초록 ▼

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 m

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.

대표청구항 ▼

Positioning apparatus for a rotary drive system comprising: a resolver having primary and secondary windings; an exciting signal generating circuit including a clock pulse generator for generating clock pulses and a first frequency division counter for producing from said clock pulses an exciting vo

Positioning apparatus for a rotary drive system comprising: a resolver having primary and secondary windings; an exciting signal generating circuit including a clock pulse generator for generating clock pulses and a first frequency division counter for producing from said clock pulses an exciting voltage signal supplied to said primary winding; reference signal generating means for generating, from said clock pulses, a reference signal having a predetermined period; a feed pulse generator for generating a feed pulse signal; circuit means for varying a phase of said reference signal in response to said feed pulse signal; phase detecting means for rectifying an output signal of said secondary winding of said resolver synchronously with said reference signal; speed signal generating means for generating a speed signal corresponding to a speed of said rotary drive system; a servo-amplifier responsive to outputs of said phase detecting means and said speed signal generating means for driving said rotary drive system; said circuit means including a second frequency division counter for dividing a frequency of said feed pulse supplied to said reference signal generating means and for counting the number of said feed pulses and a digital to analogue converter for converting counts of said second frequency division counter into digital signals; and an adder for adding an output of said digital to analogue converter to an output of said phase detecting means and provide an addition result to said servo-amplifier.