Fuzzy logic Controller Design for gun-turret system

Abstract

High precision control is desirable for future weapon systems. In this paper, several control design methodologies are applied to a weapon system to assess the applicability of each control design method and to characterize the achievable performance of the gun-turret system in precision control. The design objective of the gun-turret control system is to achieve a rapid and precise tracking response with respect to the turret motor command from the fire control system under the influences of disturbances, nonlinearities, and modeling uncertainties. A fuzzy scheme is proposed for control of multi-body, multi-input and multioutput nonlinear systems with joints represented by a gun turret-barrel model which consists of two subsystems: two motors driving two loads (turret and barrel) coupled by nonlinear dynamics. Fuzzy control schemes are employed for compensation and nonlinear feedback control laws are used for control of nonlinear dynamics. Fuzzy logic control (FLC) provides an effective means of capturing the approximate, inexact nature of the real world, and to address unexpected parameter variations and anomalies. Viewed in this perspective, the essential part of the FLC is a set of linguistic control rules related by the dual concepts of fuzzy implication and the compositional rule of inference. In essence, the FLC provides an algorithm which can convert the linguistic control strategy based on expert knowledge into an automatic control strategy. Accordingly, the design must be robust, adaptive, and, hopefully, intelligent in order to accommodate these uncertainties. Simulation results verify the desired system tracking performance.

Identification of an optimum control algorithm to reject unwanted yaw effect on wheeled armored vehicle due to the recoil force

“…The impulse of burst force is possible to calculate as the integral from the shot beginning to t k shot final time. 15 The term v o is the initial velocity of the projectile leaves the muzzle, m m and m w are the mass of projectile and propellant charge, while the factor of activity gunpowder gases 7 is known as b g . Meanwhile, the lateral acceleration, a y , can be measured by summing all the lateral forces, F y total , acting on the wheel and the body of the armored vehicle…”

“…Meanwhile, other researchers such as Balla, 14 Galal et al, 15 and Gomez and Ferreira 16 improved the firing accuracy of the gun turret system due to the impact of recoil forces. An automatic target tracking control for the gun turret system is mainly focused on that particular research work.…”

Fuzzy Logic Controller for Enhancing RCS's Lab Measurements

“…Also, the performance can be improved by changing the severity of the rules [21]. After adjusting the rules and membership functions, the final rules and membership functions are obtained as shown in, Table 3 and Figure (5) respectively.…”