Answers
Chapter 1
1. (a) Pressure on keys, display of calculated value, (b) electrical signal, sound, (c) radio signals, sound
2. Open- no feedback, closed- feedback, see Section 1.3.1 and 1.3.2
3. (a) Measurement- temperature sensor, controller- thermostat, correction- heater, process - water bath, Co) measurement- rotary speed sensor, controller- motor, process- shaft, (c) measurementsensor of thickness, e.g. LVDT, controller- differential amplifier, correction- rollers, process - steel strip
4. See Fig. A. 1
Figure A.1 Chapter 1, problem 4
5. Measurement- thermistor with resistance-to-voltage converter, comparison - differential amplifier, ...
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