Feature: PID controllers


Figure 1: Setting the position of the system zero β


10/T 20/T 30/T 40/T


%


Overshoot 5 3 2 0


Figure 2: Block diagram of a system based on a P + I contoller


Table 1: Overall system gain and required overshoot


Figure 4: Block diagram of the system in Example 2


Figure 3: Unit step time response of the system in Example 1


Figure 5: Unit step time response of the system in Example 2


www.electronicsworld.co.uk February 2023 41


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