Author:
Wang Chunmei,Li Hong,Lu Yunxiang,Song zhang
Abstract
How to achieve high-precision control is the core issues of the linear motor research. To solve this problem, this paper proposes a new control algorithm. on the one hand, through the sliding mode control for the unknown torque observations, in the process of observation, select a specific based function to approximate the sign function in order to eliminate the jitter of the vicinity of the switching surface; On the other hand, the use of model predictive control method (Model Predictive Control) to achieve the torque compensator track to achieve the velocity and displacement tracking. The constant sampling time of the model predictive control in the new method can effectively avoid the problems that the number of switching per unit time of the inverter can’t be expected.
Reference9 articles.
1. Kennel R., Linder A., Linke M., et al. Generalized predictive control (GPC)-ready for use in drive applications. IEEE, 2001: 1839–1844 vol. 1834.
2. Linder A., Kanchan R., Kennel R., Stolze P. ModelBased Predictive Control of Electric Drives. Cuvillier. 2010.
3. Huang Y. S. and Sung C. C., et al. Implementation of sliding mode controller for a linear synchronous motor based on direct thrust control theory. IET Control Theory Appl. 2010, p. 1–13.