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DC Motor Speed Control via Fuzzy / Pole Placement / PI Controller
Högskolan Dalarna, Akademin Industri och samhälle, Elektroteknik.
2010 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
Abstract [en]

This report presents a new way of control engineering. Dc motor speed controlled by three controllers PID, pole placement and Fuzzy controller and discusses the advantages and disadvantages of each controller for different conditions under loaded and unloaded scenarios using software Matlab. The brushless series wound Dc motor is very popular in industrial application and control systems because of the high torque density, high efficiency and small size. First suitable equations are developed for DC motor. PID controller is developed and tuned in order to get faster step response. The simulation results of PID controller provide very good results and the controller is further tuned in order to decrease its overshoot error which is common in PID controllers. Further it is purposed that in industrial environment these controllers are better than others controllers as PID controllers are easy to tuned and cheap. Pole placement controller is the best example of control engineering. An addition of integrator reduced the noise disturbances in pole placement controller and this makes it a good choice for industrial applications. The fuzzy controller is introduce with a DC chopper to make the DC motor speed control smooth and almost no steady state error is observed. Another advantage is achieved in fuzzy controller that the simulations of three different controllers are compared and concluded from the results that Fuzzy controller outperforms to PID controller in terms of steady state error and smooth step response. While Pole placement controller have no comparison in terms of controls because designer can change the step response according to nature of control systems, so this controller provide wide range of control over a system. Poles location change the step response in a sense that if poles are near to origin then step response of motor is fast. Finally a GUI of these three controllers are developed which allow the user to select any controller and change its parameters according to the situation.

Ort, förlag, år, upplaga, sidor
Borlänge, 2010. , s. 118
Nyckelord [en]
DC motor, Fuzzy Controller, Pole Placement Controller, PID controller, GUI
Nationell ämneskategori
Maskinteknik
Identifikatorer
URN: urn:nbn:se:du-5514OAI: oai:dalea.du.se:5514DiVA, id: diva2:519055
Uppsök
teknik
Handledare
Tillgänglig från: 2011-04-26 Skapad: 2011-04-26 Senast uppdaterad: 2013-07-04Bibliografiskt granskad

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