Chatter Suppression of Piezoelectric Intelligent Thin Plate Based on PD–Sliding Mode Coupled Control
SONG Qinghua1, 2, LI Zhenmin1, 2, YANG Xinyu1, 2, MA Haifeng1, 2
1. School of Mechanical Engineering, Shandong University, Jinan 250061, China;
2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Shandong University, Ministry of Education, Jinan 250061, China
This paper aims at the chatter problem in thin-walled parts, which is dominated by the flexibility of the workpiece. A chatter suppression method for the piezoelectric intelligent thin plate was presented based on the PD–sliding mode control (SMC) coupled algorithm. Firstly, an active control algorithm with only displacement measurement required was designed. The uncertainty of system parameters and the external disturbance were treated by the SMC theory. In addition, a dynamic compensator was established to approximate and compensate the unknown cutting state online. To overcome the sensing error and system delay, a time-space-varying PD control method was further coupled in the SMC.
The time-varying functions of control parameters were fitted with the help of ABAQUS simulation. Finally, a set of active control devices was designed for thin-walled workpiece. The experimental results show that the milling chatter of thinwalled parts can be suppressed effectively under active control, which verifies the feasibility of the proposed method.
宋清华,李振民,杨欣宇,马海峰. 基于PD–滑模耦合算法的压电智能薄板颤振抑制[J]. 航空制造技术, 2024, 67(1/2): 28-37.
SONG Qinghua, LI Zhenmin, YANG Xinyu, MA Haifeng. Chatter Suppression of Piezoelectric Intelligent Thin Plate Based on PD–Sliding Mode Coupled Control[J]. Aeronautical Manufacturing Technology, 2024, 67(1/2): 28-37.