Control systems 3 min read
Control Engineering Practice
Control engineering is concerned with the analysis and design of goal-oriented systems. Therefore the mechanization of goal-oriented policies has grown…
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Two Examples Of The Use Of Feedback
The concept of feedback used to achieve a closed-loop control system was described in Section 1.1 and illustrated by the…
Control systems 5 min read
History Of Automatic Control
The use of feedback to control a system has a fascinating history. The first applications of feedback control appeared in…
Control systems 4 min read
Control system
Engineering is concerned with understanding and controlling the materials and forces of nature for the benefit of humankind. Control system…
basic 2 min read
Electromagnetism
Magnetic field due to an electric current Magnetic fields can be set up not only by permanent magnets, but also…
basic 1 min read
Reluctance
Composite series magnetic circuits For a series magnetic circuit having n parts, the total reluctance S is given by
basic 1 min read
Magnetic flux and flux density
Magnetic flux is the amount of magnetic field (or the number of lines of force) produced by a magnetic source.…
basic 3 min read
Magnetic circuits
Magnetic fields A permanent magnet is a piece of ferromagnetic material (such as iron, nickel or cobalt) which has properties…
basic 1 min read
Capacitance
Capacitors Every system of electrical conductors possesses capacitance. For example, there is capacitance between the conductors of overhead transmission lines…
basic 2 min read
Capacitors and capacitance
Electrostatic field Figure 6.1 represents two parallel metal plates, A and B, charged to different potentials. If an electron that…