Controlling apparatus utilized in process instrumentation system

Details Controlling apparatus utilized in process instrumentation system Controlling apparatus utilized in process instrumentation system

1990-07-02

1992-06-02

Ruggiero, Joseph

Boots, shoes, and leggings

364153, 364174, 364176, G05B 1302

Patent

active

051192888

ABSTRACT:
A controlling apparatus comprises a portion for calculating a deviation between a process variable from a controlled system and a target value, a first portion for receiving the deviation and executing a velocity-type I controlling calculation to obtain a first calculation output, a second portion for receiving the deviation and executing a velocity-type P or PD controlling calculation to obtain a second calculation output, a summing portion for summing the first and second calculation outputs to obtain a velocity-type manipulative variable, a conversion portion for converting the velocity-type manipulative variable into a positional manipulative variable, a portion for limiting a magnitude of the positional manipulative variable between upper and lower limits, and limiting a change rate of the positional manipulative variable within a predetermined change rate, and a judgment portion for judging whether or not the positional manipulative variable is deviated from at least one of upper and lower limits and the change rate. The first portion includes an output unit for the first calculation output, and a stopping unit for selectively stopping the output of the first calculation output. When the judgment portion determines that the manipulative variable is deviated, it supplies a signal to the stopping unit, and stops the summing operation by the summing portion.

REFERENCES:
patent: 4698745 (1987-10-01), Hiroi et al.
patent: 4714988 (1987-12-01), Hiroi et al.
patent: 4755924 (1988-07-01), Hiroi et al.
Automatisierungstechnik-At., vol. 35, No. 11, 1987, Munchen De, pp. 464-465; A. H. Glattfelder: "Zum Fuhrungsverhalten von Pid-Arw-Eingrossenkreisen".

Affiliated with

Also associated with

Rating

Controlling apparatus utilized in process instrumentation 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 Controlling apparatus utilized in process instrumentation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlling apparatus utilized in process instrumentation system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2234301