2022/02/15 by Jingjie Wu, Lei Zhou, Wu, Jingjie +1
Computer Science · Engineering · #Advanced Measurement and Detection Methods #FOS: Electrical engineering #Iterative Learning Control Systems #Optical Systems and Laser Technology #Systems and Control (eess.SY) #cs.SY #eess.SY #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2202.07722
arxiv created 2022/02/15 · openalex publication_date 2022/02/15 · arxiv updated 2022/02/17 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/28
Precision motion stages are an essential part of a wide range of manufacturing equipment, and their motion performance are critical to the quality and throughput of the systems. The drastically increasing demand for higher manufacturing throughput in various processes necessities the development of next-generation motion systems with reduced moving weight and high control bandwidth. However, the reduction of moving stage's weight can lower the stage's structural resonance frequencies, making the hardware dynamics and controller design problem strongly coupled. Aiming at this challenge, this paper proposes a new formulation of nested hardware and control co-design framework for precision motion stages. The proposed framework explicitly optimizes the closed-loop control bandwidth with guaranteed robustness, and explicitly considers the limits in the physical system. Two case studies, including a motivating example using lumped-parameter mechanical system and a finite-element-simulated lightweight motion stage, are being used to evaluate the effectiveness of the proposed nested CCD framework. Simulation results show that the proposed nested CCD framework has 42% of weight reduction and 28% bandwidth improvement compared with a sequential design baseline, which demonstrates the efficacy of the proposed approach.