Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Patent
1983-11-10
1985-07-16
Shoop, William M.
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
318605, 318661, 318329, G05B 106
Patent
active
045299226
ABSTRACT:
A resolver type motor speed control arrangement including an exciting signal generating circuit including a first frequency division counter for producing from a clock pulse an exciting voltage signal supplied to the primary winding of the resolver coupled to the motor, reference signal generating means in the form of a up-down counter for generating a reference signal having a predetermined period from the clock pulse, circuit means for supplying a feed pulse to the reference signal generating means for varying the phase of the reference signal, phase detecting means for synchronously rectifying the output signal of the secondary winding of the resolver in accordance with the reference signal, speed signal generating means for generating a speed signal corresponding to the speed of the motor or the resolver and a servo-amplifier responsive to outputs of the phase detecting means and the speed signal generating means. There is provided a second frequency division counter for dividing the frequency of the feed pulse supplied to the reference signal generating means and for counting the number of the feed pulses, a digital to analogue converter for converting the counts of the second frequency division counter into analogue signals, and an adder connected between the servo-amplifier and the digital to analogue converter for adding the output of the digital analogue converter to the output of the phase detecting means.
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Ro Bentsu
Shoop William M.
Toei Denki Kabushiki Kaisha
Toshiba Kikai Kabushiki Kaisha
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