Idling slide protective control method of locomotive

Abstract

The invention relates to an idling slide protective control method of a locomotive. The method comprises the following steps of: detecting the acceleration d omega / dt of a locomotive wheel pair in real time, when the acceleration exceeds a protective threshold, i.e. domega / dt is more than ag, starting to unload a moment, and continuously searching the peak value of the acceleration, i.e. when d<2>omega / dt<2>=0 in the unloading process, searching the peak value; and instantly stopping to unload the moment when the peak value is searched, wherein the change rate of a motor torque dT / dt is 0, the adhesion of a locomotive wheel track recovers again and the change rate of the adhesive force of the locomotive wheel track dF / dt is more than 0. The invention can overcome the over-deepness unloading problem very well in the prior art, the problem cause the locomotive tractive effort loss to be great, affects the adhesion utilization of the locomotive and causes the front and back impacts of the locomotive.

Description

technical field The invention relates to a locomotive sticking control calculation method, in particular to an idling slide protection control method of a locomotive, which realizes optimal control of locomotive idling slide protection. Background technique The traction force of a locomotive is produced by the adhesion of the wheel and rail. The wheel weight, the elasticity of the wheel and rail material, and the torque applied to the wheel constitute the three elements that generate the traction force of the wheel circumference. As shown in Figure 1, under the action of the wheel load P, the wheel-rail contact part undergoes elastic deformation, forming an elliptical contact area. When the wheel rolls forward under the action of the driving torque T, the wheel-rail material elastically deforms near the contact area, thereby generating a tangential force F on the contact surface. The tangential force F is the circumferential traction force, which makes the wheel roll forwar...

AI Technical Summary

Problems solved by technology

The invention provides a locomotive idling slide protection control method, which can well overcome the existing technology that the unloading depth is too large, which not only causes the locomotive traction loss to be too large, affects the adhesion and utilization of the locomotive, but also causes the front and rear impact of the locomotive question

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