US 11,971,326 B2
Dynamic simulation test platform and method for ultra-high-speed evacuated tube magnetic levitation (maglev) transportation
Weihua Zhang, Chengdu (CN); Zigang Deng, Chengdu (CN); Haiquan Bi, Chengdu (CN); Wenxiang Zhou, Chengdu (CN); Jun Guo, Chengdu (CN); Zhigen Xu, Chengdu (CN); Yinchuan Li, Chengdu (CN); and Le Liang, Chengdu (CN)
Assigned to Southwest Jiaotong University, Chengdu (CN)
Filed by Southwest Jiaotong University, Chengdu (CN)
Filed on Oct. 9, 2023, as Appl. No. 18/483,481.
Application 18/483,481 is a continuation of application No. PCT/CN2023/106748, filed on Jul. 11, 2023.
Claims priority of application No. 202211334288.7 (CN), filed on Oct. 28, 2022.
Prior Publication US 2024/0035930 A1, Feb. 1, 2024
Int. Cl. G01M 17/08 (2006.01); B61B 13/08 (2006.01); B61B 13/10 (2006.01); B61B 13/12 (2006.01); B61C 15/04 (2006.01)
CPC G01M 17/08 (2013.01) [B61B 13/08 (2013.01); B61B 13/10 (2013.01); B61B 13/122 (2013.01); B61C 15/045 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A dynamic simulation test platform for evacuated tube magnetic levitation (maglev) transportation, comprising:
an evacuated tube;
a vacuum maintaining system;
a motor supporting platform; and
a test train;
wherein a first end of the evacuated tube is provided with a first isolation door, and a second end of the evacuated tube is closed; a second isolation door is provided inside the evacuated tube; and the second isolation door is configured to divide the evacuated tube into a transition section and a vacuum section;
the vacuum maintaining system is connected to the transition section and the vacuum section;
the motor supporting platform is provided in the evacuated tube, and extends out of the transition section; and the motor supporting platform is provided with a stator and a permanent-magnet track;
a mover and a cryogenic dewar are provided at a bottom of the test train; a superconducting bulk is provided inside the cryogenic dewar; the stator is configured to be energized to generate a driving force with the mover to drive the test train forward; and the superconducting bulk is configured to cooperate with the permanent-magnet track to generate a levitation force; and
the dynamic simulation test platform is configured for:
performing a manual inspection on hardware equipment; and vacuumizing the evacuated tube to reach a first target pressure;
starting an energy storage device of a traction-braking system to perform energy storage until the energy storage is completed;
feeding liquid nitrogen to the cryogenic dewar; connecting the test train to the mover after completing the feeding of liquid nitrogen; transferring the test train and the mover to the transition section; and closing the first isolation door;
opening a first connecting valve between the transition section and the vacuum maintaining system; and vacuumizing the transition section to reach a second target pressure;
opening the second isolation door; opening a second connecting valve between the vacuum section and the vacuum maintaining system; and adjusting a pressure in the evacuated tube to the first target pressure and keeping the pressure in the evacuated tube at the first target pressure;
starting a test and communication system to perform time synchronization and acquisition of test data;
starting the traction-braking system for controlling the test train to accelerate, travel at a constant speed, and decelerate;
saving the test data; turning off the traction-braking system and the test and communication system in turn;
controlling a multifunctional testing vehicle to return the test train to the transition section;
closing the second isolation door; restoring a pressure of the transition section to atmospheric pressure; opening the first isolation door; and moving the test train out of the transition section to a preparation section;
if there is no other test to be conducted in a preset period of time, closing the first connecting valve and the second connecting valve; and closing the vacuum maintaining system to restore the pressure in the evacuated tube to the atmospheric pressure; and
closing the dynamic simulation test platform when a temperature in the evacuated tube reaches an ambient temperature.