Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Abstract Engine mount system affects the automobile NVH performance. Active mounts would achieve excellent vibration isolation and relative displacement control performance in a broad frequency bandwidth by outputting controlled force to mounting system. The actuator method of active determine In this paper, an based on smart material, i.e., Terfenol-D rod, is proposed, which mainly includes three parts: rubber spring, magnetostrictive (MA), hydraulic amplification mechanism (HAM). Dynamic model correspondingly established. A state feedback x -LMS (Least-Mean-Square) algorithm proposed as well. Specifically, with consideration unmeasurable parameters system, controller reference signal constructed employing Sage-Husa Kalman filter realize estimation Then detailed analysis conducted, deriving iterative formula tap-weight vector. Sequentially, problem dependence excitation addressed. feasibility capability are verified evaluated simulation two-degree-of-freedom