A high load and low loss inertia type superconducting magnetic levitation micro force measuring device

Abstract

Disclosed in the present invention is a high-load and low-loss inertial superconducting magnetic suspension micro-force measurement device, comprising a refrigerating machine, a thermal shield, a sample rack, a superconducting array, an adapter flange, a mounting platform, a rack, a vacuum housing, a permanent magnetic floating platform, a rotational speed sensor, a damper and an electromagnetic bearing; the vacuum housing provides necessary vacuum working conditions for the refrigerating machine, and the two-stage GM refrigerating machine cools the superconducting array, so that the temperature of the superconducting array is far below a critical temperature, greatly improving the superconducting performance thereof, thereby improving the suspension stability. The electromagnetic bearing is used for unloading, and a superconducting bearing provides a horizontal constraint force to maintain suspension stability; during measurement, the whole measured thrust system is in a suspension supporting state, which completely eliminates interferences from the self-weight of a thruster, a propellant and an internal force generated during a power supply process, and realizes accurate measurement of a micro-force.

Description

technical field [0001] The invention relates to the fields of micro-force measurement and high-temperature superconducting magnetic levitation, in particular to a high-load and low-loss inertia type superconducting magnetic levitation micro-force measuring device. Background technique [0002] In recent years, micro-satellite technology has developed rapidly, enabling it to continuously realize various technical verifications and innovative applications in different fields. Micro-thrusters, as the main components to ensure high-precision control of micro-satellites, are also constantly developing. The ground thrust measurement of micro thrusters is the most critical part in its research and development process, and the precise measurement of tiny forces can provide the necessary reference data for its design improvement, parameter selection and performance evaluation. However, the ground thrust measurement technology of the microthruster is relatively complicated, and the ga...

AI Technical Summary

Problems solved by technology

The single pendulum type has the simplest and most stable structure, but its sensitivity is generally lower than other types. The only way to improve its sensitivity is to extend the force arm, which is very important for a small measurement space (such as a vacuum chamber). Difficult to achieve

Different from the single pendulum thrust stand, the vertical pendulum thrust stand can use the weight of the thruster to amplify the displacement caused by the thrust, which can improve the sensitivity, but its stability will also deteriorate, so this kind of thrust stand is usually used In the measurement environment with limited space but high sensitivity requirements

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