This manual supports you when you work with the temperature controller block from the Standard Library PID Control. It will familiarize you with the functions of the controller blocks and, in particular, with tuning the controller and working with
the user interface in which you set the parameters for the blocks. There is an online help system for both the blocks and the user interface that supports you when setting the parameters of the blocks. This manual is intended for qualified personnel involved in programming, configuration, commissioning, and servicing of programmable controllers.
In spite of all the advances in control over the past 50
years the PID controller is still the most common controller,
see . Even if more sophisticated control laws
are used it is common practice to have an hierarchical
structure with PID control at the lowest level, see [2–5].
A survey of more than 11,000 controllers in the refining,
chemicals, and pulp and paper industries showed that
97% of regulatory controllers had the PID structure, see
. Embedded systems are also a growing area of PID
control, see .
First placed on the market in 1939, the design of PID controllers remains a challenging area that requires new approaches to solving PID tuning problems while capturing the effects of noise and process variations. The augmented complexity of modern applications concerning areas like automotive applications, microsystems technology, pneumatic mechanisms, dc motors, industry processes, require controllers that incorporate into their design important characteristics of the systems.
Lecture "Fundamentals of control systems - Chapter 9: Design of discrete control systems" presentation of content: Introduction, discrete lead - lag compensator and PID controller, design discrete systems in the Z domain,.... Invite you to reference.
In this chapter the following content will be discussed: The root locus concept, the root locus procedure, parameter design by the root locus method, sensitivity and the root locus, pid controllers, negative gain root locus, the root locus using control design software.
John A. Shaw is a process control engineer and president of Process Control Solutions. An engineering graduate of N. C. State University, he previously worked for Duke Power Company in Charlotte, N. C. and for Taylor Instrument Company (now part of ABB, Inc.) in, N. Y. Rochester He is the author of over 20 articles and papers and continues to live in Rochester.
Since the foundation and up to the current state-of-the-art in control engineering, the
problems of PID control steadily attract great attention of numerous researchers and
remain inexhaustible source of new ideas for process of control system design and
industrial applications. PID control effectiveness is usually caused by the nature of
dynamical processes, conditioned that the majority of the industrial dynamical
processes are well described by simple dynamic model of the first or second order....
The Proportional, Integral and Derivative –PID– controller is the most widely used
controller in industrial applications. Since its first appearance in the late nineteen century,
it had attracted researchers from all over the world because of its simplicity and
the ability to provide an excellent control performance. The PID controller now represents
more than ninety percent of the controllers used in the market.
This book is a result of contributions and inspirations from many researchers worldwide
in the field of control engineering.