| 摘要 |
<p>PURPOSE:To prevent the influence of a noise during transmission by employing a pulse signal of the prescribed period as a brake instruction signal and varying the pulse width of the pulse signal in respose to a brake amount set signal. CONSTITUTION:A brake instruction unit 1 outputs a brake instruction signal S0 of the pulse width in response to a signal A1 from an automatic train operating device AT0 or a signal M from a brake amount setter. A receiver 21 of a brake receiver 2 calculates a brake drive signal Sd on the basis of the signal S0, a control signal A2 from an automatic train controller ATC, a load signal Sa from a train body and a delay signal Sb when a brake force is obtained as composed trains. A controller 23 for a chopper controls an electric brake on the basis of a brake drive signal Sd. A comparison arithmetic unit 22 drives an air brake when the electric brake is insufficient.</p> |
