Plate-like member vibration control device

A plate-like member vibration control device comprising:

• a plate-like member;
• a plurality of piezoelectric element actuators disposed on a surface of the plate-like member;
• at least one piezoelectric element sensor disposed on the surface of the plate-like member at a position between the plurality of piezoelectric element actuators;
• and
• a control circuit configured to perform feedback control of operation of the plurality of piezoelectric element actuators based on an output voltage of the piezoelectric element sensor so as to suppress vibration of the plate-like member, wherein
• the piezoelectric element sensor and the piezoelectric element actuators are positioned on the surface of the plate-like member with such layout that a part of the piezoelectric element sensor is deformed in a first direction and another part of the piezoelectric element sensor is deformed in a second direction opposite to the first direction in such a manner that anti-resonance occurs in the output voltage of the piezoelectric element sensor in a range where a vibration frequency of the plate-like member is 100 Hz or less.