Stepping motor drive device and method

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

2006-10-31

2006-10-31

Fletcher, Marlon T. (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

C318S696000, C318S599000, C318S811000

Reexamination Certificate

active

07129671

ABSTRACT:
A reference signal generation unit110agenerates a reference signal VCA representing a limit indicator. Under the control of a PWM control unit120a, a bridge rectification circuit130acontrols the current supplied to a coil19ato the limit indicator, using a current chopper method. Therewith, the circuit130aimplements synchronous rectification where transistors10and12are brought into conduction when the current supply is stopped, forming a closed circuit with the coil19a, and a regenerative current circulates in the closed circuit. During a time period when the reference signal is decreasing relatively rapidly, a SR prohibition unit115aprohibits the transistor10or12from being brought into conduction when the current supply is stopped, and thereby the decay of regenerative current is accelerated.

REFERENCES:
patent: 6114826 (2000-09-01), Nishiura et al.
patent: 6529390 (2003-03-01), Takahashi
patent: 6778417 (2004-08-01), Itakura et al.
patent: 6838853 (2005-01-01), Matsunaga et al.
patent: 6873126 (2005-03-01), Inao et al.
patent: 6906489 (2005-06-01), Fukamizu et al.
patent: 2004/0232874 (2004-11-01), Fukamizu et al.
patent: 2005/0047185 (2005-03-01), Yokouchi
patent: 2005/0146303 (2005-07-01), Fukamizu et al.
patent: 06-343295 (1994-12-01), None
patent: 09-172799 (1997-06-01), None
patent: 10-080194 (1998-03-01), None
patent: 11-289797 (1999-10-01), None
patent: 2000-069794 (2000-03-01), None
patent: WO 03/030349 (2003-04-01), None
Xuqiang et al., “How to Select Electrical Control IC Lecture 20: Microstepping Motor Driver Chip A3977 with Built-In Transistor”, Micromotors, vol. 35, 2002, Issue 4.
Tao,et al., “Full-Bridge PWM Microstepping Motor Drive A3955S”, Journal of Anhui University Natural Science Edition, Jun. 2003, vol. 27, No. 2.
Hong et al., “Application of CPLD in Two-phase Hybrid Stepping Motor Systems”, Electric Drive, 2001, Issue 4.

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-3628966