Motor control apparatus and motor control method

Details Motor control apparatus and motor control method Motor control apparatus and motor control method

2006-05-09

2006-05-09

Duda, Rina (Department: 2837)

Electricity: motive power systems

Induction motor systems

C318S603000, C318S432000, C318S661000, C318S254100, C318S605000

Reexamination Certificate

active

07042190

ABSTRACT:
A control device measures time intervals T1to T12from the reference time until when each of the rotational angles θbn1, θbn2output from each of resolvers becomes n×60 degrees (n=1 to 12, i.e., 60 degrees to 720 degrees). Then, the control device calculates a deviation angle Δθn at each of the rotational angles at the intervals of 60 degrees by calculating T1/T12to T11/T12using the measured T1to T12. By substituting the calculated deviation angle Δθn into an equation, n×60°+Δθn (n=1 to 11), the control device corrects the rotational angles at the intervals of 60 degrees. The control device generates each of drive signals DRV1, DRV2using each of the corrected rotational angles, and outputs each of the drive signals DRV1, DRV2to each of inverters. The inverters drive each of AC motors (M1, M2) based on each of the drive signals DRV1, DRV2.

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