VR motion base control apparatus and it's supporting structure

In a VR motion producing apparatus and an apparatus, comprising: a reception unit for receiving a presently projected picture frame No. from a picture apparatus; a detection unit for detecting a frame No. of operation data of a motion base presently executed by a motion base; a difference unit for comparing the picture frame No. with the motion frame No. to calculate a difference between them; a calculation unit for calculating an operation velocity of a motion base so as to correct this difference value; and a synchronization unit for reducing the difference between the picture frame No. and the motion frame No. for operating the motion base from the calculated velocity, a simulation rider transporting apparatus is featured by that an object to be controlled is a dynamic object; a motion model conversion unit is an apparatus for converting a motion model of a dynamic object to be controlled into a motion model of a motion base having a finite stroke, and furthermore contains two crank arms whose one ends are coupled to an elevation unit, a motor equal to a drive unit for changing an angle "prop" between the two crank arms into a preselected value to hold this changed angle, and a speed reducing machine; and a crank rod is coupled to a rider containing base while having a rotation free degree along 3 axial directions.