An Onboard Measurement System for Studying the Dynamic Running Characteristics of HTS Maglev

To promote the development of high-temperature superconducting (HTS) maglev technology, a 45-m-long HTS maglev ring test line has been built in Chengdu, China. To investigate the dynamic running characteristics as well as the key levitation parameters of the vehicle at different operating conditions, a real-time measurement system mounted on the vehicle was designed, realized, and validated. The measurement system is mainly constituted by sensors module, data acquisition and processing module, and communication module. A set of sensors including laser displacement sensors, tri-axis accelerometers, and optoelectronic sensors were installed on the vehicle. By means of the data acquisition and processing module, the key levitation parameters of the HTS maglev vehicle like levitation height, lateral offset, acceleration, running velocity, and online position are real-time recorded and displayed on the tablet computer. These parameters are prerequisite to analyze the dynamic running characteristics of the HTS maglev vehicle. The test process and typical results of the HTS maglev vehicle running on the ring test line are reported.