Train control method and device based on position type digital control

Abstract

The invention provides a train control method and device based on position type digital control, and the method comprises the steps: determining an equal percentage characteristic curve corresponding to a control instruction according to the control instruction issued to a train in a current control period, calculating a first PWM duty ratio for controlling the train in the current control period based on a position type PID control algorithm; according to a pre-calculated second PWM duty ratio for controlling the train in the previous control period, the first PWM duty ratio and the equal percentage characteristic curve, determining the PWM duty ratio for controlling the train at each moment in the current control period; and controlling the train according to the PWM duty ratio for controlling the train at each moment in the current control period. Under the condition that the control efficiency of the train is guaranteed, the stable control over the train is achieved, slipping is not prone to occurring, and energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of train control, in particular to a train control method and device based on positional digital control. Background technique [0002] Train control is the basis for safe, stable and comfortable train operation. At present, most trains use DC motors as the driving force and actuators, and the control of motors generally uses PWM (Pulse Width Modulation, pulse width modulation) technology. The current train control system usually adopts a positional PID (Proportion, Integral and Differential, proportional, integral and differential) control algorithm, and the on-board controller of the train calculates the PWM duty cycle of the next control cycle according to the current control error and the error change rate u, and then apply the control output u to the vehicle. [0003] Among them, there are two ways in which the control output is applied to the vehicle. One application method is to directly apply the c...

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a train control method and device based on positional digital control, which is used to solve the defects of the train control method in the prior art that the train is shaking, easy to slip, consumes a lot of energy, and has low control efficiency, so as to realize stable control of the train. Control, not easy to slip, reduce energy consumption, improve control efficiency

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