2 results about "Phase adjustment" patented technology

The present invention provides a motor control device, which realizes desired high-accuracy advanced angle control of brush-less DC motor with simple and low-cost structure. In the motor control device, a phase adjusting circuit is provided, which is composed of a combined circuit of resistances (R1-5) and diodes (D1-4), and processes the speed instruction into voltage similar to fold lien of optimum phase angle control characteristic corresponding to speed of the brush-less DC motor to form phase angle signal, and by adjusting the combination of resistances (R1-5) and diodes (D1-4), the speed instruction is processed into voltage similar to fold lien of optimum phase angle control characteristic corresponding to speed of the brush-less DC motor to form phase angle signal of the voltage corresponding to the optimum phase angle control characteristic, and execute high-accuracy advanced angle control for phase of power supply of the brush-less DC motor according to the phase angle signal.