Results 171 to 180 of about 35,260 (224)

Electromechanical modelling of overhead cranes

International Journal of Systems Science, 1992
A non-linear electromechanical model describing the dynamical behaviour of overhead cranes is presented. The model takes into consideration the non-linear dependence of the load sway on transients of driving motors during voltage disturbances and start-ups.
A. M. EBEID, KAMAL A. F. MOUSTAFA, HOSAM E. EMARA-SHABAIK   +2 more
openaire   +1 more source

Optimal control of overhead cranes

Control Engineering Practice, 1995
Abstract A nonlinear dynamic model of an overhead crane which represents simultaneous travel, traverse, and hoisting/lowering motions is considered. Nonlinear feedback forms of control are studied, and numerical results are obtained in such a way that specified boundary conditions and the functional constraints for the states and controls are ...
A.Z. Al-Garni, K.A.F. Moustafa, S.S.A.K. Javeed Nizami   +2 more
openaire   +1 more source

Energy Efficiency of Overhead Cranes

IFAC Proceedings Volumes, 2014
Abstract Energy efficiency is firstly considered into the control of overhead cranes. Based on the model of crane system, energy consumption as well as operational safety is formulated in an optimal control problem. The optimal control is used to search optimal trajectories of velocity and acceleration for minimizing energy consumption.
Zhou Wu, Xiaohua Xia
openaire   +1 more source

Robust Control Schemes for an Overhead Crane

Journal of Vibration and Control, 2001
This paper addresses the control problem of an overhead crane. A variable structure control scheme, a variable structure controller in conjunction with a state feedback control scheme, and a μ-synthesis control scheme are proposed to control the overhead crane.
Karkoub, Mansour A., Zribi, Mohamed
openaire   +2 more sources

Overhead Electric Travelling Cranes

Proceedings of the Institution of Mechanical Engineers, 1937
The installation of an overhead electric crane is often left in the hands of specialist manufacturers. Plant engineers, however, need to ascertain service and performance requirements when considering an installation, and they often rebuild or modify existing cranes in order to reduce production and maintenance costs by improving the reliability of ...
openaire   +1 more source

Intelligent control of overhead gantry cranes

2009 6th International Symposium on Mechatronics and its Applications, 2009
Overhead gantry crane systems have been integral part of many heavy industrial applications needing material handling and transportation. This can easily be seen in emerging countries growing rapidly. Single force control input applied to crane moves it to a desired position but also triggers undesired swing on the payload which makes it an interesting
openaire   +2 more sources

Anti-swing Control of Overhead Cranes

2006 6th World Congress on Intelligent Control and Automation, 2006
In this paper a controller is designed for the overhead cranes using the recently developed parallel differential (PD) eigenevalue assignment methodology. Using this theory, classical results for LTI control design carry over to the time-varying case. The main achievement of this paper is the first implementation of a controller designed using the PD ...
null Lifu Wang, null Xiangdong Wang, null Zhi Kong   +2 more
openaire   +1 more source

Automatic Control of an Overhead Crane

IFAC Proceedings Volumes, 1981
Abstract In the iron and steel industry, the automation and computer control of each manufacturing process has been promoted in order to improve productivity. However, the automation of transportation between manufacturing pro-cesses is lagging behind.
E. Ohnishi, I. Tsuboi, T. Egusa, M. Uesugi   +3 more
openaire   +1 more source

Anti-sway control for overhead crane

2007 International Conference on Control, Automation and Systems, 2007
The models of overhead crane system have been studied in many regulation methods; hence bring about the variation parameter. However, there are have the similar conjecture of angular velocity (thetas dot) in the mathematics models of pendulum system. The angular velocity can be deduced to be zero to perform the simply system as the linear equation form.
null Kitichoke Prommaneewat, null Prapas Roengruen, null Viriya Kongratana   +2 more
openaire   +1 more source

Funnel control for overhead crane model

PAMM, 2018
AbstractWe consider an overhead crane whose control variables are the length of the rope and force/velocity at the gantry. The output consists of the position of the load. The objective is to design a closed‐loop tracking controller which also takes into account the transient behavior. First we show that this system has no well‐defined relative degree,
Thomas Berger, Huy Hoàng Lê, Timo Reis
openaire   +1 more source