Adaptive identification and PSD controller implementation into 8-bit microcontroller

Abstract

An application and an implementation of an adaptive identification and of Takahashi PSD controller are described in this article. The application is based on 8-bit HCS08 microcontroller (DZ family) from Freescale semiconductor. This family is intended for automotive application, and also for general purposes. Except the microcontroller, a power part and analog part of circuit was used for measure and converting a thermocouple temperature; it is directly measured inside the heater. This system is designed for fast temperature control of soldering precise tips. The controlled system is identified during heating process by the recursive least square method at the beginning of control process and on demand of user (when the tip is replaced by other type). The hardware was designed to save space and to minimize power loses on switching transistor. It leads to have the transistor without heatsink. The transistor was selected from PowerTrench family with an extremely low rDS(ON) resistance. © 2016, North Atlantic University Union. All rights reserved