Stepping motor drive device and method

Details Stepping motor drive device and method Stepping motor drive device and method

2005-01-04

2005-01-04

Masih, Karen (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

C318S696000, C318S599000, C318S811000

Reexamination Certificate

active

06838853

ABSTRACT:
A reference signal generation unit integrates a staircase signal, to produce reference signal VCTA whose waveform has no abrupt changes in level and which shows a current limit value. A PWM reference signal generation unit generates a PWM reference signal. A supply current measurement unit measures a supply current to a coil. A PWM control unit compares reference signal VCTA with the measurement value of the supply current measurement unit in each period of the PWM reference signal, and sets each transistor in a bridge rectification circuit in a conducting state or a nonconducting state according to the comparison result. In this way, the supply current to the coil is controlled to approach the current limit value shown by reference signal VCTA.

REFERENCES:
patent: 6574520 (2003-06-01), Liu et al.
patent: 06-343295 (1994-12-01), None

Affiliated with

Also associated with

Rating

Stepping motor drive device and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stepping motor drive device and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stepping motor drive device and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3375616