Electronic Mirco-Balance of Magnetic Suspension System

• Main Authors: Kuntasie, 謝昆達
• Other Authors: Y.-A. Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/77846578295290096263

碩士 === 中華技術學院 === 飛機系統工程研究所 === 98 === ABSTRACT Magnetic suspension system could be used to suspend object stable in the air and could get a better control of steady levitation. It provided many advantages, such as low-friction properties, easy operation, low noise and low energy loss. The magnetic suspension in the thesis utilized the repulsive force in the magnetic force. The repulsive force was producld by the same poles, and due to the non-linear relationship of repulsive force, we should overcome the non-linear calculation problems by simulation software. This thesis studied the electronic balance, floating the platform by the magnetism. The balance changed its position due to the weight change of the load, and the blance could calculate the weight of the load by LabVIEW software. We used the AD (Analog signal to Digital signal) card to be the brige of reading signal. Signal came from the voltage change produced by the different received infrared power, that was amplified by amplifier circuit with different load weight. The signals were read by the inferface card developed by LabVIEW and than calculated by numerical analysis software(Origin)for its nonlinear equation, so these voltage volues would be transformed to weight values. This thesis studies the structure of micro-electronic balance with the LabVIEW interface control, the impact factors of magnetic distance for the suspension process of the platform, and the relationship of voltage peak resulted from the infrared light source. As magnetic repulsion force was dynamic and unstable force and with nonlinear relationship, the key point was to overcome its unstable magnetic repulsion. We also finished the structure of micro-blance between platform and interface control card and its integration. This thesis would also discuss the floating problems of the blance and the emission intensity of infrared LED. The main measurement range for this fabricated blance was between 57g to 263.9g, and its precision and resolution could be to 1g.