11.4 Applications
There are three types of control systems
Ø Continuous systems operate non stop
Ø Batch system completes a number of tasks in a well defined sequence
Ø Discrete system completes a single task in a small time interval
Control systems can be called open or closed loop. Open loop means that there is no feedback to control it. Closed loop contains a feedback to control the operation. **Draw figs 11.9 & 11.10 p222**
Overdamping occurs if the change is slow to respond. Underdamping is when the change is to fast and it can go out of control. Critical damping it the desired speed to change the output of the system.
Write out the sentence and fill in the missing word
|
????? systems operate non-stop with
no starting point or end point. |
|
A batch system
completes a number of tasks in well-defined ?????
. |
|
An open loop system
gets no ????? back from the processes it controls. |
|
A closed loop
system gets feedback from the processes it controls to ????? the operation of the device. |
|
????? devices are used to measure the
temperature in refridgerators and convection ovens. |
|
The rate of change
in the output of a closed loop system is called ?????
. |
|
Underdamping
occurs if the change is too ????? and
it overshoots the desired level. |
|
????? is the preferred rate of
change in the output of a system. |
|
An industrial
robot can perform complex motions requiring ?????
to carry out a variety of tasks. |
|
????? robots are being developed
for the home. |