The present invention relates to {TAIL ~ a motion effector} for use in a virtual reality system; and, more particularly, to a motion effector controller capable of reducing a time gap between an input and an output and also eliminating the harmful effects caused by {HEAD ~ external disturbances} and modeling errors 
The present invention relates to { TAIL ~ a motion effector } for use in a virtual reality system ; and , more particularly , to a motion effector controller capable of reducing a time gap between an input and an output and also eliminating the harmful effects caused by { HEAD ~ external disturbances } and modeling errors
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