Automation Systems - exercises - lecture 1
Lecturer: Jakub Mozaryn, e-mail: j.mozaryn@mchtr.pw.edu.pl February 26, 2018
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1 Exercise 1
A precise optical signal source can control the output power level to within 1 %. A laser is controlled by an input current to yield the power output.
The microprocessor compares the desired power level with a measured signal proportional to the laser power output obtained from a sensor, and controls the input current. Sketch the block diagram representing this control system.
2 Exercise 2
An automobile driver uses a control system to maintain the speed of the car at a prescribed level. Sketch a block diagram to illustrate this feedback system.
3 Exercise 3
Choose, observe and describe a feedback system using general block diagram (Fig.1). Write names of elements and signals e.g. actuator - hand, sensor - eye.
Figure 1: Block diagram 1
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