Apply Bond-graph to Analysis and Research Nonlinear Magmanic-ball System

• Main Authors: huan-chieh chen, 陳煥傑
• Other Authors: 曾國雄
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/a4fdh9

碩士 === 國立臺北科技大學 === 電機工程系所 === 95 === Bond graph is simulation tool for analyze dynamic system, it can explicitly express the system the energy transmission and the transformation phenomenon, also may describe clearly exists in during various domains the energy transformation actions, its uses the part all to conform to the actual system physics significance, also retains the original system the dynamic characteristic, and may the procedure transform the simulink software mold train to supply the system simulation. The present paper mainly is use bond graph as a tool to construct nonlinear dynamic system model, redesigns PID and Neural Network controller, and let magnetic-ball system to act according to the expected value which the system inputs, lets magnetic-ball float in the altitude which assigns ,use bond graph to construct magnetic-ball system model, may discover traditional magnetic-ball system has neglected Back EMF part ,although still might achieve the control the effect , but its simulation integrity had actually makes place of the one question, but the energy conservation law which although was everybody all knew, but extremely was actually easy to neglect ,because Bond graph strictly observed the characteristic which the energy conservation law, therefore has not had this aspect question anxiety. This paper will use bond graph to construct a magnetic-ball system that consider Back EMF effect ,again makes the control by PID and Neural Network controller, and analyzes its and difference of the traditional magnetic-ball system neglect counter Back EMF effect, Also may know use bond graph could construct higher order nonlinear system model, can avoid linearized the complex process and the neglect dynamic characteristic possibility, again uses Neural Network and the PID controller makes the control ,obtains a more accurate result.