Answer Posted / kyle condran
derivative works on rate of change of error(slope of error) and assumes that the process will continue changing at that rate and tries to overcompensate for it.
so for fast processes upsets or step changes have high error slopes, sometimes almost infinite or straight up, so the control goes nuts trying to compensate for error. There is usually an option to suppress derivative is for step changes but for fast processes is should be zero.
You will see derivative on laggy slow processes such as some temperature and large volume level loops.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
Im having problems with interfase betwen SPI v7.0 and SPPID v5.05. Previous versions of Intools shoul be fixed with SPPIDproj.ocx file. It was necessary to replace this file with one that allows the connection between different versions of SPPID. It is necessary in the current version to do the same?Thanks
Derive capacitance to 4-20ma conversion formula / relation in capacitance type pressure sensor?
What is intrinsic safety mean.
how many maximum enter 2mm Dia solid cylindrical pipe into 8mm Dia hollow cylindrical pipe. give answer with calculation.
How to erection of DCS Panel at site step by step
we have level transmitter for h2s04 storage tank capacity 10k ,always there are failure of transmitter due to failure of magnetic floats ,please come up with solutions at the earliest.
please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com
Make a ladder diagram on LSL valve will close, on PSL valve will open and start the motor
Please any one can provide latest aptitude test,technical test and interview questions for tata consulting engineering (TCE) i need it asap thanks in advance
what is the input of digital counter during the the calibration time?
In dcs panel we are using diff type of modules ?what is module ? what is the use of modules ?diff type of module?
i have steam drum height 1000mm. and i want to placed the transmitter below the tap.how i calculate.
How many interlocks at turbine? Plz explain briefly
what would be the minimum flow rate that we can measure on rotameter..?
what can of fault ofently come in vibration mesurement?
