Phase transition water cooling temperature control principle based ultra-magnetostriction microdisplacement driver

Abstract

The present invention discloses a giant magnetostrictive micro displacement drive device based on the principle of temperature control by phase change water cooling. The current is used for controlling the drive device to output the displacement and through the coordination of the phase change temperature control device and the water cooling circulating device, the inside heat of the drive is brought to the outside environment to suppress the temperature increasing of the drive and heat output error to improve the control precision of the displacement output. The drive of the invention has the advantages of simple structure, relatively small drive current, stable operation and good frequency response, and combines the advantages of the phase change temperature technique and water cooling temperature control technique to perform long-time temperature control and suppress the heat output error effectively, without establishing a complex mathematical model. Consequently, the control precision of the displacement output can reach the micron grade or higher and the device can adapt to various poor working conditions. At the same time, the device has the advantages of small volume, light weight, large output force and highly precise displacement, can suppress the influence of the thermal deformation on the output displacement of the drive and can be used in the fields of ultraprecise machining and vibration control.

Description

technical field [0001] The invention relates to a driving device, in particular to a giant magnetostrictive micro-displacement driver based on the principle of phase-change water-cooled temperature control. Background technique [0002] Micro-displacement actuators have been widely used in ultra-precision machining, robotics, fluid machinery, vibration control, sonar systems and other fields. At present, the most widely used types are mechanical, hydraulic and piezoelectric. The frequency response of mechanical and hydraulic drivers is low, the output force is small, and the output displacement is difficult to meet the high-precision requirements; although the displacement resolution and frequency response of piezoelectric drivers are relatively high, but the output is small, it is easy to produce electrical breakdown, and Drift will occur. The giant magnetostrictive micro-displacement driver has the advantages of large displacement, strong force, fast response, high reliab...

AI Technical Summary

Problems solved by technology

Due to the closed internal space of the driver, the heat dissipation performance is poor, especially in the high-frequency and high-current working state, the temperature will rise rapidly and the thermal error will be significant, but the existing technology is too complicated to compensate the thermal error of the driver, and it is difficult to realize

Images