Figure 7.1Pentagon of Power

Having discussed machinery, amplifiers, and sensors, we can now focus on the top of the Pentagon of Power: Operator Interface and Control. In the next few chapters we will explore simple control methods as well as sophisticated systems before tackling operator interfaces. Throughout the discussion of controls we’ll necessarily stumble into some aspects of operator interfaces. Controls are the electronic bridge between the operator interface and the amplifier. Commanded by the operator interface, controls translate the desire of the operator into electrical signals which, in turn, ...

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