Analysis and simulation of effects of adc resolution on pid controller using lab view
Summary :
Table of Contents
- Abstract
- Introduction
- RTD design in labview
- Block diagram of RTD sensor
- Signal conditioning circuit
- ADC and DAC
- PID implementation in labiew
- PID controller
- Simulation and analysis results
- Proportional gain
- Integral gain
- Conclusion
- Bibliography
Abstract
The aim of this paper is to show the effect of adc resolution on plant dynamics. To realize this, Virtual Instrumentation has been developed using Labview environment and the process dynamics are analyzed and visualized using different bit adc's. In lab view for simulation purpose temperature transducer has been designed and its output after signal conditioning is given to adc. Under different adc resolution pid controller output is observed. The output of pid controller is integrated and the area under the curve is calculated. It has been observed that as the bit resolution of adc increases, the steady state error and the noise level reduces.
Keywords: Labview(Laboratory Virtual Instrumentation Engineering Workbench), adc (Analog to
Digital Converter), RTD (Resistance Temperature Detector), pid controller (Propotional
Integration Derrivative controller),ts (settling time)
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