Characteristic Analysis of Newton Method and Analytical Method in Temperature Computation of Pt100 Platinum Resistor
Zhang Li · Modern Electronics Technique · 2010
The application characteristic of Newton method and analystic method is analyzed for the problem of temperature-resistance computation of Pt100 platinum resistor.The absolute accuracy and relative operating speed of both methods are compared under the condition of VC6.0 program.The results show that Newton method has higher calculation accuracy and faster operation speed than analytical method.Although analytical method has no any modeling error theoretically,it shows a severe numerical calculation error in practice.Therefore,Newton method is an appropriate algorithm for the temperature computation of Pt100 platinum resistor.It has a widely application value in the industry control domain.