Experiments on Temperature Control Using On-Off Algorithm Combined with PID Algorithm

Abstract

The paper presents an automated system for the temperature control using a PIC microcontroller, a digital temperature sensor with I2C and a MOSFET as actuator. The control strategy is a proportional-integrative one, preceded by an on-off algorithm. The most important data is presented on a graphical interface. In order to send the parameters of the process and the command states to the computer, the serial communication is used.

Protocol for building a user-friendly temperature control system to support microscopes, microfluidic chambers, and custom incubators

“…13 , 14 Finally, it sends the calculated output to the Metal Oxide Silicon Field Effect Transistor (MOSFET), which acts like an analog switch to control the heating elements. 15 As electricity flows through the flexible polyimide Nichrome heating elements, the heating block gradually reaches and maintains the desired temperature. 16 …”

Discontinuous Control Analysis and Design for Temperature Control of Thermal System

“…In general, thermal physical systems are considered as slow processes and their models are commonly described using first order models. For that reason, it becomes cost inefficient to implement complicated control schemes and high precision temperature control can be achieved using less sophisticated control algorithms and even an on/off mechanisms can achieve the desired performance [8,9,10].…”

“…An experimental work on temperature control using on-off algorithm combined with PID algorithm was introduced in [13] where the tuning parameters of the PI controller are calculated using the Ziegler-Nichols criteria, available for the slow processes with one time constant and delay time. In turn, these parameters are obtained by offline identification, using the Cohen-Coon graphical method.…”

Experiments on temperature regulation using a Peltier element and PID technique

“…A temperature is easier to measure accurately, and the quality of the regulation can be accessed, but the experimenter has to wait longer for results. Examples of such experiments on temperature regulation, for heating only, are given in [5,6], and the design procedure for selecting adequate operating parameters for the PID regulator is provided in [7]. Heating elements are used in apparatuses described, and these can only elevate the temperature of an object above the surrounding temperature.…”