Experiment : Micro controller Based DC Drive Aim: To study the operation of Microcontroller based DC drive System Learning Objectives: To study speed variations of a DC motor To study open loop and closed loop controls. To study Micro computer based dc drive Apparatus : Experimental kit DSO/CRO (Unearthed) Multimeter Patch cords and DSO probes Pre Test Theory Microcomputer control of DC drive The analog control scheme for a converter fed dc motor drive can be implementedbby hardwired electronics. An analog scheme has several disadvantages: nonlinearity of speed sensor, temprature dependency,drift and offset.Once a control circuit is build to meet certain performance criteria,it may require major changes in the hardwired logic circuits to meet other performance requirements. A microcomputer reduces the size and cost of hardwired electronics,improving reliablity and control performance. This con...
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