Development of the autonomous decentralized train control system

This paper introduces a new digital ATC (Automatic Train Control device) sy stem. In the current ATC, the central ATC logic device calculates permissiv e speed of each blocking section and controls speed of all trains. On the o ther hand, in the new digital ATC, the central logic controller calculates each position to which a train can move safely, and sends the information o n positions to all trains. On each train, the onboard equipment calculates an appropriate braking pattern with the information, and controls velocity of the train. That is, in the new system, the device on each train autonomo usly calculates permissive speed of that train. These special features real ize ideal speed control of each train making full use of its performance fo r acceleration and deceleration, which in turns allows high-density train o perations.