Abstract: Optimization of actuator disposition in high level multiple degree of freedom structures is an important problem.A fuzzy algorithm, with which full use of a priori information can made, has been applied.Using this algorithm, optimization of disposition actuators is confined to a limited range, and subsequent calculations are easy and fast.The genetic algorithm has been used in the optimization, ensuring a good performance.

Key words: fuzzy-genetic algorithm, multiple degree of freedom, active control, optimal disposition