Train control device and method and computer program product

Abstract

According to a train control device, generally, a train-speed position detector that detects a speed and a position of a train that includes a driving and braking control device for controlling driving and braking. A control-command calculator calculates a positional deviation of the train on the basis of a result of the detection the train-speed position detector, a train-speed estimate being an estimated value of the speed of the train after a certain length of time, a train-position estimate being an estimated value of the position of the train after the certain length of time, and a certain target deceleration pattern for stopping the train at a certain position, and selects a control command for the driving and braking control device on the basis of the calculated positional deviation.

1 : A train control device comprising:
 a train-speed position detector configured to detect a speed and a position of a train that includes a driving and braking control device for controlling driving and braking of the train; and   a control-command calculator configured to calculate a positional deviation of the train on the basis of a result of the detection of the train-speed position detector, a train-speed estimate, a train-position estimate, and a certain target deceleration pattern, and to select a control command for the driving and braking control device on the basis of the calculated positional deviation, the train-position estimate being an estimated value of the speed of the train after a certain length of time, the train-position estimate being an estimated value of the position of the train after the certain length of time, the certain target deceleration pattern being preset for stopping the train at a certain position.   
     
     
         2 : The train control device according  claim 1 , wherein
 the positional deviation is a deviation between the train-position estimate and a train position on the target deceleration pattern corresponding to the train-speed estimate after the certain length of time.   
     
     
         3 : The train control device according  claim 1 , wherein
 the control-command calculator selects the control command such that the positional deviation falls within a certain allowable range.   
     
     
         4 : The train control device according  claim 3 , wherein
 when the positional deviation does not fall within the allowable range, the control-command calculator selects a control command for a largest driving force or a smallest braking force from among control commands whose train-position estimates come before the certain position and the train position on the target deceleration pattern corresponding to the train-speed estimate after the certain length of time.   
     
     
         5 : The train control device according  claim 3 , wherein
 the control-command calculator sets the allowable range to a narrower range as a speed indicated by the target deceleration pattern decreases.   
     
     
         6 : The train control device according  claim 1 , wherein
 the control-command calculator selects the control command on the basis of a time deviation from the target deceleration pattern.   
     
     
         7 : The train control device according  claim 6 , wherein
 the time deviation is a deviation between a required length of time and a remaining-time estimate after the certain length of time, the required length of time being taken to a target stop position from the train position on the target deceleration pattern corresponding to the train-position estimate after the certain length of time.   
     
     
         8 : The train control device according  claim 6 , wherein
 the control-command calculator selects the control command such that the positional deviation and the time deviation fall within respective allowable ranges.   
     
     
         9 : The train control device according  claim 8 , wherein
 when unable to select the control command such that the positional deviation and the time deviation fall within the respective allowable ranges, the control-command calculator selects a control command on the basis of a ratio at which the positional deviation is offset from the allowable range and a ratio at which the time deviation is offset from the allowable range.   
     
     
         10 : The train control device according  claim 1 , wherein
 the control-command calculator selects the control command such that an amount of change in the control command or in acceleration or deceleration of the train falls within a certain range.   
     
     
         11 : The train control device according  claim 6 , wherein
 the control command is a notch output, and   the target deceleration pattern is generated from certain brake notches, the train control device further comprising:   a characteristic-parameter storage configured to store therein a deceleration characteristic model of the train; and   a characteristic-parameter adjuster configured to adjust the deceleration characteristic model stored in the characteristic-parameter storage on the basis of transition of the control command and the train speed.   
     
     
         12 : A method to be executed by a train control device that controls a train including a driving and braking control device for controlling driving and braking, the method comprising:
 detecting a speed and a position of the train;   calculating a positional deviation of the train on the basis of a result of the detection, a train-speed estimate, a train-position estimate, and a certain target deceleration pattern, the train-position estimate being an estimated value of the speed of the train after a certain length of time, the train-position estimate being an estimated value of the position of the train after the certain length of time, the certain target deceleration pattern being preset for stopping the train at a certain position, and   selecting a control command for the driving and braking control device on the basis of the calculated positional deviation.   
     
     
         13 : A computer program product including programmed instructions embodied in and stored on a non-transitory computer readable medium, wherein the instructions, when executed by a computer, cause a computer to control a train control device that controls a train including a driving and braking control device for controlling driving and braking, and cause the computer to perform:
 detecting a speed and a position of the train;   calculating a positional deviation of the train on the basis of a result of the detection, a train-speed estimate, a train-position estimate, and a certain target deceleration pattern, the train-position estimate being an estimated value of the speed of the train after a certain length of time, the train-position estimate being an estimated value of the position of the train after the certain length of time, the certain target deceleration pattern being preset for stopping the train at a certain position, and   selecting a control command for the driving and braking control device on the basis of the calculated positional deviation.