Design Of Rotor Gyroscope Measurement And Control System Based On LabVIEW

The rapid development of inertial devices directly leads to the research and design of the structure and interface circuit of the world. In the present market, there are a series of problems in the structure of the rotor gyroscope, such as high accuracy,stability and so on. we have proposed a new type of rotor gyroscope structure ball disc rotor gyroscope structure in the MEMS center of Harbin Institute of Technology. In the optimization of the structure of the gyroscope and the change of peripheral circuit, it is necessary to design a measurement and control system for the structure to evaluate and measure the rotation of the disc- rotor- type gyroscope. In this paper, the design of a control system to realize the dish ball rotor gyroscope signal acquisition, thus better analysis of the current structure of the gyroscope is able to reach the expected accuracy and stability of the and the acquired signals in real time for analysis and processing.The aim of this paper is to design a to disc ball- rotor gyroscope design a can real-time gyroscope signal acquisition, the gyro signal for filtering, FFT and analytic signal component of a gyroscope signal acquisition system and a can of gyro driving circuit for input input system for a specified carrier frequency, the two together is the subject of the so-called measurement and control system. The series of card of C of NI(National Instruments Co. Ltd.) compact Rio device and NI9063, NI9039 etc. as a collection of hardware environment, and the Lab VIEW software to build a measurement and control system can through the PC to control and display. Through the construction of the Labv IEW algorithm to achieve FFT, as well as the filter to achieve the gyro signal acquisition and analysis. Then the results of the analysis are combined to provide a direction for the structural design of the gyro’s detection circuit and gyro structure.In experimental design and we use DMA FIFOs technology to implement the asynchronous relationship between FPGA case data and the compact Rio device, realize the data stored in the read, and use the TCP-IP protocol to realize the data transfer between Ni hardware equipment compact RIO and PC machine, in the PC, due to differences in acquisition speed and processing speed, the use of the producer consumer structure to deal with the differences in the speed of data flow in the main loop and cycles. Followed by Lab VIEW configured CRIO 9114 FPGA chassis simulation waveform output, output to meet the gyroscope’s driving circuit of the carrier wave, the applied to the gyro driving circuit driven gyro rotation, and through the back of the acquisition system will gyroscope signal acquisition and processing.The gyroscope’s driving circuit of the carrier signal and using the CRIO output analog waveform to be used as driving circuit of the carrier signal of gyro signal is analyzed with different speed gyroscope signal cracks on the use of a waveform generator, the former signal noise is relatively large, the signal-to-noise ratio at around 120 and with the increase of rotational speed decreased significantly. The latter signal noise is relatively small, the signal to noise ratio is about two times of the former, and with the rising speed of the signal to noise ratio is smaller.This shows that the output of the carrier signal using CRIO allows rotation of the gyro more stable, so as to achieve better gyroscopic effect.