Research on the Robustness of PISS Integral Sliding Mode Control of Supersonic Missiles

Abstract

A simple PS adaptive integral sliding mode controller is designed for the pitch channel linear model of supersonic missile firstly. In order to improve the performance of the proposed method, two improvements also proposed. Finally, a hybrid PISS adaptive control is formed which contains proportion control, integration control, the sign function adn soft function. Also nurmerical simulations are done to the testify the above theory. And it shows that both the proportion control and sign function control methods are unable to achieve a satisfactory performance for supersonic missile system. And the integration of soft function , integral control item and proportion control can solve the chattering problem and static error problem. At last, simualtion figures shows that the PISS mehtod also has a strong robustness, which is testified by increasing or decreasing air-coefficients of the missile system .

Synchronization of Super Chaotic System with Uncertain Functions and Input Nonlinearity

“…There are adaptive method [10,11], neural network method [12][13][14][15], robust method [16][17][18][19][20][21], output feedback [22,23,24], linear feedback [25,26], PI control [27] and sliding mode method [28,29] to solve uncertainties of nonlinear system in control theory. For chaotic systems, researches are mainly focused on uncertain function [30], unknown parameters [31] and unknown control directions [32][33][34][35].…”

Medidas De Qualidade De Imagens Para Reconhecimento Facial

“…Experimentos conduzidos sobre a base de dados IMM para o algoritmo de reconhecimento baseado em padrões binários locais comprovam a o bom desempenho do metodologia. Versus 08,09,10,11,12. 81 Figura 5.5 -Gráfico de similaridade 03: Imagem 01 Versus 14,15,16,17,18.…”

“…Lei Liang e Yuanchang XU [10], apresentam uma variante adaptativa do método de Landweber (ALM) que converge mais rapidamente do que o método original.…”