what is piezoelectric vibration sensor

Piezoelectric ultrasonic motors utilize the inverse piezoelectric effect of piezoelectric disc crystal to generate ultrasonic vibrations, which amplify the micro-deformation of the material through resonance, and piezoelectric sensor circuit are driven by the frictional force between the vibration part and the moving part. The new micro-motor without the usual electromagnetic coil is required. Compared with traditional electromagnetic motor, piezo ceramics microphone has the advantages of low cost, simple structure, small size, high power density, low speed performance (it can realize low-speed operation without deceleration mechanism) conical piezoelectric transducers is large torque and braking torque, fast response, high precision, no magnetic field and electric field, no electromagnetic interference and electromagnetic noise etc. Piezoelectric ultrasonic motors are widely used in precision instruments, aerospace, automatic control, office automation, and miniaturization due to their own characteristics and performance advantages.Piezo ceramic discs wire leadsis used for in the field of mechanical systems, micro-assembly, precision positioning, etc. Currently, Japan is in a leading position in this field. Piezoelectric ultrasonic motors have been commonly used in the automatic focusing of cameras and cameras, and a series of products have been formed.