In the fuzzy system, on the other hand, the entire control system are partitioned in several sub-systems in layered structures. For each mode of operation, a special control mechanism can be easily arranged by integrating the partitioned control sub-systems. Therefore, their control is necessarily complicated. While the conventional control is suitable for the control in stable state, it is poor at landing and stopping and so on. Therefore, the control by skilled operator is still much relied on.
Fuzzy control is suitable for such complicated procedures of operations.
The conventional control system is usually designed based on the difference between a given targeted value and the real output. Hence the control become difficult when the targeted values are not given explicitly or exactly. Even in such cases, fuzzy logic control can be constructed and work well for the designed purposes. This kind of control has not been possible using conventional control methodology. In fuzzy logic control, since the entire control system are written and are integrated in language easily understood, it is most suitable for the realization of control based on the language instruction.