Integrated nuclear magnetic resonance gyroscope temperature closed-loop digital control system

Abstract

The invention discloses an integrated nuclear magnetic resonance gyroscope temperature closed-loop digital control system, which comprises a temperature measurement module, an FPGA module, a DSP module, a signal generation module, a power amplification module, and a heating film module. The temperature measurement module reads the resistance of a high-precision temperature measurement resistor, and converts an analog signal into a digital signal. A signal interface module transmits the digital signal to the FPGA module. The FPGA module sends the data to the DSP module. The DSP module processes the input signal according to an established control algorithm, generates a control signal, and sends the control signal to a digital-to-analog conversion module. A DDS signal modulation module modulates the control signal, and generates a signal meeting the signal waveform and amplitude requirements. The power amplification module applies the signal to the two ends of a heating resistor. Thus, high-precision temperature control on an alkali metal chamber is realized. The system has very high temperature control precision, is of great significance to improving the indexes of gyroscopes, such as reducing the drift of gyroscopes and increasing the signal-to-noise ratio, and promotes the miniaturization and integration of a nuclear magnetic resonance gyroscope control circuit.

Description

technical field [0001] The invention relates to an integrated nuclear magnetic resonance gyroscope temperature closed-loop digital control system, which is used for high-precision temperature control of the core sensitive device alkali metal gas chamber of the nuclear magnetic resonance gyroscope. Suitable for high-precision and small-sized nuclear magnetic resonance gyroscope prototypes, the control device is also suitable for atomic gyroscopes such as SERF atomic spin gyroscopes and nuclear magnetic resonance gyroscopes, as well as high-precision temperature closed-loops of SERF atomic magnetometers and nuclear magnetic resonance magnetometers control. Background technique [0002] The gyroscope determines the cost and accuracy of the inertial navigation system. The nuclear magnetic resonance gyroscope has the advantages of high precision and small size, which can meet the urgent needs of the development of a new generation of high-tech weapons and equipment. At the same ...

AI Technical Summary

Problems solved by technology

[0006] The invention focuses on solving the problem that the high-precision control of the temperature of the nuclear magnetic resonance gyroscope relies on large-scale commercial instruments and is difficult to miniaturize and integrate

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