Improved Mass Flow Rate Regulation Methods Based on Variable Frequency Control: A Case Study of Oxidizer Agent Weighing for Solid Propellants

The feeding and weighing of oxidizer agents is the key process solid rocket motor propellant preparation, its accuracy directly affects burning performance motors. At present, existing multi-batch methods have problem low high time consumption agent. In this paper, an improved mass flow rate regulation method based on variable frequency control proposed to improve reduce consumption. nonlinear variation during opening closing air-operated pinch valve analyzed. periodic introduced establish mathematical model frequency, then, parameters are obtained through discrete element method. plan were determined using multi-objective optimization experiments carried out, results show that compared method, optimized with by 0.37% reduced 25.6%.