A new analytical system applying 6 DOF parallel link manipulator for evaluating motion sensation

A 6 DOF motion system using a new parallel link mechanism is developed for purposes of evaluating human motion sensation. This motion system is made up of three five-bar mechanisms, each of which has 2 degrees of freedom (DOF) and is driven by AC servo motors. Therefore, this system is very small and low cost, but its motion area is larger and its response is better than previous hydraulic Stewart platform. Furthermore, we have developed a high-speed parallel signal-processing controller for motion control and a new 6 DOF acceleration sensing system based on the parallel sensing concept. Combining the new motion and sensory system with multivideo system, we have built up a new analytical system for evaluating wide band-width of motion sensation in getting on such vehicles as automobile or airplane.