Abstract：In this paper the method solving AUV local path plan by fuzzy mathematics is presented. First, for the moving character of AUV, the translation and rotation rules of AUV is discussed. And then sonar informations are disposed by fuzzy mathematics. On the basis of summarizing human driving experiences, the AUV local path plan control forms are constituted. At last, the avoidance simulation is carried out with computer so the simulative results are given.
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