| 摘要 |
To provide a motor drive control device which, in a brushless motor, can drive the motor to rotate even when trouble has arisen in a position detection sensor. A motor drive control device (1) that controls the driving of a brushless DC motor (51) having a stator (52), a rotor (53) and Hall ICs (54u to 54w) is equipped with an abnormality detecting unit (2) and a drive voltage generating unit (7). The abnormality detecting unit (2) detects abnormality of each of position detection signals (Hu to Hw). When abnormality of at least one of the position detection signals (Hu to Hw) has been detected by the abnormality detecting unit (2), the drive voltage generating unit (7) generates and outputs to the brushless motor (51) drive voltages (SU1 to SW1) for driving the brushless motor (51) on the basis of at least one of the remaining position detection signals (Hu to Hw) excluding the position detection signal (Hu to Hw) that has been detected as abnormal. |
