Electricity: motive power systems – Positional servo systems – Frequency- or phase-modulated systems
Patent
1980-02-25
1982-03-09
Rubinson, Gene Z.
Electricity: motive power systems
Positional servo systems
Frequency- or phase-modulated systems
318618, 318656, 318660, 318683, G05B 102
Patent
active
043191720
ABSTRACT:
A numerical control system is provided for a table having a relatively stationary member, a relatively movable member and a position transducer, such as an inductosyn, operatively positioned between them. The numerical control system comprises a high frequency clock which generates a pair of sinusoidal waves to the inductosyn at a lower frequency and the phase of the output signal from the inductosyn is representative of the position of the movable and stationary members. A direction and speed control circuit generates an output signal the frequency and polarity of which is indicative of the desired speed and direction of movement of the movable member, respectively, and this output signal is combined with the high frequency signal from the clock by a signal combiner. A frequency converter converts the signal from the combiner to the output frequency from the inductosyn while a phase comparator generates a digital signal representative of the phase difference between the inductosyn output and frequency converter output signals. The output from the phase comparator is representative of the difference between the requested and actual position of the movable member relative to the stationary member and its output is utilized to activate a motor controlling the position of the movable member via a digital to analog converter and amplifier.
REFERENCES:
patent: 3918045 (1975-11-01), Morser et al.
patent: 4034276 (1977-07-01), Hyatt
patent: 4109185 (1978-08-01), Froyd et al.
Indyk Eugene S.
Rubinson Gene Z.
Tracer Control Company
LandOfFree
Numerical control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Numerical control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Numerical control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1842736