In the Yamanashi Maglev (magnetic levitation) Test Line, running tests commenced on 3 April 1997, and have progressed well. The world record 552km/h run of manned 5-car unit was attained on 14 April 1999. “Reliability verification tests” are being planned for fiscal 2000. Tests that will include running tests at 500km/h, the target maximum speed for operational lines, will be repeated to verify reliability and durability. Concerning to LSM-drive-control, driving control system has performed well from high speed over 500km/h to stopping. For remarkable example, the Maglev train can be stopped within the deviation of 2.5cm errors. One of the important functions of running control for operational lines is minute-distance control called “Inching control”. When the deviation of stooping is beyond allowable errors, we have to correct stopping location of train with the Inching control accurately and quickly.
In this paper, we propose the Inching control method. Firstly we explain the flow and running pattern of inching control. Secondly we propose the inching control loop. Inching control comprises 3 main control loops, feed-forward loop of disturbance compensation, feedback loop of PID location control and two-out-of-three power feeding control. Finally we verify the effectiveness of the Inching control by experimental results of 10cm inching.
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