研究目的
Investigating the design and performance of a decoupled 2-DOF stick-slip positioning stage for high precision positioning applications.
研究成果
The proposed decoupled 2-DOF stick-slip positioning stage demonstrates good dynamic performance, with a maximum step displacement of 8.1 μm. The design effectively utilizes a clamping mechanism to adjust friction force and a hybrid decoupling strategy to minimize cross-coupling errors. Future work will focus on structural optimization and performance enhancement.
研究不足
The study focuses on the design and simulation of the positioning stage, with experimental validation not detailed. The performance is mainly evaluated through simulation, which may not capture all real-world dynamics.
1：Experimental Design and Method Selection:
The study involves the design of a 2-DOF stick-slip positioning stage using piezoelectric actuators and a clamping mechanism to adjust friction force. Finite element analysis (FEA) is used to explore the characteristics of the driving unit.
2：Sample Selection and Data Sources:
The material of the positioning stage is AL7075, with specific physical parameters.
3：List of Experimental Equipment and Materials:
Piezoelectric actuators (PZTs), clamping mechanism, friction piece, motion platform, and cross-roller linear guides.
4：Experimental Procedures and Operational Workflow:
The working principle involves adjusting the normal force via a clamping mechanism and using PZTs for precise positioning.
5：Data Analysis Methods:
Dynamic modeling and simulation in MATLAB/Simulink using the LuGre friction model.
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