Step Test Data From the Heat Exchanger Process
ABSTRACT: A previous article presented the first order plus dead time (FOPDT) dynamic model and discussed how this model, when used to approximate the controller output (CO) to process variable (PV) behavior of proper data from our process, yields the all-important model parameters:
Process Gain is the "How Far" Variable
ABSTRACT: In this article we focus on process gain, Kp, and seek to understand what it is, how it is computed, and what it implies for controller design and tuning.
Process Time Constant is the "How Fast" Variable
ABSTRACT: n this article we focus on process time constant, Tp, and seek to understand what it is, how it is computed, and what it implies for controller design and tuning.
Dead Time is the "How Much Delay" Variable
ABSTRACT: In this article we focus on process dead time, Өp, and seek to understand what it is, how it is computed, and what it implies for controller design and tuning.
Validating Our Heat Exchanger Process FOPDT Model
ABSTRACT: Over a series of articles, we generated step test data from a heat exchanger process simulation and then explored details of how to perform a graphical analysis of the plot data to compute values for a first order plus dead time (FOPDT) dynamic model.The claim has been that the parameters from this FOPDT model will offer us a good approximation of the complex dynamic behavior of our process.