Process+Control

[|System] - A set of connected things or parts forming a complex whole, in particular. A set of things working together as parts of a mechanism or an interconnecting network.

Systems can be any size - from microelectromechanical (tiny) to enormous (power generating plants)

[|Systems engineering] - about the whole process of a project

Process
 * uncontrolled - settlement pond

[|Process controls] - statistics and engineering discipline that deals with the mechanism, architectures, and algorithms for controlling a process. Some examples of controlled processes are:
 * Controlling the temperature of a water stream by controlling the amount of steam added to the shell of a heat exchanger.
 * Operating a jacketed reactor isothermally by controlling the mixture of cold water and steam that flows through the jacket of a jacketed reactor.
 * Maintaining a set ratio of reactants to be added to a reactor by controlling their flow rates.
 * Controlling the height of fluid in a tank to ensure that it does not overflow.

[|Control systems] - control via an embedded system.

How stuff works - [|System dynamics], the study of the behavior of complex systems These elements help describe how even seemingly simple systems display baffling nonlinearity.
 * the behavior of complex systems over time
 * internal feedback loops and time delays that affect the behavior of the entire system
 * stocks and flows

[|Control systems] - device, or set of devices, that manages, commands, directs or regulates the behavior of other device(s) or system(s).
 * airplane autopilot
 * oil refinery
 * home heating thermostat
 * car engine cooling

There are of course other ways of controlling a system, such as designing it to mechanically self-regulate. While mechanical regulation is definitely a method of controlling a system, it often isn't lumped in with "control systems".

[|ASME Systems & Design]
 * Computers & Information Engineering
 * Design Engineering
 * Dynamic Systems & Control
 * Electronic & Photonic Packaging
 * Fluid Power Systems & Technology
 * Information Storage & Processing Systems
 * Microelectromechanical Systems

[|Failures in Process Control] - Catastrophic failures in process control remind us of the importance of control systems and engineering. Bhopal, India Disaster, Three Mile Island Disaster, Texas City Disaster

Sensors and Actuators
 * Control Systems: Measurement devices
 * Temperature sensors
 * Pressure sensors
 * Level sensors
 * Flow sensors
 * Composition sensors
 * pH and viscosity sensors
 * Miscellaneous sensors
 * Valves: types, kinds, and selection
 * Valves: modeling dynamics

modeling systems, analysis
 * Simulink
 * [|Modelica] - open, free library - model mechanical (1D/3D), electrical (analog, digital, machines), thermal, fluid, control systems and hierarchical state machines.


 * Meet the people in Process Control Engineering**


 * What's the problem?**
 * **Ask** -
 * **Imagine** -
 * **Design, Build** -
 * **Improve** -


 * That's engineering**

> system components, comparator, controller, plant, sensor, variable, input, output, complexity, behavior, predict, signals, flow > control effort, measured output, error signal, closed loop system > proportional control, integral control, and combinations of proportional and integral (plus derivative?) control > mathematical techniques that involve differential equation solution > linear system, transfer function > xogenious
 * Engineering ideas**

Here are some challenges for you to work on...
 * Do it**


 * Learn more...**
 * [|An Introduction to Control Systems]
 * [|Control Systems] - open textbook - online, free
 * [|Embedded Control Systems Design] - open textbook - online, free

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