A new acceleration control scheme for an inverter-fed induction motor

The new acceleration control scheme aims to give an inverter-fed induction motor excellent dynamic performance by using an on-line inference controlle r. lit every time interval of the control process, the acceleration increme nts produced by two different voltage vectors are compared, yielding one op timum stator voltage vector that is selected and retained. The on-line infe rence control is built using a production system and some heuristic knowled ge about the relationship between the motor voltage and acceleration Becaus e integral calculation and motor parameters are not involved, the new contr oller has no accumulation error of integral, as in the conventional vector control schemes, and it can be used for different induction motors without modification.