Stepping motor driver

Details Stepping motor driver Stepping motor driver

2005-02-01

2005-02-01

Martin, David (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

C318S696000, C318S700000, C318S701000, C318S714000, C318S720000, C318S721000, C318S722000, C318S723000, C318S724000

Reexamination Certificate

active

06850027

ABSTRACT:
The stepping motor driver comprises an inverter for feeding stepped currents to windings of a stepping motor, a position detector for obtaining a detected angle of a rotor of the stepping motor and a current controller for controlling the inverter. In a d-q rotational coordinate system in which the d-axis is in the direction of the magnetic flux of the rotor and the q-axis is in the direction perpendicular to the d-axis, an excitation angle for a winding is determined from a d-axis component and a q-axis component of a command current to the winding, a lead angle control signal is computed from the excitation angle, and a phase of an applied voltage to the stepping motor is controlled using the lead angle control signal.

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Sheng-Ming Yang and Pei-Der Su, 2001, IEEE PEDS, pp. 749-754.

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