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Method for controlling and possibly restoring the adhesion of the wheels of a controlled axle of a rail vehicle

A rail vehicle, adhesion technology, applied to the direction of the vehicle's signal indicator, vehicle control route device, brakes, etc., can solve problems such as long time

Active Publication Date: 2021-06-15
FAIVELEY TRANSPORT ITAL SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0046] Also, the process of adjusting the optimum slip value takes a considerable amount of time

Method used

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  • Method for controlling and possibly restoring the adhesion of the wheels of a controlled axle of a rail vehicle
  • Method for controlling and possibly restoring the adhesion of the wheels of a controlled axle of a rail vehicle
  • Method for controlling and possibly restoring the adhesion of the wheels of a controlled axle of a rail vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0065] As will become more clear from what follows, the method according to the invention allows to identify the optimum value of the slip δ(t), which allows the adhesion obtained as an average value between the instantaneous adhesions of all axles value is maximized, the mean value is defined as follows:

[0066]

[0067] Said method according to the invention intervenes at the beginning of the slip phase and corrects said optimum value of δ(t) in real time and continuously over time, adapting it to the value μ i Possible variation of (δ,t) (adhesion of the i controlled axles), the method can intervene during coasting in order to tend to the average value of held at the maximum value.

[0068] The method according to the invention uses an adhesion observer for one or more axles during the slip phase to evaluate in real time the adhesion values ​​μ at the contact points between the wheel and the rail, and processes these μ values ​​in real time by to continuously identif...

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PUM

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Abstract

A method for controlling and recovering the wheels during the slip phase (W i ) method of adhesion of the wheels belonging to at least two controlled axles (A i ), the method comprises the steps of: generating an indication of the wheel (W i ) angular velocity (ω i ) speed signal; use the adhesion observer (701; 1001; 1201) to estimate the speed at such wheels (W i ) and the instantaneous adhesion at the contact point of the track (μ(T j )) value; the adhesion value estimated by processing (μ i (T j )) to generate the controlled axle (A i ) of the wheel (W i ), and correct the target slip value continuously and in time with a predetermined sampling period (T), so as to maximize the average value of the adhesion of the wheels of the vehicle.

Description

technical field [0001] The invention relates to a method for controlling the adhesion of a wheel of a controlled axle of a rail vehicle. Background technique [0002] The electronic system is mounted on the floor of most modern rail vehicles, which typically include a wheel slip control subsystem adapted to intervene both when the vehicle is in the traction phase and when the vehicle is in the braking phase. These subsystems are known as anti-skid or anti-skid systems, or also WSP (Wheel Slip Protection) systems. [0003] A system with antiskid function for controlling the adhesion of wheels according to the prior art is schematically represented in the attached drawing figure 1 In , the system involves a vehicle with n controlled axles A1, A2, . . . , An. The axles A1, A2, ..., An include respective shafts S1, S2, ..., Sn and respective pairs of wheels W1, W2, ..., Wn integrally rotating with the shafts. [0004] In the figures, generally only one wheel of each axle is s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/17B60T8/1761B60T8/174
CPCB60T8/1705B60T8/174B60T8/17616B60T8/17B61L15/0058B61L15/0062B61L15/0072
Inventor 罗伯托·蒂奥内
Owner FAIVELEY TRANSPORT ITAL SPA