Author: John Mulindi
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The Basics of Electric Circuits
SI Units The system of units used in engineering and science is the (International System of Units), usually abbreviated as SI units, and is based on the metric system. The basic units in the SI system are listed with their symbols in Table 1 Table 1: Basic SI units Quantity Unit Length Meter, m Mass…
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Feedback Control System
The basic elements of a feedback control system are represented by the block diagram below. The functional relationships between these elements are also shown in the diagram. The block diagram represents flow paths of control signals but do not represent the flow of energy through the system or process. The plant is the system or…
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Principles of Control Systems
A control system is a system of integrated elements whose function is to maintain a process variable at a desired value or within a desired range of values. The control system monitors a process variable or variables, and then causes some action to occur to maintain the desired system parameter. A good example in a…