Author(s)

Chenyang Zhang, Hongzhou Jiang

Corresponding Author

Chenyang Zhang

ABSTRACT

For its high load carrying capacity, good dynamic performance and precise positioning, the electro-hydraulic 6 degree-of-freedom platform becomes more and more popular in field of motion simulator, and so on. But limited by the order of the transfer function, conventional proportional plus dynamic pressure feedback control does not produce better control results, for step signals. Due to the advantages of good control effect and relatively simple process, predictive function control has been well applied with the development of computer technology. Based on the above, a predictive function control algorithm based on modal space coordinate transformation is proposed in this paper. First, the transfer function of the platform in the modal space coordinates is transformed into the form of the state space, then predictive function control algorithm is designed for the independent state space equation previously obtained. Simulation results show that predictive function control produces better control effect.

KEYWORDS

Predictive Function Control, Modal Space, 6 Degree-of-Freedom Platform