Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001

30. CONTINUOUS CONTROL

· A controlled system includes,

- a basic system that does not achieve objectives by normal means - for our purposes a mathematical model a such a system is very important.
- some objective for the operation of the system.
- a controller that is matched to system, and tuned to meet the control objective.

· Objectives for control systems might include,

· The systems below are often directed by control systems.

· Some Notes:

- Neither of these systems have controls.

- They both have inputs, and outputs.

- The output is not always something exiting the system. eg. the water tank height

is the system state.

- We can treat these systems with `black boxes' with lumped parameters.

· All of the inputs and outputs are expressed as physical quantities (as will be seen later).

30.1 CONTROLLING CONTINUOUS SYSTEMS