Optimal control with fuzzy compensation for a magnetorheological fluid damper employed in a gun recoil system

Abstract

This article presents an optimal control strategy with fuzzy compensation for a magnetorheological fluid damper in control of a full-scale gun recoil buffering system. The novel control strategy combines the optimal control, in which no measurement feedback needed and the fuzzy logic control which is independent of any theoretical model. The theoretical optimal controllable damping force rule, as a fail-safe control output when the measurement system fails under the extreme condition of impact loading, is derived from the analytical solution of the kinematic equation of the recoil system with a magnetorheological damper. A one-dimensional fuzzy controller and a two-dimensional fuzzy controller are both designed and performed by simulation in order to evaluate the effectiveness of fuzzy control strategy as compensation in the magnetorheological recoil system. A magnetorheological damper for the real firing impact loading is designed and manufactured. Furthermore, an experimental study is carried out to evaluate the optimal control strategy with fuzzy compensation for magnetorheological damper on a firing test rig. The experimental results indicate that the proposed control strategy in this article obtains better buffering performance comprehensively compared with the conventional control strategies.