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ELEC431 Software Engineering and Programming Assignment

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Software Engineering and Programming Assignment (ELEC431)

   

Added on  2020-05-28

ELEC431 Software Engineering and Programming Assignment

   

Software Engineering and Programming Assignment (ELEC431)

   Added on 2020-05-28

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UNIVERSITY AFFILIATIONELEC431SOFTWARE ENGINEERING AND PROGRAMMINGASSIGNMENT 2MODELLING AND SIMULATION OF A DC MOTORSTUDENT NAMESTUDENT IDPROFESSOR (tutor)DATE OF SUBMISSION1
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TABLE OF CONTENTSINTRODUCTION.......................................................................................................................................2RESULTS AND OBSERVATION.............................................................................................................4DISCUSSION.............................................................................................................................................9REFERENCES..........................................................................................................................................10INTRODUCTIONDC motors are quite rare in the implementation of engineering applications. There are manyways in which the DC motors are applied especially in the automotive and electrical field. The2
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DC motor speed can be controlled over a very wide range. The DC machines are quite similar tothe AC machines. The DC motors have a DC output as they convert the AC components to DCusing the commutator. As such, the electromagnetic energy becomes motion. They use thebatteries and DC power supply as their sources of electricity. The electrical current flowingthrough a loop of wire will produce a magnetic field across the loop. The flipping of the wireloop is accomplished by the commutator and the brushes (Liwschitz-Garik, & et al, n.d.). Thecommutator must short out the commutator segments right at the moment when the voltageacross them is zero. A DC motor has permanent magnets, electro-magnets, or both components.The stator houses the permanent field magnet and the electro-magnet resides in the rotor and isreferred to as the armature. The brushes and the commutators enable the electronic switching ofthe armature poles. As the rotor turns, the commutator terminals also turn and continuouslyreverse polarity of the current it gets from the stationary brushes attached to the battery. Thebrushes transfer power to the commutator as it spins. The axle is the rotating part of the motorthat holds the armature and commutator. The figure below shows a simplified DC motor system,The equivalent armature circuit based on the Kirchhoff’s voltage law is given as,Va−Ea=RaIa+La(dIadt)3
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Va−Ea=(Ra+sLa)IaThe electro-mechanical system shows the relationship between the rotor speed and the Torque as,Te=TL+dωmdt+bωmWhere:Te:ElectronicallygeneratedTorque(N.m)TL:Torqueofthemechanicalload(N.m)J=Themomentofinertia¿b:ViscousfrictioncoefficientRESULTS AND OBSERVATIONPART 1(i)Simulink modelThe DC model sub-systemwi2i1wbRKphiKphi1s1s1/L1/J1VThe simulation parameters,4
ELEC431 Software Engineering and Programming Assignment_4

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