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		机械臂臂杆刚度主动控制下的末端振动特性研究$^{\bf 1)}$
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			RESEARCH ON VIBRATION CHARACTERISTICS OF THE MANIPULATOR END UNDER ACTIVE CONTROL OF ARM STIFFNESS$^{\bf 1)}$
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| 图10. 机械臂末端振动幅值随预紧力的变化曲线  | 
| Fig.10. The curve of vibration amplitude of manipulator end with preloading force  | 
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