Flexible Gyroscope Integrated Pulse Test And System Calibration

In order to test the pulse signal of Flexible Strapdown Inertial Component and control three axis turntable, this paper designs a measurement and control system that can test static and dynamic performance for Inertial Navigation Components and calibrate system with control computer. USB and FPGA are used to the core of measurement and control system. The firmware, driver and PC application are programmed to complete the function of system design.First of all, the papers discusses the Inertial Navigation Technology, describes the main research works and overall system design requirement, compares the advantages and disadvantages of different design programs, proposes that useing combination of USB and FPGA completes system hardware interface circuit design, and programs the firmware and PC application program.In this paper, the design of measurement and control system is divided into the hardware circuit and software programming. Hardware system uses Altera's FLEX10K, CycloneⅡseries chip and Cypress's EZ-USB FX2 microcontroller chip to build a design platform. The former completes sampling period selection, positive and negative pulse signal polarity selection, filtering, address decoding and count latch function module design. By using I/O interface mode in EZ-USB FX2 chip the pulse signal of Inertial Navigation Component is acquired. The program mainly includes firmware program and PC application program that make EZ-USB FX2 microcontroller work normally. The development environment of the former is KeilμVsion3 software, and PC applications is designed through the Visual C++6.0 software. Through the combination of hardware and software, the design completes the functions of pulse data acquisition, transmission, display, storage and process, and three axis turntable movement control and so on.At the last, the measurement and control system is debugged. The error of experiment is analyzed. The experiment results show that the system functions can achieve design requirement, stability operate, and complete the Inertial Navigation Component test and calibration.