Question

Write a report about PID controller. it should cover the following topics:

• Algorithm of PID controller.
• Effects of PID controller parameters.
• Types of PID controller.
• PID controller using PLC (Programmable Logic Controller).
• Tuning methods of PID controller parameters.
• Real Application of PID controller in industry.

Answer 1

constant parameters and is useat in use ave accurate and Stable PID controller: A PSD controller is an instrument industrial control applications to regulate Temperature. floce, pressure, speed and other process Varicebles. PID (proportional integral Desivafive) controllers a control loop Peedback mechanism to control process » Variables and the most controller Algorithm of PID controllere The PID controller algorithm involves three separate accordingly called Sometimes three term control the integral and decinative values denoted P, I and D simply put these values . be intepreted in desms of time Pi depends on present error accumulation of past error. De is the prediction of future error. ( the pis algorithm Interactive algorithm controller output. proportimal + Саи The on the ace. : set Point error proportional Kc integral Derivative had at process vagjable are & isteactive algorithm. ult) = ke [elts & ect) st] * [ 1+ The 2 ecter]

Non interactive algorithm: celt ) - kc [ets + - - Cart Time е (0) 1 set - Kc proportimal integral process Variable . + S Derivative ed a Whese, Ke= peopostinal gain. - Elpect of PID controller parameters If the pop controller paremeders (the gains of the Peoportional integral and desinafines Terms are choose incorreetly, the controlled process mout can be unstable. its output Divesges with or without oscillation. and is limited only by saturalis or mechanical Breakage proportional controllee pas ametees the proportional form produces an output value that is proportional to the current The proportimal responses can be adjusted of multiplyny constant KP called the * value the error proporfined Jan constant

These controllers. AD on-off control method is. Types of PID controller: ( a PID controllers classified into These types like ON/OFF proportional and Stanetard to Type controllers. are ased system. the wer Based on control con be used the controller Ecgulate the method. ON/off controli device used for temperature control. The device output may be on lopp through to center state. This controller will turn on the output simply once the Temperature crosses fixed point. . A limit controller is one particular kind of onloff contanter. that was fatching relay This Relay is reset and used to turn off a method certain temperature is affeemed. proportional controla This kind of controller is designed to remove the cy Which is connected through onlopp control. This PID controller will Reduce the normal power which is supplied Rowa Eds the heater the Temperature Reaches fixed point This controlled has one feature to control the heaterso the pixed point . Gowever it will seach the fixed Point maintain Steady Temperature: monceally once a cycling once that it will exceed Standard Type PID controller: this kind of PID Controlleg will merge peoportinal confrol through Through integral and and deviation derivatim.

thom the has PPD functim. control so automatically assist The aust to compensate mochticection within the sessteur hne Rologia can be done PID confroller using plc (peogsammarie logie coafat) 500 laddee logic programming software. implementation of Pip function using only mathematicas Plc are used tike PIP controllers in most of the Industrial control applicatims. the arrangement of Red PID Blocks within PLO to give superior choice for an exact ple control. each ple includes the PiD Blocks the Software programming. method OP PID controller. Before the work working of the of the PID controller takes place it must be tuned to suit the dynamics of the proase, To be confrolled. Turning is nothing But the procedure of Reaiving an ideal reply from the controller through selting Best proportimal gaine, infegeal & deriva fines. Pactose The most frequently wed method are Reial & error with Tunning - Here zeigter Nichols. it is 4 Teial and essor method i simple method of PID controllee Tanning while the son os controller is working we can Tune the controller

10 this To zero until the system oscillation stop and Rinally adjust to get fast response. method, fiest have to set ki ana kd value and increase psoportimal Teren (Rp) Reaches oscillating Behaviour once it is oscillating, adjust kicmtegral termo so that Zeigler - Nichols Method: Zeigles-Nichols proposed closed loop methods for Tanning the PID controller Those are the continuous cycling Methed damped oscillation oscillation methed In this method first we have to set p- controller constant ike to a particalar value while ki and kod Values are zero. peoportimal gam is increased fill the system oscillater at a constant amplitude. are Application of PID Controller Industry fallecom the applicafim of PIO controller in Industry. Furnance semperature Controlt. furnance Typically holding pasye amounts of raw material high temperature if commonplace for the material involved to have a large mass. As Result high degree of hestia the material Temperecture doesn't change high heat is applied involve heating and and is it possesses quickly even when

M PH is widely Control .. C challenge to Neutralizatim PH control! viecoed in industry foeone: PH is highly non-linear its Behavious changes from one to another one oper fue as other effects of material can curb What would be volatile dynamics until the Buffer is Saturacteel while the challenging from a control perspective. They well suited for the P8D form of the The Buffesing some otherwise dynamics of pH are are controller.