Abstract: Crane hook is a curved beam. Hooks are employed in heavy industries to carry tones of loads safely. These hooks have a big role to play as far as the safety of crane loaded is concerned. With more and more industrialization the rate at which these hooks are forged are increasing. This project is carried out to study the stress variation in crane hooks for different cross sections such...

There are differences between the two most popular models, ITU terrestrial model and Crane model. Crane has produced three models; the Crane Global model, Crane two-component model, and revised Crane two-component model that produce slightly different estimates of the long term mean fade probability. The Crane models tend to produce higher attenuation than the ITU model. But the uncertainty of ...

Original scientific paper The floating cranes, which transfer payloads during offshore constructions, need meet rigorous demands for efficiency and safety in serious sea conditions while the unexpected motion of the floating crane caused by wave make it even harder. This paper analyses the dynamics of a floating crane and presents an active heave compensation system (HCS) to allow the payloads ...

In this paper a novel dynamical model will be developed for an overhead crane with transverse vibrations of flexible cable while considering large angle of the cable/payload swing. The major problem addressed is expressing the dynamic interaction between the cables and other elements in the crane system which demands investigation into boundary induced cable vibrations and large swing angle. Th...

This paper proposes a simple but efficient technique to control 3D overhead crane. Load must track a desired path and not sway more than a reasonable range.The proposed method uses PID control for trolley to track the desired path and fuzzy control compensation to eliminate the load swing. Only the projection of swing angle is applied to design the fuzzy controller. No plant information of cran...

The Black Crowned Crane Balearica pavonina is a resident of the Sahel and Sudan Savanna regions of Africa, ranging from the Senegal Basin and Guinea-Bissau Drainage in West Africa to the Western Ethiopian Highlands and South-West Rift Valley in East Africa. There are two black crowned-crane subspecies. The West African Crowned Crane, Balearica pavonina pavonina occupies the western part of this...

in this study, a new servo control system is presented for the overhead crane based on discrete-time state feedback approach. it provides both robust tracking and load swing suppression. inspired from independent joint and computed torque control in robot manipulator field, a new model is derived in which the crane actuators are considered as the main plant. the crane nonlinearities are then tr...

This paper presents the use of anti-sway angle control approaches for a two-dimensional gantry crane with disturbances effect in the dynamic system. Delayed feedback signal (DFS) and proportional-derivative (PD)-type fuzzy logic controller are the techniques used in this investigation to actively control the sway angle of the rope of gantry crane system. A nonlinear overhead gantry crane system...

Control of a hydraulic crane is considered Due to the oscillatory character of the system smooth the operation of the crane is a demanding task In order to improve the handling properties feedback control of the crane is studied Based on linearized models feedback regulators of both LQG and PID type are designed The feedback is based on position pressure and acceleration measurements Since the ...

This paper summarizes the most important advances of the used crane control technology in perspective of unmanned operation of container cranes. Unmanned operation with remote control support today is available for almost all types of new/existing rail mounted container cranes. Storage capacity is the limitation for most terminals today; unmanned operation offers optimum stacking density and pe...