Figure 11From: Principle and Control of Active Engine Mount Based on Magnetostrictive ActuatorComparison between estimated system state and real system state at the engine speed of 3000 r/min: a \({X}_{1}\): engine displacement, b \({X}_{2}\): engine velocity, c \({X}_{3}\): sprung mass displacement, and d \({X}_{4}\): sprung mass velocityBack to article page