detectors 4-1..., 5-1,,,. 6-1... Based on these detection signals, the pitching and rolling compensation values of the perpendicularly intersecting two axis directions by compensation operating parts 14, 15 and the compensation servo hydraulic pressure differences by a differential amplifier 10 and operating part 16 are computed and are then fed back to the amplifier 11, whereby the respective exciters are independently controlled and the influences of inconveniences in the displacement detection are less than mean value control, thus the apparatus of easy design, adjustment and maintenance may be provided.