Electricity: motive power systems – Positional servo systems – 'reset' systems
Patent
1989-09-29
1991-10-22
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
'reset' systems
318609, 318561, 364161, 364162, 364163, G05B 1142
Patent
active
050598805
ABSTRACT:
A digital controller comprising a deviation calculator, a positional P-controlling calculation device, a velocity-type I-controlling calculation device, a signal converter, and an adder unit. The deviation calculator for subtracts a process variable of an object from a set point variable, to obtain a deviation. The positional P-controlling calculation device performs positional P-calculation on the deviation obtained by the deviation calculator. The velocity-type I-controlling calculation device performs velocity-type I-calculation on the deviation. The signal-converting device converts the velocity-type I-calculation output of the velocity-type I-controlling algorithm device, into a positional I-signal. The adder unit adds the positional I-signal obtained by the signal-converting device and the positional P-calculation output obtained by the positional P-controlling algorithm device, thereby obtaining a manipulative variable. The manipulative variable value is supplied to the object to control the object.
REFERENCES:
patent: 3582629 (1968-08-01), Ross
patent: 3770946 (1973-11-01), Fertik et al.
patent: 4418381 (1983-11-01), Molusis et al.
patent: 4727303 (1988-02-01), Morse et al.
"Microprocessors in Instruments and Control", Chapter 6, Velocity Algorithm, Robert J. Bibbero, 1977.
"Distillation Columns An ISA Monograph", Chapter 8, Velocity--Control Algorithm, A. Eli Nisenfeld et al, 1981, Instrument Society of America, pp. 204-206.
The Basis and Application of the Digital Instrumentation Control System, Kazuo Hiroi, Ind. Technology Corp. (1987), pp. 90-95.
Bergmann Saul M.
Kabushiki Kaisha Toshiba
Shoop Jr. William M.
LandOfFree
Digital 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 Digital control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-110932