Negative feedback systems, in general, tend to cause confusion for those first learning their fundamental…
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As we have seen, feedforward control is a way to improve the stability of a feedback control system in the…
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One of the simplest classes of temperature sensor is one where temperature effects a change in electrical…
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Given the ability of pressurized fluids to transmit force over long distances, it is not surprising that many…
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Using filter cells to eliminate wavelengths associated with interfering gases is called positive filtering in…
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A great many precision instruments use the principle of balance to measure some quantity. Perhaps the simplest…
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The following collection of photographs chronicles the complete disassembly of a Fisher E-body globe valve…
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In order to provide an interface between the internal (digital) world of a computer and the external (analog)…
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To summarize some of the key points and concepts for teaching: Do not waste class time transmitting facts to…
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Few areas of mathematics are as powerfully useful in describing and analyzing the physical world as calculus:…
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Multiple accessories exist for pressure-sensing devices to function optimally in challenging process…
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Classical mechanics (often called Newtonian mechanics in honor of Isaac Newton) deal with forces and motions…
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Three-phase AC is the dominant mode of electric power generation and distribution in modern societies.…
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An electromechanical relay is an electrical switch actuated by an electromagnet coil. As switching devices,…
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Any physical location in an industrial facility harboring the potential of explosion due to the presence of…
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An electric motor is often used as a discrete control element in a control system if driving a pump, conveyor…
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It is possible to convey electrical power and communicate analog information over the same two wires using 4…
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Perhaps the most confusing aspect of discrete sensors is the definition of a sensor’s normal status.…
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Most of these formulae appear in molecular chemical form rather than structural form. For example, ethanol…
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Self-balancing mechanisms consisting solely of a baffle/nozzle detector coupled to a feedback bellows, while…
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