A method of dynamic error reduction for a sensor with first order lag using a digital convolution integrator

  • Kubota, Nobuhisa (Kyushu Kyoritsu University, Faculty of Engineering, Dept. of Electrical Engineering) ;
  • Mine, Katsutoshi (Kyushu Kyoritsu University, Faculty of Engineering, Dept. of Electrical Engineering) ;
  • Doi, Masanori (Ube Technical College, Dept. of Electrical Engineering)
  • Published : 1993.10.01

Abstract

This paper describes a new method of dynamic error compensation, using a digital convolution integrator and two digital low pass filters. In this method, the process of compensation consists of three steps. First, sampling and digitizing of input signal, second, removing the noise in sampled data by the low pass filter and third, making a convolution integral using the output data of low pass filters. This method showed a good experimental result of reducing dynamic error even if there was a slight noise in the input signal. As a result, the detecting time constant of resistance thermo-bulb was improved to about 1/10th.

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