Throttle and AC motor control throughout shifts of multi-speed transmissions

摘要

The problem of losing throttle control when controlling an AC motor throughout transmission shifts has been solved for a finite set of discrete waveforms. The solution requires making as many discrete speed waveform tables as there are gear ratios in the transmission. Each table has speed entries appropriate for controlling acceleration and deceleration while in its selected gear ratio. In addition when a new gear ratio is selected a transition to the new table with a changed motor rpm can be done with the throttle unchanged. This provides a smooth control for both manual and automatic transmissions.