Acceleration measurement method based on anti-magnetic suspension mechanical system

Abstract

The invention provides an acceleration measurement method based on an anti-magnetic suspension mechanical system, and the method comprises the steps of 1, obtaining an external acceleration a; 2, constructing an acceleration sensitive module, and suspending a diamagnetic mass body by using a magnetic potential well to obtain the position movement delta x of the diamagnetic mass body caused by the external acceleration a; 3, constructing a position measurement module, and realizing the conversion from laser light intensity change delta I to the voltage delta V; and 4, calculating the actual external acceleration a according to the variation of the output measured voltage delta V. According to the invention, an anti-magnetic suspension acceleration sensitive mode is provided, the anti-magnetic suspension mechanical system is different from the existing suspension system, optical suspension, electrostatic suspension, superconducting suspension and the like in the physical principle, does not need the external energy input compared with the electrostatic suspension and the optical suspension, has the lowest parameter noise, reduces the main noise source limiting the acceleration sensitivity, and meanwhile, compared with the superconducting suspension, the anti-magnetic suspension mechanical system can work in a room-temperature or low-temperature environment.

Description

technical field [0001] The invention relates to the technical field of acceleration measurement, in particular to an acceleration measurement method based on an anti-magnetic levitation mechanical system. Background technique [0002] High-precision accelerometers are the core technology for applications such as inertial navigation and gravity measurement. Current accelerometers include cold atom accelerometers, neutron accelerometers, quartz accelerometers, suspension accelerometers, MEMS accelerometers, optical Mechanical accelerometer, optical levitation accelerometer, levitation accelerometer, etc. Among them, the suspension accelerometer has the highest precision in principle, and its core is a mass body suspended by an electromagnetic field. According to the general theory of relativity, acceleration will cause the movement of the suspension body position. By measuring this position, the acceleration can be measured. To achieve perception, the suspension accelerometer...

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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a method for measuring acceleration based on the anti-magnetic levitation mechanical system, so as to solve the problems raised in the above-mentioned background technology. By proposing anti-magnetic levitation acceleration, the present invention is different from existing ones in physical principle Some suspension systems, such as optical suspension, electrostatic suspension, superconducting suspension, etc., have the highest absolute sensitivity, and compared with electrostatic suspension and optical suspension, they do not require external energy input, have the lowest parameter noise, and reduce the limit acceleration sensitivity In addition, the proposed anti-magnetic levitation acceleration does not need to rely on the low temperature environment, can independently and effectively reduce the system power consumption, and meets the characteristics of working at room temperature or low temperature environment at the same time, which solves the problems in the prior art

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