This paper presents the monitoring horizontal and vertical displacements of railway
which heavy cranes run on using special geodetic techniques for the purpose provaiding
rialway stability and safe working cranes on it. To quaranty that heavy crane
s work safly, a
rialway should be just horizontal– a small error of milimeters leveling is allowed according
to working conditions for cranes. A rialway shoud also maintain its spaces to facilitate the
crane motion on it. Monitoring railway vertical displacements involve measuring the
relative vertical displacements of target points that are distributed along the railway in two
cases: static and dynamic. vertical displacements determined by precise leveling which are
performed using digital high accuracy level. The precise leveling measurments of target
points have been connected to stable benchmark that are located in surrounding terrain of
railway for purpose of further studies. In this paper the alignment method was used to
monitoring the railway horizontal displacements using digital rulers and total station
provided by a prism fixed forcely on the railway. This is done by measuring the small bias
angles of the targat points which are distributed along the railway. This research has
illustrated the efficiency of alignment method in order to calculate the horizontal
displacements of railway axis.
This research includes a geodetic study for the rehabilitation of damaged bridge
cranes axes, its reconstruction and calibration in order to invest in the production process.
The beginning was devoted to studying the types of bridge cranes used in
large factories,
geodetic methods used in their construction, and the conditions that must be achieved by
axes. Based on the previous conditions, we have proposed a geodetic method to
rehabilitate cranes. Also, a computer program has been prepared to implement the
proposed mechanism by (mat lab). Testing the proposed method I has been done with the
program on actual examples. The program was tested in two main cases:
-First: When installing bridge cranes axes,
-Second: In the periodic monitoring (systematic control) for bridge cranes.
The research has proved the possibility of using the proposed method in
rehabilitation, installation, periodic monitoring. It also has showed the efficiency of the
proposed computer program.
This search includes studying of automated mobile cranes to reduce incidence of
inversing which often happens due to payload swaying that requires controlling system at
the crane's site to reach Target position and another controlling system to red
uce payload
swaying as possible while the crane is in motion.
Despite the development of controlling systems that adjust the operation and
functions of these cranes, the repetition of accidental tips in these cranes lead us to look for
hybrid fuzzy controlling system comparing it with PID controlling system. So, it will
improve the performance of these cranes through the reduction of payload swaying and
precise control of crane’s position.
The PID controller and Hybrid Fuzzy PID controller were simulated using Matlab
Software and the results were compared to reach the best controlling system for the crane.
