| 摘要 |
<P>PROBLEM TO BE SOLVED: To propose a technique for suppressing the unbalance of torque, at the occurrence of idling slide. <P>SOLUTION: A main motor signal switch 220 computes a magnetic flux component current feedback value I<SB>d</SB><SP>*</SP>, a torque component current feedback value I<SB>q</SB><SP>*</SP>, and a rotor angular frequency ω<SB>r</SB><SP>*</SP>in a motor, based on a motor current and rotor angular frequency on the second axis, with the second axis being the rearmost axis in the direction of progress as a reference axis, if the present running state is power running. If the present running state is braking, a main motor signal switch 200 computes a magnetic flux component current feedback value I<SB>d</SB><SP>*</SP>; a torque component current feedback value I<SB>q</SB><SP>*</SP>; and a rotor angular frequency ω<SB>r</SB><SP>*</SP>in a motor, based on a motor current and rotor angular frequency on the first axis, with the first axis which iis the axis closest to the front in the direction of progress as a reference axis. <P>COPYRIGHT: (C)2010,JPO&INPIT |
