Active vibration control using compliant-based actuators

In this work, an active vibration control method using compliant-based actuators is proposed for controlling a wide range of vibration and its noise-associated applications. The compliant-based actuator combines a conventional actuator with elastic elements, such as passive springs, that can be demonstrated to have better accuracy and robustness for force control compared to conventional stiff actuators. At high frequencies, the actuator behaves like a passive spring with low impedance, providing a better shock resistance to the actuator than the stiff actuator. These capabilities are beneficial for developing an effective vibration isolation system, particularly for controlling the vibration transmissibility at important low frequencies. The effect of compliant stiffness on the vibration control performance is investigated. It is shown that Proportional-Derivative (PD) control method using a compliant-based actuator can be used to obtain effective control of force transmissibility at low frequencies.