DEVICE AND METHOD FOR CONTROLLING PRIME MOVER

摘要

A method of controlling a prime mover, comprising the steps of, when the angular acceleration (alpha) of the rotating shaft of a motor connected to a drive shaft exceeds a threshold (alpha slip) showing a slip, limiting the torque of the motor by setting an upper torque limit value (Tmax) by using a map having such a relation that the larger the angular acceleration (alpha) becomes, the smaller the upper toque limit value (Tmax) becomes so that the upper torque limit value (Tmax) is kept at a value obtained when the angular acceleration (alpha) becomes a peak due to the slip, calculating the time integral of the angular acceleration (alpha) in an integration period from a time when the angular acceleration (alpha) exceeds the threshold (alpha slip) and a time when the angular acceleration (alpha) lowers below the threshold (alpha slip) by the limitation of the torque of the motor, and when the slip can be deemed to be converged by the limitation of the torque of the motor, returning the torque limited by the upper torque limit value (Tmax) at the time of the peak of the angular acceleration (alpha) by using the upper torque limit value calculated based on the results of the integration calculation of the angular acceleration (alpha).