零速までの電気鉄道車両用電気ブレーキ試験台試験 [in Japanese] Plant-test of Electrical Braking to Zero Speed for Railway Vehicles [in Japanese]
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Electric railway vehicles have come to use regenerative braking in normal operations, but not in the total operation range from the top speed to the complete stops (zero speed).<br>Not only in case of lacking regenerative load or electrical braking power, but also in case of lower speed, for example under 10km/h, mechanical braking takes the place of electrical braking.<br>If we realize all electrical braking to zero speed, easier can we use higher deceleration Automatic Train Operation, lighter can be the weight of baking systems, and lesser can be the braking shoe changing maintenance. New control algorithm is necessary for the stable control of electrical braking to zero speed, when the speed sensor becomes to be unable to measure the accurate speed.<br>In this time, we developed halting algorithms with all electrical braking, especially new "Gradient estimating feed forward torque pattern control" algorithm and tested them on our rolling stock test bed. The result shows that a vehicle wheel stopped completely and maintained the halting state more than 5 seconds only by electrical braking, even on the ±20‰ simulated gradient.
- IEEJ Transactions on Sensors and Micromachines
IEEJ Transactions on Sensors and Micromachines 119(3), 405-411, 1999-03
The Institute of Electrical Engineers of Japan