| Ever As the pollution and energy shortage problem is getting worse in recentyears,the State attaches to sustainable development strategies, environmentalprotection,energy saving,Green thinking is too deeply embedded in our minds.Electric bike with its convenient,energy-saving and environmentally-friendlybenefits, gradually became an important transport over short distances.General power electric bicycles currently on the market are relatively small,between the200-500W. But in order to meet the steep, climbing real complex roadconditions, such as long distance, requiring more powerful electric motorcycle. Sothe study of high power motor and motor controller is a must. Currently available ona small number of manufacturers producing high power motor controller, but itsreliability, stability needs to be improved.This article first establishing dynamic model of electric motorcycles, and principleof brushless DC motors, electronic structure and characteristics are described todiscuss the basic structure and mathematical model of brushless DC motor and itscontrol system. Then choose the STM8S105single-chip hardware design of thecontrol system as a master chip, the system includes: minimum system based onMCU circuit, driving circuit, switch to the input circuit, position detection circuit. Insoftware design part this according to market needs, made software designprogramme, on software overall and all module for for block diagram design, and onprogram for full prepared, eventually achieved go put adjustable speed, and had flowprotection, and limited flow protection, and electronic brake, features, and to ratedvoltage48V, and rated power800W of motor for prototype, in measuring powerexperiment Taiwan frame on controller of performance and the features for hasstrictly of test, to out has test of graphics, and data and results test results meetrequirements, Final loading ramp of the controller, reliability, stability, durabilitywas tested, the test surface meets the requirements. |
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