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计算机控制系统控制穹幕影院的座椅，使之产生与银幕内容相配合的三维运动，观众在包括视觉、听觉、动感和力感的仿真环境下，得到身临其境的主观感受。计算机发出使支撑座椅的３ 个作动筒移动到指定位置的模拟电压信号，此信号与作动筒位置传感器的输出位置电压信号的差值作为伺服阀的控制电压信号。伺服阀根据控制电压的大小和方向向作动筒提供油压，使之产生相应速度和方向的三维运动。
The computerized control system controls the dome theater seats to create a three-dimensional motion that matches the screen content, giving viewers an immersive subjective experience in a simulated environment that includes visual, audible, dynamic, and forcefulness. The computer sends an analog voltage signal that moves the three actuators that support the seat to a specified position. The difference between this signal and the output position voltage signal of the actuator position sensor serves as the control voltage signal of the servo valve. Servo valve according to the size and direction of the control voltage to provide hydraulic actuator, so that the corresponding speed and direction of the three-dimensional movement.