| 摘要 |
PROBLEM TO BE SOLVED: To provide a brushless motor and electric power steering device capable of achieving little motor torque variations and cost reduction.SOLUTION: Based on an energization phase signal Sp which is output from a rotation phase sensor 50 and in which an output changes for each predetermined rotation phase corresponding to a gradual change (increase or decrease) of a rotation phase, a phase current Ip running through each phase coil 20 is switched, and the magnitude of the phase current Ip energizing each phase coil 20 is changed so that an actual motor torque Tmr detected by a torque sensor 34 meet a target motor torque Tmt.SELECTED DRAWING: Figure 4 |
