A switching linear hybrid piezoelectric ceramic drive circuit

Abstract

The invention discloses a switch linear mixed type piezoelectric ceramic drive circuit, and belongs to the field of piezoelectric ceramic drive. The switch linear mixed type piezoelectric ceramic drive circuit comprises a mixed type power supply control module, a switch type amplification module, a linear power amplifying module, a detection module, and a power supply. The mixed type power supply control module is mainly used for generating command signals for the switch type power amplifier and the linear power amplifier module. The switch type amplifier module is used for amplifying the command signals of the mixed type power supply control module into power signals for being used as a dynamic power supply of the linear power amplifying module. The output of the linear power amplifying module is used as the drive power supply of a piezoelectric ceramic executor. The detection module is used for detecting output voltages of the switch type power amplifying module and the linear power amplifying module. On the basis of ensuring small enough corrugation and fast enough response, the switch linear mixed type piezoelectric ceramic drive circuit reduces the system power consumption in the piezoelectric ceramic drive circuit by increasing the efficiency of the linear power amplifier. The switch linear mixed type piezoelectric ceramic drive circuit can be used as a piezoelectric ceramic drive power supply.

Description

technical field [0001] The invention relates to a driving circuit, in particular to a piezoelectric ceramic driving circuit, which belongs to the field of piezoelectric ceramic driving. Background technique [0002] Piezoelectric ceramic actuators are mainly based on the inverse piezoelectric effect, which uses piezoelectric ceramics to deform under the action of an electric field to drive actuators to undergo micro-displacement. Due to the advantages of small size, light weight and high strength, piezoelectric ceramics are often used in precision control devices that require high-frequency motion, such as nanoscale systems, high-speed micromechanical systems, scanning probe microscopes, and vibration control systems. Piezoelectric ceramics are characterized by capacitive loads, and high frequency means large loads, which brings a great test to the driving capability of piezoelectric ceramic drive power supplies. [0003] In recent years, there are mainly two types of piezo...

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Problems solved by technology

At present, there is no such systematic discussion specially applied to piezoelectric ceramic actuators, and there is no relevant literature or patent disclosure.

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