| 摘要 |
PURPOSE: To prevent any through current to be generated when switching the currents flowing through motor coils, by providing waiting terms when determining the terms wherein currents are made to flow in a motor and switching the directions of the currents flowing through the motor coils. CONSTITUTION: Respective phase signals (PHA, PHB, PHC, PHD, PHA2, PHB2, PHC2, PHD2) are so outputted from a motor controller 1 as for currents to flow through winding coils L1, L2 in a motor. A region (A) is the term wherein a current of 380-400mA is made to flow through the winding coil L1 or L2, and a region (B) is the term wherein the phase signal PHA, PHB, PHC, or POD is so made to be 'L' as to interrupt the current fed from a power supply and the current is made to flow in the motor only by the energy stored in the winding coil, and further, a region (C) is a waiting term for switching the phase currents of the motor. That is, after the phase signals PHA, PHA2 are made to be 'L' and transistors Q1, Q2, Q3 are brought into OFF, the waiting term is provided before the phase signals PHC, PHC2 are brought into ON. Thereby, any through current is eliminated when switching the phase signal from PHA2 to PHC2. |
