Piezoelectric actuator blocking force measuring device and method

Abstract

The invention provides a piezoelectric actuator blocking force measuring device and method. The system comprises an external frame, an actuating component arranged in the external frame, a force-sensitive component, a displacement control component, a piezoelectric actuator to be detected, an actuator connection component and a connection spring, wherein the force-sensitive component, the displacement control component, the piezoelectric actuator to be detected, the actuator connection component and the connection spring are sequentially connected to the lower end of the actuating component and arranged in the external frame. One end of the connection spring is connected with the external frame, and an adjusting bolt penetrates through the lower end of the external frame and is connected with the connection spring to be used for adjusting the position of the connection spring and being connected with the actuator connection component and fixed. A first displacement sensor and a second displacement sensor are located outside the external frame, arranged on the two sides of a displacement control component and connected with the input end of a controller. The output end of the controller is connected with the actuating component. The invention further discloses the measuring method. By means of the piezoelectric actuator blocking force measuring device and method, the problem that the blocking force of an existing piezoelectric actuator cannot be measured is solved, the blank of the measuring technology is filled, and the piezoelectric actuator blocking force measuring device and method have the advantages of being high in measuring precision, good in stability and convenient to use.

Description

technical field [0001] The invention relates to a measuring device, in particular to a thrust force measuring device and a measuring method of a piezoelectric actuator. Background technique [0002] In recent years, with the rapid development of micro-nano technology, micro-displacement piezoelectric actuators have been widely used in the technical fields of optics, electronics, aviation, aerospace, machinery manufacturing, medicine and genetic engineering. Due to the stiffness of the piezoelectric actuator itself, the output force of the actuator will vary with the output displacement: when the output displacement is 0, the external output force can reach the maximum value. At this time, the force on the actuator (which is numerically equal to the external output force) is called the blocking force (Blocking Force) of the actuator. This force is generally used to measure the ability of the actuator to output force. But there is no measurement system directly used to measur...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to fill the gap in the above-mentioned measurement technology, to provide a piezoelectric actuator thrust force measurement device and measurement method, which solves the problem that the current piezoelectric actuator thrust force cannot be measured, and has the advantages of high measurement precision, stable Good performance and easy to use

Images