Flexible gyro digital rebalancing device based on DSP

Abstract

The invention discloses a flexible gyro digital rebalancing device based on DSP. The device comprises a gyro assembly and a digital signal processor; wherein the gyro assembly comprises a gyro, a motor, an X torquer, an X sensor, a Y torquer and a Y sensor; the digital signal processor comprises an A / D convertor, an X-PWM generator and a Y-PWM generator; the gyro is connected with an input circuit, the X sensor and the Y sensor are respectively connected with the A / D convertor inside the digital signal processor through an X error identification circuit and a Y identification circuit; the X-PWM generator and Y-PWM generator inside the digital signal processor are respectively the X torquer and the Y torquer through an X pulse current control circuit and a Y pulse current control circuit; the digital signal processor is connected with the motor in the gyro assembly through a motor power supply control circuit; the digital signal processor is provided with a communication interface. In the invention, signal error of the gyro sensor is directly acquired, thus fundamentally removing non-linear error of the gyro torquer.

Description

technical field [0001] The invention relates to a rebalancing device, in particular to a DSP-based flexible gyro digital rebalancing device. Background technique [0002] Inertial navigation is an important technical discipline, and it is one of the key technologies for many aircraft, ships, missiles and other carriers to successfully complete navigation and control tasks. In recent decades, inertial navigation technology has developed rapidly. In my country, inertial navigation technology has been applied in the navigation and positioning of aviation, aerospace, navigation and land vehicles. Because the strapdown inertial navigation system has many advantages compared with the platform type inertial navigation system, it has also received more and more attention from various countries. [0003] At present, the domestically produced power tuning gyroscope has reached a relatively high level of technology, but the rebalancing circuit matched with the power tuning gyroscope i...

AI Technical Summary

Problems solved by technology

Therefore, once the parameters of the calibration link change due to the drift of the resistance and capacitance values, it will directly affect the performance of the entire instrument; because the working environment of the rebalancing circuit is complex and changeable, the temperature characteristics and nonlinearity of the gyro torquer , the error of analog signal transmission, and the accuracy of A / D conversion directly affect the final measurement accuracy. Conventional control schemes are sometimes difficult to meet their performance requirements, and it is already quite difficult to improve the accuracy.

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