Adaptive control and fault-diagnosis implementation using an industrial computer system

An industrial platform, which consists of a programmable logic controller and an industrial computer, is used in implementing a practical controller. The controller integrates a pole-placement self tuner with a fault diagnosis scheme. Numerical algorithms are programmed using relay ladder logic (RLL). Functions such as tuning, monitoring, and reporting are provided via the industrial-computer man-machine interface. Experimental results indicate the feasibility of utilizing a PLC with advanced hardware and software facilities to implement complex control functions.