scholarly journals Study of drive currents for lifting bridge cranes of metallurgical enterprises for early diagnosis of load excess weight

2021 ◽  
Vol 247 ◽  
pp. 1-10
Author(s):  
Irina Semykina ◽  
Mikhail Kipervasser ◽  
Alexander Gerasimuk
Keyword(s):  
Excess Weight ◽  
Overhead Crane ◽  
Structural Elements ◽  
Overload Control ◽  
Overhead Cranes ◽  
Emergency Situations ◽  
Stator Current ◽  
Mechanical Methods ◽  
Drive Motor ◽  
Load Mass

The article discusses an approach based on the analysis of the drive motor currents to create an additional means of protection against emergency situations during the operation of bridge cranes associated with lifting a load with a mass exceeding the permissible one. A mathematical model of an overhead crane drive is described, as well as the results of computer simulation. It is shown that in the process of lifting up, before the stage of lifting the load, the stator current of the drive electric motor does not depend of the load mass, but when the load is detached, already for several periods of the mains voltage after the rope is pulled, when the mass of the load is exceeded, a measurable excess of the amplitude value of the current is recorded. This pattern has been confirmed for a number of cranes of various lifting capacities used at metallurgical enterprises. The possibility of diagnosing excess weight of the lifted load with a higher speed than existing mechanical methods of overload control is demonstrated, at the same time it is not required to make changes to the structural elements of overhead cranes.

Energy-Based Approach for Controller Design of Overhead Cranes: A Comparative Study

2013 ◽  
Vol 365-366 ◽  
pp. 784-787 ◽  
Author(s):  
Nguyen Quang Hoang ◽  
Soon Geul Lee
Keyword(s):  
Closed Loop ◽  
Controller Design ◽  
Asymptotically Stable ◽  
Overhead Crane ◽  
Overhead Cranes ◽  
Swing Angle ◽  
Optimal Linear ◽  
Linear And Nonlinear ◽  
Invariance Theorem ◽  
Lyapunov Technique

In this paper, five controllers including linear and nonlinear ones for an underactuated overhead crane are derived based on the passivity of the system. The total energy of the system and its square are used in Lyapunov candidate function to design controllers. The equilibrium point of the closed loop is proven to be asymptotically stable by the Lyapunov technique and LaSalle invariance theorem. In addition, the optimal linear controller is also combined to force the swing angle to converge fast to zero by reaching destination of the trolley. Numerical simulations are carried out to evaluate the controllers.

scholarly journals The Time Delay Filtering Method for Cancelling Vibration on Overhead Transportation Systems Modelled as a Physical Pendulum

2007 ◽  
Vol 14 (1) ◽  
pp. 53-64 ◽  
Author(s):  
G. Peláez ◽  
J. Doval-Gandoy ◽  
N. Caparrini ◽  
J.C. García-Prada
Keyword(s):  
Time Delay ◽  
Dynamic Response ◽  
Transportation Systems ◽  
Overhead Crane ◽  
Physical Pendulum ◽  
Filtering Method ◽  
Overhead Cranes ◽  
Simple Pendulum ◽  
Pendulum Model

An investigation of the response of a physical pendulum to time delay filtered inputs was conducted. It was shown that the physical pendulum model is more accurate than the simple pendulum for modelling the dynamic response of overhead cranes with loads hanging from hooks. Based on the physical pendulum model a Specified Time Delay filter for an experimental mini overhead crane was synthesized. While somewhat limited in the scope by the hardware conditions placed in the system, the results provide basic insights into the successful application of the Time Delay Filtering method to overhead cranes.

