Electricity: motive power systems – Positional servo systems – Pulse-width modulated power input to motor
Patent
1999-03-01
2000-08-29
Masih, Karen
Electricity: motive power systems
Positional servo systems
Pulse-width modulated power input to motor
31856822, 318606, 318632, 318635, 318638, G05B 1128
Patent
active
061113832
ABSTRACT:
A rising saw tooth signal generating circuit generates a rising saw tooth signal having a constant amplitude and a constant period which corresponds to a frequency being slightly higher than the human audible frequency range. The rising saw tooth signal generating circuit also generates a binary signal which generates a reference chopping timing synchronizing with the rising saw tooth signal. The rising saw tooth signal is inverted and a descending saw tooth signal is generated. The descending saw tooth signal is added to the reference current signal and a binary signal is generated by the result of the comparison between the addition signal and the actual current signal. A flip-flop generates a signal which reaches a low level whenever the binary signal is descended and which reaches a high level whenever the reference chopping timing comes. A further binary signal which moves to the high level at the feeding of the current and the signal are supplied to the AND gate. The output signal of the AND gate and the signal is supplied to an AND gate and a binary signal for driving a switching element is obtained.
REFERENCES:
patent: 3611105 (1971-10-01), Sautel et al.
patent: 3659168 (1972-04-01), Salihi et al.
patent: 4104946 (1978-08-01), Peterson
Honma Chiaki
Sugiyama Masanori
Aisin Seiki Kabushiki Kaisha
Masih Karen
LandOfFree
Controller for feeding chopped electricity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Controller for feeding chopped electricity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controller for feeding chopped electricity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1253320