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The motion washout aims to bring the actual movement of the ship back to the six degree of freedom motion simulator, and to provide as real motion as possible in the limited space of the simulator. The emphasis of the classic washout algorithm lies in the choice of parameters. This paper analyzes the time domain response of the filter and combines the platform motion range with the human sensory system threshold to impose performance requirements on the system. To optimize the parameter selection according to the system performance, and get a good result of motion washout.

No abstract

As a novel porous functional material, metal rubber (MR) had many advantages of high loading capacity, high anti-blocked capacity and adjustable porosity with outside pressure made the MR more suitable as filtration material. However, there was no related study and successful application nowadays except in Russia. This study detailed investigated the filtration performance of MR including the influence of wire line diameter, porosity and molding thickness on initial pressure drop under clean liquid condition and their effects on pressure drop-flow rate property and filtration efficiency under contaminated liquid condition. The results indicate that the initial pressure drop increased with the decrease of porosity and wire line diameter, however decreased with the decrease of molding thickness when the flow was constant. Filtration drop increased significantly with the decrease of porosity. MR material made of small diameter wires showed a high filtration efficiency and large pressure drop because of its’ fine micro-pore. Filtration drop rose with the increase of molding thickness however, the filtration efficiency was little affected. These results provide a suitable guideline for further MR filter appliance and MR material research.