Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
Patent
1999-10-06
2000-07-25
Witkowski, Stanley J.
Electricity: motive power systems
Reciprocating or oscillating motor
Energizing winding circuit control
318254, 318432, 318434, 318439, 361 23, 361 24, 361 31, 361 33, 361 87, 361 91, H02K 2900
Patent
active
060940212
ABSTRACT:
In a motor drive apparatus, a motor drive circuit includes an H bridge circuit composed of four field effect transistors or FETs, and resistors each having electrical resistance sufficiently higher than that of each of the FETs which would be presented when the FET has an ON-state trouble. These resistors are connected in parallel to the respective FETs. To perform a ON-state trouble detecting test on the individual FETs, an OFF signal is fed to all the FETs. If all the EFTS are free of the ON-state trouble, electric potential, representing a result of higher potential of a battery being divided by the resistors, appears at two input terminals of an electric motor connected to the motor drive circuit. If two of the FETs, having their drains connected to a higher-potential electrode of the battery, have the ON-state trouble, the higher potential of the battery appears at the two terminals of the electric motor. If the other two FETs, having their sources connected to a lower-potential or ground electrode of the battery, have the ON-state trouble, the lower or ground potential of the battery appears at the two terminals of the electric motor. These potential appearing at the motor terminals is detected via respective potential detectors.
REFERENCES:
patent: 5111123 (1992-05-01), Hach et al.
patent: 5552684 (1996-09-01), Wada et al.
patent: 5786679 (1998-07-01), Nishino et al.
patent: 5861725 (1999-01-01), Endo et al.
patent: 5889376 (1999-03-01), Takatsuka et al.
patent: 5932979 (1999-08-01), Sun
patent: 5982137 (1999-11-01), Endo
patent: 6013994 (2000-01-01), Endo et al.
Hironaka Shinzi
Kawashima Mitsunori
Mukai Yoshinobu
Noro Yoshiki
Honda Giken Kogyo Kabushiki Kaisha
Martin Edgardo San
Witkowski Stanley J.
LandOfFree
Motor drive apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motor drive apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor drive apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1338827