Power of Built-In Heater at the Cooling Stage in Welding Polyethylene Pipe at Low Ambient Temperatures
摘要
Abstract
A method is proposed for determining the power of the built-in heater in welding polyethylene pipe at low ambient temperatures; this approach is based on solving the inverse control problem. In determining the heater power, weighting factors and temperature specifications may be selected so that the dynamics of the final welding boundary within the thermal influence zone corresponds to normal welding.