Patent ID: 7321216
Filing Date: 2008-01-22
Classification: B62D,H02P,Y10S

Abstract:
1. A motor control apparatus for vector-controlling a DC brushless motor with a motor control CPU based on a motor rotation angle detected by 1-phase excitation 2-phase output type resolver, comprising: a trigger means for outputting a trigger signal based on an excitation signal of the resolver; a holding means for holding at least 2-phase current signals of 3-phase current signals composed of phase U, phase V, phase W for driving the DC brushless motor and cos phase signal outputted from the resolver based on the trigger signal; an acquiring means for acquiring q-axis current instruction value of d-axis, q-axis current instruction values to be converted to the 3-phase current signals; and a determining means that determines whether the motor control CPU is normal or abnormal based on consistency or inconsistency of the polarity signs introduced from the relation based on a predetermined expression among the cos phase signal, the q-axis current instruction value and the 2-phase current signals and outputs its determination result as determination information, wherein the trigger means, the holding means, the acquiring means and the determining means are constituted of a logic circuit functionally independent of the motor control CPU.