Research On H₂/H_∞ Control Method Of Diesel Generator Sets For Mine Electric Wheel Dump Trucks

Robust control method has many unique advantages for the solution of uncertain system problems.The mixed H₂/H∞control theory is more widely used in recent years.The mixed H₂/H∞control theory can play a good role in controlling the parameter uncertainty of the controlled system,and it can also achieve good suppression effect for external disturbances.Combined with the parameters uncertainty and disturbance uncertainty of the mine electric wheel dump truck,this paper applies the hybrid H₂/H∞control theory to the diesel generator set speed control system of the mine electric wheel dump truck.Based on the establishment and analysis of the mathematical model of the diesel generator set,the control effect of the H₂/H∞controller on the diesel generator set speed control system was studied.This article establishes the mathematical model of the diesel generator set,and explains the relationship between the diesel engine speed,the generator power angle and the output shaft stroke of the diesel engine in a mathematical way.The dynamic equation of the diesel generator set speed regulation system is described in detail.pattern of motion.Due to the strong nonlinearity of the diesel engine dynamics equation,this paper analyzes it by the linear subsection method and solves the nonlinear problem of the diesel engine dynamics equation.This paper analyzes the hybrid H₂/H∞control theory,introduces the basic knowledge of the hybrid H₂/H∞control theory,and gives a detailed description of the H₂,H∞,H₂/H∞control theory.For the method of solving the H₂/H∞control problem,this paper also gives the relevant theoretical knowledge,which provides a theoretical basis for further solving the H₂/H∞control problem.For solving the H₂/H∞control problem,this article gives a detailed introduction to its commonly used solution method,LMI toolbox method,and illustrates the conservativeness of the LMI toolbox method in solving H₂/H∞control problems.In order to reduce the conservativeness of the LMI toolbox method when solving the H₂/H∞control problem,this paper uses the IMOSADE algorithm to perform the computational and simulation research on the hybrid H₂/H∞control problem.The calculation results show that the IMOSADE algorithm can obtain a better state feedback controller and system performance index relative to the LMI method for solving mixed H₂/H∞control theory problems.Through the study of diesel generator speed control system found,based on the dynamic characteristics of diesel generator governor IMOSADE algorithm governor LMI better than methods.