The present invention provides a high-quality user experience through control of a high-performance motion platform that minimizes the cost of motion data communication, and provides a real-time motion simulation system that reduces VR motion sickness by delivering a sense of motion synchronized with a motion simulation system. It relates to a motion buffer control method of the motion, the motion control software (SW) is installed simulation system 11, the motion input unit 12, the rear buffer 13, the front buffer 14, the motion consisting of a motion transmitter 15 A motion control terminal 100 composed of a system 20; In the motion buffer control method of a real-time motion simulation system using a motion platform (200) equipped with a motion controller (21) and an actuator (18) composed of a ring buffer (16), a motion processor (17), and a motion receiver (19) ; The motion input unit 12 transmits and synchronizes each axis motion position value to the motion controller 21 in the same motion control cycle as the simulation cycle in the real-time motion simulation system 11, and the motion control software SW synchronizes to the simulation cycle. Motion samples are stored in the motion buffer, and can be transmitted to the motion controller 21 in units of motion buffer. PCM data sampled from the motion input signal or the interpolation signal of the simulation result is generated and stored in the rear buffer 13 and; The motion transmitting unit 15 controls motion with a double buffer composed of the rear buffer 13 and the front buffer 14 to reduce the synchronization delay of the motion input unit 12 due to waiting for the buffer processing of the motion receiving unit 19, ; The motion input unit 12 and the motion transmission unit 15 always use the rear buffer 13 and the front buffer 14, and the motion input unit 12 requests to transmit the rear buffer 13 to the motion transmission unit 15. After detecting that the transmission of the front buffer 14 of the motion transmitter 15 is completed, it is characterized in that the data of the two buffers are exchanged with each other.
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