A controller includes a switching control coupled to switch a power switch of a power converter to regulate an output of the power converter. The representative speed is sensibly determined and reliable information is supplied because the fuzzy inference’s performance is based on the information collected from the signal transmitter and based on the factors which can affect the traffic conditions. 0 and n is a number from 0 to 2. The compounds are suitable for the treatment of fatty acid metabolism and glucose utilization disorders, disorders relating to insulin resistance are involved as well as demyelinating and other neurodegenerative disorders of the central and peripheral nervous system.