Research Since The Gate Displacement Sensor Error Correction Method And The Experimental System

Precise measurements of the critical development of modern industrial society, only more accurate measuring instruments in order to improve manufacturing precision manufacturing industry. The precision instrument calibration very important in the field of precision measurement, not only can improve the measurement stability also can improve the measurement accuracy of the instrument. Self-tuning technology as the quality assurance of measuring instruments and measurement science a new technology, more and more popular in modern precision measurement, metrology field.Self-correction technique of measuring instruments in the absence of a standard mother Miriam’s case, according to the sensing principle of the sensor, the error in the form of performance characteristics and measurement systems characteristics to achieve to improve the measurement accuracy. The subject of time grid for the needs of high-precision angular displacement sensor calibration mother Miriam, the prolonged use of such issues needs to be corrected again. According sensing principle and error characteristics of time grid angular displacement sensor design a grid-type angular displacement sensor for error correction method and self-test system. Experiments show that this system can achieve error parameter identification and error compensation sensor solves time grid angular displacement sensor compare calibration and a field calibration and other issues.In this study funded by the National Natural Science Foundation of China, according to the study made the following question:1. According to the sensing principle and structure characteristics of electromagnetic sensors, analysis of error characteristics of the sensor, and the correlation error for error separation and non-correlated errors, according to this feature presents a time grid-type displacement sensor self-calibration method.2, Simulation analysis 71 pairs of poles and 72 pairs of poles characteristics of the time grid displacement sensor error, through theoretical and simulation data design experimental system.3, 3. Put forward system solutions, hardware design, FPGA control circuit program, drawing board hardware, installation and commissioning test system platform.4, Improving and optimizes the experimental program to improve the accuracy of the system excitation signal and improved data encoding and transmission forms, improve the stability of the data, to achieve real-time data acquisition and efficient handling.5, Calibrated the time grid and the grating is verified by comparing the time grid angular displacement sensor self-calibration method is correct and feasible.In summary, this paper study self-correction method for time grid displacement sensor error characteristics, design and development of self-correction system, through design optimization and improvement, successfully developed a time grid sensor systems with self-correction function, prove self correction feasibility of the theory, improve the measurement accuracy of the sensor.