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DIRECTION AND SPEED CONTROL OF DC MOTOR. Download Free PDF. paper cover icon In conclusion, the direction and speed of DC motor can be controlled. DC motor speed controller control the speed of any common dc motor rated upto 100 V. It operates on 5V to 15 V. Ç. CONTENTS. CONTENTS. Page 2 There are three methods for controlling speed of dc series motor. a) Field divertor. b)Armature divertor. c)Tapped field control. d)Paralleling field coils. 2 5.2 Speed Control of D.C. Shunt Motors. The speed of a shunt motor can be changed by (i) flux control method. (ii) armature control method (iii) voltageThe purpose of this project was to control the angular rate of the load (shaft position) of a DC motor by varying the applied input voltage. The aim of this this paper is to describe the principle of. DC motor speed control using armature control methods and field control methods and stopping the DC. (ii) Armature or Rheostatic Control Method: This method is used when speeds below the no-load speed are required. As the supply voltage is normally constant,