Patent ID: 8513855
Filing Date: 2013-08-20
Classification: G01S,G10K

Abstract:
1. A control device for suppression of residual vibration of a piezoelectric transducer, the piezoelectric transducer being applied in a system with an equivalent mass block, said control device comprising: a capacitive energy storage component; and a switch unit coupled electrically to said capacitive energy storage component, and for coupling electrically to the piezoelectric transducer; wherein when said control device is operating in a non-working mode, said switch unit provides voltage on said capacitive energy storage component to the piezoelectric transducer for reducing the residual vibration of the piezoelectric component; wherein said capacitive energy storage component has a capacitance value that is large enough to make the voltage on said capacitive energy storage component to substantially follow the voltage on the piezoelectric transducer while the control device operates under the non-working mode; wherein the voltage on said capacitive energy storage component under the non-working mode satisfies the following inequality: in which V