Single Phase Induction Motor Adjustable Speed Control
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Single Phase Induction Motor Adjustable Speed Control Using DSP and Microcontroller Course Project for ECE734 Fall Semester 2000 at UW-Madison Jianming Yao Abstract —In th is pr oj ect , th e app li cat io ns of VL SI in moto r co nt ro l is real iz ed with tw o approaches: DSP and microcontroller. A single phase induction motor adjustable speed drive control is implemented with hardware setup and software program in C code. The main feature used in DSP and microcontroller is their peripherals to realize pulse width modulation. One chip and re-programmable ROM replaces the conventional complicated circuit solution. This brings low cost, small size and flexibility to change the control algorithm without changes in hardware. The experimental results are obtained and agree with the design objective. Introduction The applications of VLSI in motor control are getting more and more important and popul ar. In 1980s and 1990s, micr oproc esso rs, such as Intel’s 8080, 8031, 8098, 80196 and Motorola’s 68000, were mostly used in motor control. Recently, microcontroller are widely used in industry and the application of DSP and FPGA emerged in recent a couple of years. Both microcontrollers and DSPs are presently used in motor control; however, beca use of the rea l -ti me co nt ro l al go ri th ms th at mus t be pro ces sed , the maj ori ty of the se applications are driven by microcontrollers. This is partially due to engineers' comfort with microcontrollers and lack of familiarity with programming DSPs; however, DSPs are expected to surpass microcontrollers in the precisi on control of motors by 2003. Embedded motor control applications are expected to reach 7.3 billion units by 2001 ( source: Motion Tech Trend s). Motor control is a significant, but often ignored, segment of embedded applications. Motor control applications span everything from washing machines to fans, hand-held power tools, and automotive window lift and traction control systems. In most of these applications there is a move away from analog motor control to pr ec ision di gi ta l co nt rol of moto rs . Di gi ta l co nt ro l of mo to rs pe rm it s a mu ch more
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