国防科技大学学报2011，Vol.33Issue(1)：109-114,6.
测速定位系统的研究
Research on Speed and Position Detection System of High Speed Maglev Train
吴峻 1周文武 1李璐1
作者信息
- 1. 国防科技大学,机电工程与自动化学院,湖南,长沙 410073
- 折叠
摘要
Abstract
Speed and position detection system is the basis of propulsion and traction control for high speed maglev train. Compared with traditional railways, high speed maglev trains have some exclusive problems which can affect system proper working, such as levitating fluctuation, joint gap of long stator track and contactless reader for absolute position. To reduee detection error of relative position due to levitating fluctuation, a method utilizing levitation gap to normalize detection output into the one of 8mm levitation gap is proposed. It is found that it can satisfy the precision reqluirement of 2.8°for relative position detection. To reduce detection error of relative position due to joint gap of track, a switching method between two relative-position detecrtions based on a predictive adaptive filter was adopted. As a result, it can avoid distortion and satisfy the precision requirement of relative position detection. To solve the problem of absolute position reader by contactless metbod, an equivalent model of electro-magnetic induction reader was analyzed. It is found that the frequency and amplitude of magnetic fields need be increased and the resistor of emit coils need be decreased. As a result, it can satisfy the absolute position detection requirement.关键词
高速磁浮列车/测速定位/悬浮间隙/轨道接缝/相对位置/绝对位置Key words
high speed maglev train/ speed and position detection/ levitation gap/ joint gap of track/ relative position/ absolute position分类
交通工程引用本文复制引用
吴峻,周文武,李璐..测速定位系统的研究[J].国防科技大学学报,2011,33(1):109-114,6.
