Electricity: motive power systems – Positional servo systems – With particular motor control system responsive to the...
Patent
1975-12-05
1978-01-03
Schaefer, Robert K.
Electricity: motive power systems
Positional servo systems
With particular motor control system responsive to the...
318603, G05B 1940
Patent
active
040669467
ABSTRACT:
A counter-pointer display of aircraft altitude is driven by a servo in accordance with a digital representation of height provided at regular intervals by an air-data computer. The content of a first register is updated regularly with the height representation, and the difference between this and the content of a second register is entered into a third register. The content of the second register is updated rapidly from a shaft encoder that is coupled to be driven together with the counter-pointer display by a stepping motor, and the content of the third register is updated in synchronism with the updating of the first register to staticize the error between the input height-representation and the output representation provided by the counter-pointer display. The stepping motor is supplied with pulses at a rate dependent on the magnitude of the staticized error value via a pulse-rate divider, the pulse-rate divider being supplied with a regular pulse train via a gate device that is operable to block passage of pulses of the pulse train to the divider. The proportion of pulses passed by the gate device and the magnitude of the voltage energization of the motor are both regulated in accordance with the magnitude of error value staticized by the third register.
REFERENCES:
patent: 3370289 (1968-02-01), Hedgcock et al.
patent: 3435310 (1965-03-01), Bradley
patent: 3435314 (1969-03-01), Bradley et al.
patent: 3904858 (1975-09-01), Rosshirt
patent: 3908195 (1975-09-01), Leenhouts
patent: 3963971 (1975-06-01), Leenhouts et al.
Jones John W. D.
Oakey Keith R.
Feldhaus John J.
Schaefer Robert K.
Smiths Industries Limited
LandOfFree
Servo systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Servo systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servo systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-283042