A Novel Wave-Form Command-Shaping Control With Application on Overhead Cranes

2010 ◽  
Author(s):  
Khaled A. Alhazza ◽  
Ziyad N. Masoud
Keyword(s):  
Harmonic Oscillator ◽  
Control Strategy ◽  
Wave Form ◽  
Overhead Crane ◽  
Command Shaping ◽  
Overhead Cranes ◽  
Simple Harmonic Oscillator

In this work, a novel continuous command-shaping control strategy for a simple harmonic oscillator is proposed and implemented on an overhead crane model. A Wave-Form (WF) acceleration command profile is derived analytically, and its performance is validated numerically. To enhance the performance of the proposed command-shaping control strategy, a Modulated Wave-Form (MWF) acceleration command profile is derived. It was determined that the proposed Wave-Form and Modulated Wave-Form command profiles are capable of eliminating the travel and residual oscillations. Furthermore, unlike traditional impulse and step command-shaping, the proposed command profiles have smoother intermediate acceleration, velocity, and displacement profiles.

scholarly journals Perancangan Pengontrolan Overhead Crane Menggunakan Kabel dan Nirkabel Berbasis Arduino

2019 ◽  
Vol 7 (2) ◽  
pp. 76-84
Author(s):  
Ari Novriadi
Keyword(s):  
Data Communication ◽  
Control Design ◽  
Overhead Crane ◽  
Point Contacts ◽  
Push Button ◽  
Crane Control ◽  
Overhead Cranes ◽  
Usb Host ◽  
Contact Points ◽  
Heavy Equipment

Overhead Crane is a heavy equipment which is very much found in various industries, factories, and workshops that are used to transport material. In general, controlling the Overhead Crane is operated by using a Push Button that is hung together with a cable on the top frame of the Overhead Crane. in this case, humans must also be able to maintain a distance when controlling Overhead Cranes that are working to transport memterials to avoid the use of Overhead Cranes. To provide security and comfort in the use of Overhead Cranes, the authors designed an Overhead Crane controller using Arduino based cable and wireless. The design of Overhead Crane control using a cable consists of several series of Push Button arranged in a plastic box and then hung on the side of the Girder Crane. for the input foot the Push Button is given a voltage 12 VDC, while the output of the Push Button is connected with contact points of the Relay 12 VDC to execute electrically mechanical Overhead Crane. While the Overhead Crane control design using wireless consists of several components, including: Arduino Mega 2560 which is combined with USB Host Shield. Bluetooth csr 4.0 Dongle is connected to the USB Host Shield port for data communication media between Arduino Mega 2560 with Bluetooth Joystick PlayStation 3 (PS3). The signal pin of the Relay modules is connected with Arduino Mega 2560 pins according to the program designed. Contact NO points Relay modules are connected with 12 VDC Relay point contacts to execute electrical mechanical Overhead Crane.

A Single Phase Anti-Swing Fuzzy Logic Controller for an Overhead Crane With Hoisting

2006 ◽  
Author(s):  
Mohamed B. Trabia ◽  
Jamil M. Renno ◽  
Kamal A. F. Moustafa
Keyword(s):  
Fuzzy Logic ◽  
Single Phase ◽  
Fuzzy Logic Controller ◽  
Inverse Dynamics ◽  
Operating Conditions ◽  
Overhead Crane ◽  
Fuzzy Logic Controllers ◽  
Overhead Cranes ◽  
Novel Approach ◽  
Logic Controllers

This paper presents a novel approach for automatically creating anti-swing fuzzy logic controllers for overhead cranes with hoisting. This approach uses the inverse dynamics of the overhead crane to determine the ranges of the variables of the controllers. The control action is distributed among three fuzzy logic controllers (FLCs): travel controller, hoist controller, and anti-swing controller. Simulation examples show that the proposed controller can successfully drive overhead cranes under various operating conditions.

Automated Control and Optimisation of Overhead Cranes

2017 ◽  
Vol 7 (3) ◽  
pp. 41-68
Author(s):  
Ashwani Kharola ◽  
Pravin P. Patil
Keyword(s):  
Gantry Crane ◽  
Automated Control ◽  
Computing Technique ◽  
Fuzzy Controllers ◽  
Overhead Cranes ◽  
Triangular Shape ◽  
Simulink Model ◽  
Load Swing ◽  
Varying Mass ◽  
Load Mass

This study considers a fuzzy based computing technique for control and optimising performance of overhead gantry crane. The objective is to minimise load swing and stabilise crane position in the least possible time. The fuzzy controllers were designed using nine gaussian and triangular shape membership functions. The results clearly confirmed the effect of shape of memberships on performance of fuzzy controllers. Performance of overhead crane was measured in terms of settling time and overshoot. The study also demonstrates the influence of varying mass of the load, mass of crane and length of crane bar on stability of the crane. A mathematical model of the crane system has been derived to develop a simulink model of proposed system and performing simulations.

