Calculation method and control value of static stiffness of tower crane

Yu, Lie

doi:10.1007/s12206-007-1217-0

Cited by 9 publications

(5 citation statements)

References 12 publications

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“…In contrast to the early works in [4][5][6]9,13,14,16,17,19,26,29], the work using a PDE model has lately been found in [1]. In their work, a hybrid PDE-ODE model, under the assumption that the rope length is constant, was developed, providing the asymptotic stability of the closed-loop system and only numerical simulation results.…”

Section: Introductionmentioning

confidence: 99%

Boundary control of container cranes from the perspective of controlling an axially moving string system

Kim

Hong

2009

Int. J. Control Autom. Syst.

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The control objectives in this paper are to move the load of a container crane to its target position and to suppress the transverse vibration of the load. Owing to the fact that the load is hoisted up and down, the crane is modeled as an axially moving string system. The dynamics of the moving string are derived using Hamilton's principle for systems with changing mass. The Lyapunov function method is used in deriving a boundary control law, where the Lyapunov function candidate takes the form of the total mechanical energy of the system. The boundary control law utilizes the hoisting speed as well as the sway angle of the rope at the gantry side. Through experiment, the effectiveness of the proposed control law is demonstrated particularly in the lift-up process of the load.

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Section: Introductionmentioning

confidence: 99%

Boundary control of container cranes from the perspective of controlling an axially moving string system

Kim

Hong

2009

Int. J. Control Autom. Syst.

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“…After the optimal layout [ 22 , 23 ] of a tower crane group in the initial phase, a dynamic safety management system has become a very urgent need to ensure safety during the construction, especially in the large-scale overlapping working areas. Different from single crane safety issue [ 24 , 25 ], the high-speed stable communication, accurate real-time signal processing and effective anti-collision algorithms are core problems dealing with the safety and collaboration issues of tower crane groups. Furthermore, for all tower crane groups in a certain city or province, conventional regulatory approaches for authorities are inspections and spot checks, which cannot obtain the real-time status of each group and maintain long-term monitoring throughout the duration of operation.…”

Section: Introductionmentioning

confidence: 99%

A Practical Application Combining Wireless Sensor Networks and Internet of Things: Safety Management System for Tower Crane Groups

Zhong

Han

et al. 2014

Sensors

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The so-called Internet of Things (IoT) has attracted increasing attention in the field of computer and information science. In this paper, a specific application of IoT, named Safety Management System for Tower Crane Groups (SMS-TC), is proposed for use in the construction industry field. The operating status of each tower crane was detected by a set of customized sensors, including horizontal and vertical position sensors for the trolley, angle sensors for the jib and load, tilt and wind speed sensors for the tower body. The sensor data is collected and processed by the Tower Crane Safety Terminal Equipment (TC-STE) installed in the driver's operating room. Wireless communication between each TC-STE and the Local Monitoring Terminal (LMT) at the ground worksite were fulfilled through a Zigbee wireless network. LMT can share the status information of the whole group with each TC-STE, while the LMT records the real-time data and reports it to the Remote Supervision Platform (RSP) through General Packet Radio Service (GPRS). Based on the global status data of the whole group, an anti-collision algorithm was executed in each TC-STE to ensure the safety of each tower crane during construction. Remote supervision can be fulfilled using our client software installed on a personal computer (PC) or smartphone. SMS-TC could be considered as a promising practical application that combines a Wireless Sensor Network with the Internet of Things.

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“…Guidance mentions such things as independence and impartiality. Different theoretical and experimental works [1] have established that critical or stringent dynamic stresses are incited in the crane during different operations such as load hoisting, instantaneous stop during load lowering and motion over rail joints of different kinds. A more realistic study of the dynamic behavior of crane operation and accurate estimation of dynamic stresses induced , calls for economical design of ladle cranes.…”

Section: Introduction World Without Steel In Recent Days Is Beyondmentioning

confidence: 99%

Dynamical Analysis of Ladle Crane

Roy¹,

Saha²

2014

IJETT

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-Steel industry uses ladle crane as a vital material handling equipment. Design and procurement of the ladle crane is not up to the mark. Type of load, height to hoist, angle of tilt, space etc ascertains the crane specification. Mathematical analysis, taking all these factors has become an important research area. Earlier researches on ladle crane dynamics are not with so details analysis and providing so many feasibilities. Simulation of Ladle Crane dynamics on ladle hoisting and ladle tilting has been discussed. A methodology to build a dynamic of ladle crane is exhibited. The methodology provided, may be used as an assistant tool is proposed so that it will help industrial designer to build or modify a ladle crane model of most technologically innovative and as per requirement and demand. Efficient and effective crane operation is the basic target of this study. A simulation study is made with different parameters to show how these influence the system's performance. A comparative study of efficient drive systems performed and from these a mathematical model is build to analyze, simulate.

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Calculation method and control value of static stiffness of tower crane

Cited by 9 publications

References 12 publications

Boundary control of container cranes from the perspective of controlling an axially moving string system

Boundary control of container cranes from the perspective of controlling an axially moving string system

A Practical Application Combining Wireless Sensor Networks and Internet of Things: Safety Management System for Tower Crane Groups

Dynamical Analysis of Ladle Crane

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