BTA钻杆系统的涡动偏心及压电控制研究∗

摘要

The control method of eccentric motion of BTA deep-hole drill pipe system is studied,and the ec-centric motion mode and stress distribution of the system are analysed. Based on the linear quadratic regulator ( LQR) modal control,a kind of piezoelectric active control method is proposed. Using the theory of piezoe-lectric BTA drill pipe,and combined with MATLAB software to simulate the control of whirling. The simu-lation verifies the rationality of the method of piezoelectric active control,and it has theoretical significance for the BTA drill pipe system movement stability control research.%对BTA钻杆系统偏心运动的控制方法进行了研究，分析了钻杆系统的偏心运动方式和受力情况。基于线性二次型( LQR)最优模态控制，提出了一种压电主动控制方法。利用压电BTA钻杆理论，结合MATLAB软件对涡动控制进行仿真。仿真结果验证了压电主动控制方法的合理性，对BTA钻杆系统的运动稳定性控制的研究具有理论意义。