Online Design and Price Quotations for Complex Product Assemblies: The Case of Overhead Cranes

1999 ◽  
Author(s):  
Raj Veeramani ◽  
Tushar Mehendale
Keyword(s):  
Real Time ◽  
Retail Industry ◽  
The Internet ◽  
Prototype System ◽  
Overhead Crane ◽  
Manufacturing Companies ◽  
Complex Product ◽  
Overhead Cranes ◽  
Price Quotation ◽  
Online Design

Abstract Several companies, particularly in the retail industry, have successfully employed E–Commerce for promoting and selling of their standard, catalog products over the Internet. However, the majority of manufacturing companies deal with modified–standard and custom products, not standard, catalog products. In this paper, we describe how even manufacturers of complex product assemblies can take advantage of E–Commerce technologies for online design, configuration and price quotation in real–time, based on customer specified product requirements. We illustrate a prototype system in the context of an overhead crane manufacturer.

The Analysis of Ecologically Safe Operation of Oil Pipelines by Methods of the Stochastic Theory of Similarity

2020 ◽  
Vol 24 (10) ◽  
pp. 57-61
Author(s):  
T.V. Zinets ◽  
A.M. Gonopolsky
Keyword(s):  
Stochastic Theory ◽  
Environmental Safety ◽  
Structural Elements ◽  
Safe Operation ◽  
Nature Protection ◽  
Factors Affecting ◽  
Oil Pipeline ◽  
Emergency Situations ◽  
Main Pipelines ◽  
Oil Pipelines

In article it is shown that in the analysis of conditions of environmental safety of the main oil pipelines (MOP) with use of methods of the stochastic theory of similarity, it is necessary to consider not only the MNP design-technology parameters, but also various chemical mass-exchanged processes, for example, corrosion (oxygen, sulphurous and chloric corrosion), influencing changes of structural elements in time and space. For these reasons, dependences between parametrical criteria of similarity and their communications with stochastic criteria of similarity are the basis for the developed model. Comparative analysis was carried out by results of a research more than 70 emergency situations, at transportation of oil through the main pipelines of 18 companies. In parameters of accidents criteria ratios between the factors affecting environmental safety of MNP are received. It is established that average specific intensity of accidents on routes of the sites of the oil pipeline equipped adjustable and unregulated nature protection to constructions and the equipment and also without them, correspond as 1:4.9:83.5. It is shown that a ratio of costs of compensation of ecological damage in case of accidents on routes of the same sites of the oil pipeline equipped adjustable and unregulated nature protection to constructions and the equipment and also without them approximately correspond as 1:1.9:7.5.

An Anti-Swing and Positioning Controller for Overhead Cranes Based on Multi-Sliding Mode Method

2012 ◽  
Vol 468-471 ◽  
pp. 328-334 ◽  
Author(s):  
Wei Min Xu ◽  
Bo Liu ◽  
Jian Xin Chu ◽  
Xian Wen Zhou
Keyword(s):  
Sliding Mode ◽  
System Model ◽  
Control Input ◽  
Overhead Crane ◽  
Overhead Cranes ◽  
Accurate Knowledge ◽  
Nonlinear Mechanical ◽  
Mode Method ◽  
Position Regulation ◽  
Nonlinear Mechanical Systems

Overhead cranes are essentially a kind of complex underactuated nonlinear mechanical systems, and it is a challenge to design an anti-swing controller for overhead cranes, hence, many people design controllers of overhead cranes ignoring the changing of the rope length and other parameters. In this study, we propose a multi-sliding mode controller to solve the problem of anti-swing and positioning controller for an overhead crane with rope length variations. This controller can provide a simultaneous trolley-position regulation, sway suppression, and load hoisting control. Also, this paper adopts a new method to decrease the chattering of the control input. Stability analysis of the proposed controller is given in the paper. The proposed controller does not rely on the accurate knowledge of overhead crane system model, and it is simple and easy to apply, and robust to disturbances. The simulation results show the good performance of the proposed controller.

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