Anti-Vibration Control of Turntable Ladders by a Steel Rope-Hydraulic Control System
Received: 31 December 2022 | Revised: 1 February 2023 | Accepted: 9 February 2023 | Online: 2 April 2023
Corresponding author: Van Tinh Nguyen
Abstract
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.
Keywords:
aerial extension ladder, anti-vibration control, dynamic equation, steel rope hydraulic control, turntable ladderDownloads
References
J. Neupert, E. Arnold, K. Schneider, and O. Sawodny, "Tracking and anti-sway control for boom cranes," Control Engineering Practice, vol. 18, no. 1, pp. 31–44, Jan. 2010. DOI: https://doi.org/10.1016/j.conengprac.2009.08.003
B. Spruogis, A. Jakstas, V. Gican, V. Turla, and V. Moksin, "Further Research on an Anti-Swing Control System for Overhead Cranes," Engineering, Technology & Applied Science Research, vol. 8, no. 1, pp. 2598–2603, Feb. 2018. DOI: https://doi.org/10.48084/etasr.1774
L. A. Tuan and L. V. Duong, "Neural fractional-order control of telescopic truck cranes," Applied Mathematical Modelling, vol. 108, pp. 807–824, Aug. 2022. DOI: https://doi.org/10.1016/j.apm.2022.04.006
M. D. Duong, Q. T. Dao, and T. H. Do, "Settling Time Optimization of a Critically Damped System with Input Shaping for Vibration Suppression Control," Engineering, Technology & Applied Science Research, vol. 12, no. 5, pp. 9388–9394, Oct. 2022. DOI: https://doi.org/10.48084/etasr.5242
N. Zimmert, A. Kharitonov, and O. Sawodny, "A new Control Strategy for Trajectory Tracking of Fire–Rescue Turntable Ladders," IFAC Proceedings Volumes, vol. 41, no. 2, pp. 869–874, Jan. 2008. DOI: https://doi.org/10.3182/20080706-5-KR-1001.00149
N. Zimmert, A. Pertsch, and O. Sawodny, "2-DOF Control of a Fire-Rescue Turntable Ladder," IEEE Transactions on Control Systems Technology, vol. 20, no. 2, pp. 438–452, Mar. 2012. DOI: https://doi.org/10.1109/TCST.2011.2116021
A. Pertsch and O. Sawodny, "Modelling and control of coupled bending and torsional vibrations of an articulated aerial ladder," Mechatronics, vol. 33, pp. 34–48, Feb. 2016. DOI: https://doi.org/10.1016/j.mechatronics.2015.11.009
V. T. Nguyen, T. Schmidt, and T. Leonhardt, "Effect of pre-tensioned loads to vibration at the ladder tip in raising and lowering processes on a turntable ladder," Journal of Mechanical Science and Technology, vol. 33, no. 5, pp. 2003–2010, May 2019. DOI: https://doi.org/10.1007/s12206-019-0402-2
V. T. Nguyen, T. Schmidt, and T. Leonhardt, "A new active vibration control method on a ladder of turntable ladders," Journal of Mechanical Science and Technology, vol. 35, no. 6, pp. 2337–2345, Jun. 2021. DOI: https://doi.org/10.1007/s12206-021-0506-3
V. T. Nguyen, "Effect of pre-tensioned rope tensions on a ladder structure of turntable ladders," Journal of Science and Technology in Civil Engineering (STCE) - HUCE, vol. 16, no. 1, pp. 138–151, Jan. 2022. DOI: https://doi.org/10.31814/stce.huce(nuce)2022-16(1)-12
V. T. Nguyen, "A solution to increase the flexural stiffness and quickly extinguish vibrations on a ladder of turntable ladders," Tạp chí Khoa học Công nghệ Xây dựng (KHCNXD) - ĐHXDHN, vol. 16, no. 3V, pp. 138–149, Jul. 2022. DOI: https://doi.org/10.31814/stce.huce(nuce)2022-16(3V)-11
"Rules for the Design of Hoisting Appliances," Federeation Europeenne de la Manutention, FEM 1.001, Oct. 1998.
"High rise aerial appliances for fire and rescue service use - Turntable ladders with combined movements - Safety and performance requirements and test methods," European Committee for Standardization, European Standard EN 14043:2014, 2014.
M. J. Burman, S. E. Goodson, and J. D. Aiken, "Telescopic aerial ladders; components; and methods," US20090101436A1, Apr. 23, 2009.
K. G. Aktas and I. Esen, "State-Space Modeling and Active Vibration Control of Smart Flexible Cantilever Beam with the Use of Finite Element Method," Engineering, Technology & Applied Science Research, vol. 10, no. 6, pp. 6549–6556, Dec. 2020. DOI: https://doi.org/10.48084/etasr.3949
M. K. Bak and M. R. Hansen, "Analysis of Offshore Knuckle Boom Crane - Part One: Modeling and Parameter Identification," MIC Journal, vol. 34, no. 4, pp. 157–174, Jan. 2013. DOI: https://doi.org/10.4173/mic.2013.4.1
M. G. Rabie, Fluid Power Engineering, 1st ed. New York, NY, USA: McGraw Hill, 2009.
"Hydraulic Valves Industrial Standard," Parker Hannifin Corporation, 2015. DOI: https://doi.org/10.1016/S1359-6128(15)30365-7
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