Dynamic Disturbance and Error Analysis of Flexible Support System for Large Optical Mirror Processing

Abstract

To improve the accuracy of a flexible support system (FSS) used for optical mirror processing, the influence of air content in the working medium and ambient temperature change on the FSS is analyzed and studied. First, the disturbance model of the FSS and single support cylinder affected by different air contents in the working medium and ambient temperature is established, and the mapping relationship between the influencing factors and the affected factors is analyzed. Then, the effects of ambient temperature change on volume, support height, and support pressure for different air contents are simulated and analyzed separately. The results of the simulation obtained show that when the working medium is mixed with different volume fractions of air and the ambient temperature changes, upper and lower chamber volumes, support rigidity, and support height of the support cylinder are also changed. Finally, an experimental study of pressure changes in the upper and lower chambers, support height, and support rigidity changes at different ambient temperatures and air contents are carried out. By measuring the support height, support pressure, and support rigidity error, the effectiveness of the established mathematical disturbance model of FSS is further verified. It not only provides a theoretical basis for improving the support accuracy of the FSS but also provides a foundation for the application of the FSS in the processing stage of large optical mirrors.

Adaptive decentralized fuzzy compensation control for large optical mirror processing systems

“…The structure and distribution of the diaphragm cylinder are shown in Figures 3 and 4, respectively. For an in-depth examination of the FSS, please consult the detailed analysis in the author’s prior publication: DOI: 10.3390/app11062715 (Jin et al , 2021).…”

Multi-Objective Parameter Optimization of Flexible Support System of Optical Mirror

“…The force may crush the mirror surface, and thereby, result in the consumption of a substantial amount of manpower and material resources [8][9][10]. Therefore, the performance parameters of the bottom support system are crucial for ensuring the surface forming accuracy of optical mirrors, in addition to the improvement of the motion accuracy of robot and machine tool [11,12].…”