Precision Trajectory Tracking Control of a Pneumatic Cylinder and Output Stiffness Regulation

Abstract:

Precision motion trajectory tracking control of a single rod pneumatic cylinder driven by two proportional pressure valves is considered. Rather severe nonlinearities and uncertainties exist in the dynamic modeling of the system. In order to guarantee both the transient performance and final accuracy, a nonlinear adaptive robust controller is developed. The proposed controller comprises a sliding mode controller (SMC) and an on-line recursive least squares estimator (RLSE). The RLSE is utilized to reduce the extent of parametric uncertainties, and the SMC is adopted to attenuate the effects of parameter estimation errors, unmodelled dynamics and disturbance. Since pressure in each cylinder chamber is controlled independently, output stiffness regulation can be achieved by changing the nominal control voltage. Several experiments are conducted to test the proposed control strategy, and the results well fulfill the design requirements.

• Periodical: Applied Mechanics and Materials (Volumes 278-280)
• Pages: 1486-1490
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.278-280.1486
• Online since: January 2013
• Authors: Wei Ban, Guo Liang Tao, De Yuan Meng, Yue Feng Yuan
• Keywords: Adaptive Robust Control, Output Stiffness Regulation, Trajectory Tracking

References

[1] S. Ning and G. M. Bone: IEEE/ASME Transactions on Mechatronics vol. 12(2007), pp.557-561.

[2] X.S. Wang, Y.H. Cheng and J.Q. Yi: Control and Decision vol. 22(2007), pp.601-607(in Chinese).

[3] A. Fujiwara, K. Katsumata and Y. Ishida: Proceeding of the 34th SICE Annual Conference (1995), pp.1281-1284.

[4] S. Shibata, M. Jindai, T. Yamamoto and A. Shimizu: JSME International Journal Series C Mechanical Systems, Machine Elements and Manufacturing vol. 49(2006), pp.189-196.

DOI: 10.1299/jsmec.49.189

[5] C.B. Zhu, G. Bao, B.X. Nie, Q.J. Yang and Z.W. Wang: Chinese Journal of Mechanical Engineering vol. 37(2001), pp.79-82 (in Chinese).

[6] B. Yao and M. Tomizuka: Automatica vol. 33(1997), pp.893-890.

[7] B. Yao, F. Bu, F. Reedy and G. Chiu: IEEE/ASME Transactions on Mechatronics vol. 5(2000), pp.79-91.

[8] L. Xu and B. Yao: IEEE/ASME Transactions on Mechatronics vol. 6(2001), pp.444-452.

[9] W. Ban, G.L. Tao, B. Lu, D.Y. Meng and Y.F. Yuan: Journal of Zhejiang University (Engineering Science), to be published.

[10] B. Armstrong, P. Dupont and C. Canudas: Automatica vol. 30(1994), pp.1083-1138.

[11] B. Yao: In proceedings of the American Control Conference (2003), pp.3020-3025.

[12] X. Shen, M. Goldfarb: Journal of Dynamic Systems, Measurement, and Control vol. 129 (2007), pp.425-434.