Download 2. Task Description - Field Robot Event 2014

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H‐Bridge Schematic (Gautam 2014) Figure 21 shows the basic schematic of MOS FET H‐bridge. DC Motor Power window motor of a car was used to drive wheels of the robotbecause it has relatively large torque in a compact size. It is a type of permanent magnet direct current motor (later PMDC motor) with a rotor shaft connected to worm gear. By the definition PMDC motor consists of radially magnetized permanent magnets, which are attached on the wall of motor housing forming a stator core to produce field flux and a rotor having dc armature with a commutator segments and brushes (Electric Motor, 2014). Figure 22 (a) shows the actual motor used in this robot and the torque relation. 34 Proceedings of the Field Robot Event 2014