An included angle gridding algorithm for multimodel decomposition of hammerstein systems with input multiplicity

This paper proposes an included angle gridding algorithm for Hammerstein systems with input multiplicity for which the common nonlinearity inversion control method can not be used. Different from the common gridding method, the included angle gridding algorithm takes the nonlinearity of a Hammerstein system into account so that the efficiency of the consequent multimodel decomposition can be improved largely. Based on the decomposition result, a Multi-PI controller is designed. Simulations demonstrate the effectiveness of the proposed gridding algorithm.