High-speed railway pantograph robust prediction control method based on state estimation

Abstract

The invention discloses a high-speed railway pantograph robust prediction control method based on state estimation. The method specifically comprises the following steps of establishing a nonlinear pantograph-contact network system model; constructing a control-oriented pantograph-contact network system model to obtain a state space equation under the pantograph-contact network system model; adding process noise and measurement noise to obtain an estimation-oriented discrete state equation; determining a pantograph active control target, and augmenting the integral of a contact force trackingerror to a pantograph-contact network system state-space equation on the basis of the pantograph-contact network system model state-space equation to obtain an augmented state-space equation under thepantograph-contact network system model; designing a robust prediction controller; and combining the estimation result to obtain an active control force. The method is advantaged in that effectiveness of the robust prediction control method is studied through a nonlinear pantograph-contact network system model, and control performance of the control method is still good under different working conditions.

Description

technical field [0001] The invention belongs to the technical field of pantograph active control, in particular to a state estimation-based robust predictive control method for high-speed railway pantographs. Background technique [0002] At present, high-speed trains generally use electric traction. The pantograph is a special equipment installed on the high-speed train to collect current from the catenary, so the stable contact state between the pantograph and the catenary is the key to ensure the high quality of the train's current flow. In the evaluation system of the flow quality of high-speed trains, the contact force is a very important index. As the speed of the high-speed train increases, the complex coupling vibration between the pantograph and the catenary will become more severe, which is reflected in the increase in the fluctuation of the contact force and the sharp deterioration of the current quality. The fragile pantograph-catenary system has become a comfor...

AI Technical Summary

Problems solved by technology

As the speed of the high-speed train increases, the complex coupling vibration between the pantograph and the catenary will become more severe, which is reflected in the increase in the fluctuation of the contact force and the sharp deterioration of the current quality. The fragile pantograph-catenary system has become a comfortable A serious obstacle to the improvement of sex and reliability

When the contact force fluctuates too much, the pantograph-catenary system is prone to off-line, arcing, etc., which makes the quality of current receiving worse, and the pantograph is also prone to failure and damage

When the contact force is too large, it not only increases the wear of the pantograph sliding plate, but also increases the operation and maintenance cost of the pantograph-catenary

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