Optimization of Transport Movement Parameters of the Transfer Manipulator for the Quenching Bath According to the Technological Process Requirements

Slivinskas, Kastytis; Gichan, V.; Striška, Vytautas; Poška, Algimantas Juozas

doi:10.4028/www.scientific.net/ssp.164.411

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Such equipment may be realised by applying the Pontryagin's Maximum Principle (Pontryagin et al 1969). Examples of realisation of control equipment based on the Maximum Principle are known in the industry (Slivinskas et al 2010). The research uses the model of an overhead crane developed using the program package MATLAB/Simulink ® .…”

Section: Mathematical Modelmentioning

confidence: 99%

“…-special laws related to cargo moving velocity changes on its acceleration and braking (Tanaka, Kouno 1998); -special filters of the signal that pre-sets the velocity of movement of the cargo attachment point (Slivinskas et al 2010); -special adaptive controls for the crane's drive (Yang, J. H., Yang, K. S. 2007) according to the coordinates; -equipment that in certain moments applies to a force to the cargo and the direction of such a force is opposite to the current deviation of the cargo. A stabilizing force may be also applied to the cargo attachment point by using special control of the crane's engines.…”

Section: Mathematical Modelmentioning

confidence: 99%

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Verhead Crane Anti-Swing System Based on the Pontryagin’s Maximum Principle

et al. 2015

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Overhead cranes are widely used at industrial enterprises for transportation of materials and products. They are successfully adaptable to technological processes used at an enterprise and their exploitation is inexpensive; in addition, the price of cranes is relatively low. However, extension of requirements set for technological processes results in shortened time for transportation and stiffened requirements for accuracy of cargo delivery and cargo safety. In the attempts to satisfy the latter requirements, particular attention is paid to swings of the cargo-holding rope. There is a number of factors that cause increased requirements for the control system of the crane drive. The slewing movement affects the total system of the crane and aggravates the crane movement control. In modern overhead cranes, the abilities and qualification of an operator (who is assisted by a certain anti-swing system) predetermine the cargo swings and the accuracy of its positioning. The said circumstance latterly caused a particular attention to computerisation of overhead crane control. However, a nonlinearity of the mechanical system of a crane and complicated control of swings often cause undesirable swings, in particular in the beginning and the end of cargo transporting process, thus reducing the efficiency of usual crane control systems. In addition, it should be taken into account that the parameters of a crane, as a controlled mechanical system, depend on the cargo and the conditions of its transportation. Consequently, a development of an effective cargo swing reduction system is a currently topical engineering problem.

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Section: Mathematical Modelmentioning

confidence: 99%

Section: Mathematical Modelmentioning

confidence: 99%

Verhead Crane Anti-Swing System Based on the Pontryagin’s Maximum Principle

et al. 2015

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“…Because of this, upon striving to minimize undesired cargo swinging, mechatronic crane control systems are developed. The said purpose is achieved by using drive control systems where input signals are received from sensors involved in registering rope swinging parameters (such as deviation from the vertical axis, swinging acceleration and so on) and drives of the lifting or shifting mechanisms are controlled upon using feedback [1] or fuzzy logic elements [2]. While developing such systems, the rope deformation is not taken into account or its stiffness is considered constant.…”

Section: Introductionmentioning

confidence: 99%

The Dynamic Errors of Mechatronically Controlled Lifting Equipment

Augustaitis

Gičan

Jakštas

et al. 2015

SSP

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Upon striving to ensure the cargo safety and precizity of its delivery, mechatronic control systems are more and more widely applied in lifting mechanisms. They get information from various sensors, including those involved in registering the rope’s deformations. The got information may be distorted because of the appearance of cargo swinging that’s level depends on the mode of operation of the lifting mechanism and the rope’s elasticity. The latter varies dependently on the length of the unwound rope and the way of deformation of rope’s wires. In the paper, a mathematical model of a lifting mechanism that describes its dynamics on lifting when both the cargo and the rope swing in respect of a vertical axis is provided. The model was examined by a special program developed upon using MATLAB and SIMULINK program packages. The obtained dependences of the swing parameters on the mode of operation of the lifting mechanism and the rope’s parameters enable assessing a possible application of the lifting mechanism.

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“…While analyzing electromechanical systems, reliable solutions to the formation of a Simulink-model are obtained in the environment of a MATLAB software package (Gichan et al 2008;Slivinskas et al 2010). A dynamic curve of load movement controlled by the crane also has an impact on the loads of its metal structure (Ju et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Dynamic Reaction Forces of an Overhead Crane on Lifting

et al. 2011

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In the recent period, girder bridge cranes are replaced with double-beam overhead cranes with a rectangular cross-section of the beams. In addition, new materials are used for producing them thus applying other values of allowable loads and deformations. The paper focuses on two overhead cranes working for JSC Vilniaus kranai (Vilnius Cranes). The presented mathematical model provides an opportunity to assess the structural peculiarities of the above introduced cranes. The calculated results of dynamic loads appearing in the beginning and the end of the lifting process and having an impact on the lifting mechanism and metal structure are provided in the article.

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Optimization of Transport Movement Parameters of the Transfer Manipulator for the Quenching Bath According to the Technological Process Requirements

Cited by 3 publications

References 3 publications

Verhead Crane Anti-Swing System Based on the Pontryagin’s Maximum Principle

Verhead Crane Anti-Swing System Based on the Pontryagin’s Maximum Principle

The Dynamic Errors of Mechatronically Controlled Lifting Equipment

Dynamic Reaction Forces of an Overhead Crane on Lifting

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