Study on Washout Filters and Motion Cue Design for Motion Simulation

• Main Authors: Cheng-Ta Chen, 陳正達
• Other Authors: Shun-Feng Su
• Format: Others
• Language: en_US
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/85008064208934269766

碩士 === 國立臺灣科技大學 === 電機工程系 === 90 === Motion Simulation is to rebuild the feeling of passengers in a vehicle from a locally moving simulator. The most popular device utilized in motion simulation is Stewart platform. Stewart platform is a six-degree-of-freedom device. Because Stewart platform is complicated and hard to design, washout filters are often used to fulfill such motion simulations. The idea of washout filters is to ignore the frequency that human to make using limited working space of platform to generate infinite motion be possible. Originally, motion simulation is developed to train flight pilot. Nowadays, motion simulation is not only employed in flight simulation, but also can be used in various vehicle simulations. There is another way of dealing with the motion of simulators. It is often used in the so-called virtual reality emulation theaters and referred to as the motion cue in this thesis. Because this kind of application is an off-line system, engineers can design the platform variation to generate motion cues by their experience. Because of this property, there are two major advantages for motion cue. One is that because motion cue is an off-line mapping, we can plan the whole motion to avoid the movement of actuators out of the work space. The other one is that motion cue can be added special movements to generate more entertaining effects. In this thesis, we design a spring device to be added after the washout filter to reduce the chance of reaching the boundary of the working space. Because motion cue deeply relies on an experienced engineer to arrange a good motion cue trajectory of Stewart platform positions, we attempt to build fuzzy rules to make the motion cue design more easily.