Dynamic Measurement System Design for Vertical Irregularity of High Speed Maglev Track

Abstract:

Based on the principle of inertia reference method, a kind of dynamic measurement system assembled on a vehicle was proposed to realize the measurement for the vertical irregularity of high speed maglev track. It is verified that the system can meet the requirements of measurement error within ±0.2 mm. As the detection surface was the cogging structure type of long stator of synchronous machine, an effective algorithm was put forward to reduce “cogging effect”. As a result, it can reduce the measurement fluctuate within ±5 mm which is caused by the cogging structure. Finally, according to the requirement of measurement, the selections of related sensors in the system were analyzed and the preliminary consideration of platform design was discussed.

Key words:highspeed maglev train; track irregularity; dynamic measurement; cogging effect; mechanical platform