Studies on a PC-based Fuzzy and Non-fuzzy On-Off Controller for a Temperature Process

A PC-based study has been made on conventional on-off control and its corresponding fuzzy version for a small temperature process. It is observed that fuzzy control of temperature offers smoother control than the conventional one. The fuzzy control has been effected by using one and two variables. However, it is observed that for such a process, introduction of two variables in fuzzy logic mode of control does not impart any significant improvement over its single variable counterpart. Performance of the process in different modes is elaborated with the help of relevant curves.