A novel polishing technology for leading and trailing edges of aero-engine blade

Zhu, Zheng-Qing; Chen, Zhitong; Zhang, Yun

doi:10.1007/s00170-021-07574-6

Cited by 8 publications

(1 citation statement)

References 7 publications

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“…Polishing is a surface finishing process that aims to enhance the appearance or the functionality of a workpiece through material removal or shape modification [1]. It is widely applied in various fields, including metal processing, mold manufacturing, aerospace engineering, and biomedical engineering [2,3]. However, the traditional manual polishing process heavily depends on skilled labor, resulting in inconsistent quality and low productivity.…”

Section: Introductionmentioning

confidence: 99%

Design of Backstepping Sliding Mode Control for a Polishing Robot Pneumatic System Based on the Extended State Observer

Li,

Ding

2023

Machines

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Due to advantages such as a high power-to-weight ratio, a simple structure, and low cost, pneumatic systems are widely applied in automation. However, precise position control of pneumatic actuators is challenging because of factors such as friction, compressibility, and external disturbances. This paper presents a backstepping sliding mode control (BSMC) strategy based on the extended state observer (ESO) for pneumatic cylinder position tracking. A nonlinear model of the pneumatic system is first established, then system states and disturbances are estimated by an ESO, next the BSMC approach is developed using backstepping method and sliding mode control theory, and the stability of the ESO and controller is analyzed using Lyapunov theory. Finally, simulations and experiments on a pneumatic testbed are performed to compare the effectiveness of the proposed approach with PID control. The results show that the proposed strategy improves tracking accuracy and robustness against disturbances, with a 77.04% reduction in root mean square error (RMSE). This research provides a promising control solution for automated pneumatic polishing robots.

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Section: Introductionmentioning

confidence: 99%