Two-stage thrust optimizing method based on downhill simplex method

Abstract

The invention provides a two-stage thrust optimization method based on a downhill simplex method, and the method comprises the steps: building a guided rocket trajectory dynamical model and a single-chamber double-thrust solid rocket engine total stroke equation, selecting engine thrust search parameters, building a state constraint equation and a target function, and carrying out the optimization of the thrust. The determined initial values of the search parameters are substituted into a downhill simplex optimization algorithm, the optimal solution of the search parameters is substituted into a first-stage average thrust and total stroke equation of the engine, and an optimal scheme of the two-stage thrust of the single-chamber double-thrust solid engine is formed, and the optimal scheme of the two-stage thrust of the single-chamber double-thrust solid engine is obtained under the multi-state constraint ballistic condition and the index constraint requirement of the single-chamber double-thrust solid rocket engine. The range capacity of the guided rocket is effectively improved, an excessively complex state equation caused by multiple search parameters is avoided, and the multi-search-parameter combined rapid optimization method for the solid rocket engine is formed.

Images