Research on the hardware-in-the-loop simulation of magnetorheological damper subjected to impact load

With the rapid development of structure design and the applications of high and new technology, more and more impact issues have occurred in engineering applications, especially in weapon system. This paper was explored and aimed at its dynamic character and vibration control of magnetorheological damper subjected to impact load. In order to evaluate its controllability of the designed long-stroke gun recoil MR damper in reducing the recoil displacement and damping force, a suit of hardware in the loop simulation platform based on dSPACE system and MR damper under impact load excitation is designed and developed. Based on the fluid mechanics theory, an amendment dynamic model of magnetorheological damper subjected to impact load is derived. Considering the impact load character and its strong nonlinear and uncertainty of a magnet-rheological damper, a fuzzy controller is designed and applied into the electromagnetic coil to achieve a control of active variable damping. The experimental results proved the derived dynamic modelpsilas correctness for magnet-rheological damper under impact load, and indicated that the designed large-scale single-ended MR damper and fuzzy controller could reduce off 40% its recoil displacement and pressure peak value of MR damper, which will further establish the basis of engineering application for a magnet-rheological damper under impact load.