Question

Advanced Process Control Techniques

Compare and contrast at least 3 PID tuning methods

Answer 1

Advanced process control: (APC) Advanced process contsol sefers to several proven advanced Control techniques, such as feed forward, decoupling, and inferential controle APC can also include model Predictive control described below. APC is typically implemented using function blocks Bor custom programming capabilities at the DCS level and contrast at Compare methods: least 3 PID tuning Toning methods of controllo describe the Controlled pasiameters in the form of foumulae ar algorithms. They ensure that the resultant process control system would be stable and would achieve the desired objectives. Is literatur a wide variety of PID controllo tuning methods oste prioposed. These are borcadla classified into thoree categories and these wie. closed loop methods, Ziegler - Nichols method Modified Ziegler-Nichols method Tyreus - Luyben method → Damped oscillation method.

open loop methods. Coben and coon method. > Fetik method IMC method >minimom Sos criteria (IAS, ISE, ITAE) metho Soft computing methods: → fuzzy logic Artificial Intelligence Genetic Algorithm → Evolutionary Programming. Ziegler - Nichols method: Ziegl91 - Nichols tuning stole was the finest tubing sole to provide a practical approach four PID controller tuning Based on the sole, a PID controller is tuned by firstly setting it to the Propositional - only method but vaurying the gain to moke the process system in continious oscillation. The corresponding gain is called as the ultimate gain ku and the oscillation period is denoted as the ultimate period P. coben and coon methods ble method control action is removed and an open loop transient is interoduced by a unit stop change in the signal to the process. At the output of the measuring Clement the step gesponse is recorded

Genetic Algorithm based tuning The genetic algorithm is an optimization technique that fulfills a poorallel, stochastic, beit directed search to detomine the fittest population. The GA-PID controller consists of a Convention algorithm breeds computer programa