Prediction of fatigue fractures diffusion on the cableway haul rope

Peterka, Pavel; Kačmáry, Peter; Krešák, Jozef; Šimoňák, Ján; Bindzár, Peter; Mitrík, Dušan

doi:10.1016/j.engfailanal.2015.10.006

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…The counter is controlled by the impulse so that it only works for the duration τ commensurable to the velocity of the wave propagation velocity and also to indirectly measured modulus of elasticity of a steel rope (see Figure 4). The presented hybrid measuring system is implemented in practice and is still functional for the purpose of assessing the quality and damage of the steel rope [28].…”

Section: Hybrid Measuring Systemmentioning

confidence: 99%

Evaluation of Sensor Signal Processing Methods in Terms of Information Theory

Flegner

Kačur

2018

Acta Polytech

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The paper deals with the examination of basic methods of evaluation of sensor signals in terms of the information content of the given method and the used technical means. In this respect, methods based on classical analog systems, digital systems in the time domain of signal processing, hybrid systems and digital systems evaluating signal in the frequency domain are compared. A significant increase in entropy in individual systems is demonstrated in the case of a more complex signal evaluation. For each measuring system, the experimental setups, results, and discussions are described in the paper. The issue described in the article is particularly topical in connection with the development of modern technologies used in the processes and subsequent use of information. The main purpose of the article is to show that the information content of the signal is increased because the signal is more complexly processed.

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Section: Hybrid Measuring Systemmentioning

confidence: 99%

Evaluation of Sensor Signal Processing Methods in Terms of Information Theory

Flegner

Kačur

2018

Acta Polytech

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“…However, due to the relatively late development and incomplete technology of cableway safety monitoring in China, accidents related to cableways are constantly occurring in the Yunnan Xishuangbanna Cableway, Hunan Tianmenshan Cableway, Shanxi Huashan Cableway, Nanjing Zijinshan Cableway, and other areas. In this case, safety monitoring technology is a must to ensure the safe operation of the cableway [ 3 ]. Generally, the support device of the cableway is composed of a steel wire rope and a cableway bracket.…”

Section: Introductionmentioning

confidence: 99%

Zero-Velocity Update-Based GNSS/IMU Tightly Coupled Algorithm with the Constraint of the Earth’s Rotation Angular Velocity for Cableway Bracket Deformation Monitoring

Zhang,

et al. 2023

Sensors

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Cableways have been widely used in industrial areas, cities, and scenic spots due to their advantages, such as being a convenient mode of transportation, time-saving, labor-saving, and low cost, as well as offering environmental protection. To ensure the safe operation of a cableway, based on the characteristic that the velocity of the cableway bracket is approximately zero in a static deformation monitoring environment, a deformation monitoring method called zero velocity update (ZUPT)-based GNSS/IMU tightly coupled algorithm with the constraint of the Earth’s rotation angular velocity was proposed. The proposed method can effectively solve the problem of a single GNSS being unable to output attitude, which is directly related to the status of wire ropes and cable cars. Meanwhile, ZUPT is used to restrain the Kalman filter’s divergence when IMU is stationary. However, the improvements of ZUPT on attitude are not obvious, so the constraint of the Earth’s rotation angular velocity was applied. The performance of the proposed method was evaluated through monitoring the cableway bracket of the Yimeng Mountain Tourism area in Shandong. Compared with the ZUPT-based GNSS/IMU tightly coupled algorithm (ZUPT-TC), the proposed method can further constrain the error accumulation of IMU while stationary and, therefore, it can provide reliable position and attitude information on cableway brackets.

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