Measuring of stagger value is one of the most important items in dynamic testing of contact wire.

Inquire into the OCS of GuangZhou Metro 1 Line to analyze how does the temperature differents affect the condition and maintenance of the OCS, especially analyze the coefficient of expansion of catenary wire and contact wire and how does the temperature differents affect the stagger and distance between two contact wires.

The causations of stagger value over-bound in curve section are analyzed, and formulas of major stagger effecting factors are proposed as well.

It is presented the general frame of a high-speed measuring system for transient contact line stagger value of electric locomotive based on DSP and linear CCD technology.

Offers a feasible means for measuring height of conductor, clearance and stagger value of electric railway OCS.

According to the present staggers and the data tested under train vibration by the inspection cars for overhead contact line equipment in Yingtan Xiamen railway, and the current commonly used compensation algorithm for staggers, a new algorithm which is based on the BP neural network is developed for compensating the staggers of overhead contact network under train vibration.

A device for detecting the excessive staggers of contact wires is described, which is installed on an electric locomotive.

The main detection computer gets real-time data from the slave computer to compensate dynamic staggers of over contact system.

Coupling the fiber pull-out with matrix spalling and neglecting the local bending of fibers in the interface debonding process before fiber pull-out and in the pull-out section,some nonlinear control equations were given to the fiber pull-out process with an iteration method to solve them.