Further Research on an Anti-Swing Control System for Overhead Cranes

Spruogis, Bronislovas; Jakštas, Arūnas; Gičan, V.; Turla, Vytautas; Mokšin, Vadim

doi:10.48084/etasr.1774

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…The study on vibration reduction, fast vibration quenching, and anti-swing for load transport equipment has high scientific and practical significance. Various control methods have been proposed to bring the load to the desired position quickly and accurately [1][2][3][4]. This activity makes more sense for turntable ladders because they transport rescued people and should help them feel safe in a rescue basket.…”

Section: Introductionmentioning

confidence: 99%

Anti-Vibration Control of Turntable Ladders by a Steel Rope-Hydraulic Control System

Nguyen

2023

Eng. Technol. Appl. Sci. Res.

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Anti-vibration control of turntable ladders is effective by controlling the steel ropes inserted in the hollow handrails. Previous studies that considered idealized conditions, such as ignoring friction, piston mass, and hydraulic oil compressibility, can not be strongly generalized. This study addresses these problems by describing in detail the equipment serving the anti-vibration solution, building a mathematical model for the steel rope hydraulic control system considering the above factors, and controlling the rapid extinguishing of vibrations on a model simulated in Matlab-Simulink. Furthermore, the simulation of the relationship between the control signal and oil flow through the proportional distribution valve produced a signal flow curve that was asymptotic to the actual. The results showed a difference compared to previous studies. Although the solution was only implemented on the lowest ladder section with the most unfavorable conditions, the time for vibration on the top ladder reached amplitudes of 3 and 5mm in 3 and 5s for empty and full baskets, respectively.

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Section: Introductionmentioning

confidence: 99%

Anti-Vibration Control of Turntable Ladders by a Steel Rope-Hydraulic Control System

Nguyen

2023

Eng. Technol. Appl. Sci. Res.

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“…The vibration of flexible dynamic systems such as live load and flexible beam systems [1][2][3] and flexible robot manipulator and cranes [4][5][6][7][8][9][10][11][12] often causes a decrease in operation speed and accuracy. Due to sensor noise and unmodeled flexible dynamic problems, vibration suppression control using feedback control has often substantial limitations [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Openloop control is effective and widely used for the vibration suppression control of flexible machines. If the vibration dynamics are known with some confidence, then several techniques for modifying commands can suppress the system's vibration [8][9][10][11][12][13]. Among them, input shaping [13], which convolves a sequence of impulses with the command signal, is one of the most attractive techniques.…”

Section: Introductionmentioning

confidence: 99%

Settling Time Optimization of a Critically Damped System with Input Shaping for Vibration Suppression Control

Duong

Dao²,

Do³

2022

Eng. Technol. Appl. Sci. Res.

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The input shaping technique is widely used as feedforward control for vibration suppression of flexible dynamic systems. The main disadvantage of the input shaping technique is the increasing system time response since the input shaper contains time delay parts. However, with the same reference input, the actuator effort in the case of using an input shaper is smaller than the one in the case without an input shaper. Thus, it is possible to decrease the system response time by designing the feedback controller to maximize the actuator effort. This paper proposes a design approach to design the Proportional-Derivative (PD) controller for position control of the actuator so that the settling time of the flexible system with input shaper is minimized. The actuator system with a PD controller is equivalent to a critically damped system, and the condition for the controller gains is established. In addition, the settling time and actuator effort with shaped step input are calculated. The controller gains can be determined by solving the settling time optimization problem with the actuator effort constraint. The effectiveness of the proposed approach is verified via experiments with an overhead crane model.

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Fluctuations of the Cargo Transported by Lifting Crane: Simulation and Analysis

2019

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Introduction. Reducing fluctuations in the load transported by hoisting cranes with a flexible rope suspension of the load is an urgent task since it can significantly reduce the time taken to complete the operation of moving the load. A promising direction for reducing load fluctuations is to optimize the trajectory of movement of the load suspension upper point.Materials and methods. The paper discussed the method of mathematical simulation of plane vibrations of a load moved by a crane with a horizontally moving suspension point, using the software of the MATLAB system. For modeling, the authors used the function of the MATLAB ode45 system, intended for the numerical solution of systems of non-stationary differential equations of arbitrary order.The second-order differential equation used to describe the fluctuations of the transported load and its implementation in the form of program code was presented. Moreover, the authors demonstrated the elements of program code for the analysis and visualization of simulation results.Results. The authors obtained and presented the series of graphs in the inclination angle’s changing of the cargo rope, the acceleration of the suspension point and the value of the objective function with the sinusoidal nature of the acceleration. The objective function was the sum of the absolute values of the deflection angle of the rope and the first derivative at the final moment of the suspension point’s movement with acceleration.Discussion and conclusions. As a result, the paper shows that the system with energy dissipation does not reach the zero value of the objective function even by a symmetrical nature of acceleration and deceleration of the suspension point. Therefore, it is necessary to give asymmetry to the acceleration and deceleration periods of the suspension point in order to completely absorb the residual fluctuations of the load.

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Further Research on an Anti-Swing Control System for Overhead Cranes

Cited by 4 publications

References 22 publications

Anti-Vibration Control of Turntable Ladders by a Steel Rope-Hydraulic Control System

Anti-Vibration Control of Turntable Ladders by a Steel Rope-Hydraulic Control System

Settling Time Optimization of a Critically Damped System with Input Shaping for Vibration Suppression Control

Fluctuations of the Cargo Transported by Lifting Crane: Simulation and Analysis

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