Learning fuzzy logic control: an indirect control approach

A systematic methodology for the design of a learning fuzzy logic control system is presented. The basic design idea is an indirect control approach where selection of control parameters relies on the estimates of process parameters. The control law consists of three components: an online fuzzy identifier, a desired transition model, and a fuzzy controller. The fuzzy version of the signal Hebbian learning law is introduced for adaptively identifying the process relation of the unknown plant. The desired transition model is constructed so that the control designer´s goal can be achieved. A computationally efficient way to construct the transition model is provided via a forward-in-time method based on the concept of truncated policy space. Clear trade-offs between control performance and computational complexity are obtained