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		考虑可控性的压电作动器拓扑优化设计 1)
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			TOPOLOGY OPTIMIZATION OF PIEZOELECTRIC ACTUATOR CONSIDERING CONTROLLABILITY 1)
			 
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		 图4. 考虑1$\sim $5阶模态可控性的拓扑优化结果  | 
	
Fig. 4. Topology optimization result for the controllability considering first five modes  | 
	
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