| Summary: | 碩士 === 國立勤益科技大學 === 電子工程系 === 98 === The research goal of this paper is to implement a high-precision magnetic scale measurement system. The magnetic scale measurement system is based on the feedback of signal to process signal and compensation. The system uses TI's TMS320F2801 DSP chip as the controller. The orthogonal sinusoidal signals are converted into digital signal output by using A / D converters of the DSP chip, in which the output signals are amplified through the amplifier due to the small SIN/COS amplitude of the magnetic field signal, about 50mV. The signal instability phenomenon, which is caused by the noise amplified at the same time, can reach to a stable state by adding filters to filter out noises and compensating the signal during the signal resolution. The stable signal is then processed by the fine segmentation to make the position feedback system meet the demand for high precision. In addition to having a high-precision position feedback, this system, which meets the industry demand, can not only replace the more expensive and environment -restricted optical measurement, but also will be beneficial and more widely accepted for industrial applications.
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