To choose and design the actuators is an important step in implementing an ASAC.An active control strategy with the rectangle piezoelectric actuators is established by using the inverse piezoelectric reaction of the piezoelectric materials and the radiation modes theory.And the best control voltages upon the actuators are abtained.Taking the simple-supported plate as an example

the control rules of the piezoelectric actuators are revealed by analyzing the control effects.Comparing control effects of the piezoelectric actuators with that of the point force

the advantage of the active control strategy with the piezoelectric actuators is demonstrated.