Proactive Maintenance Model Based on the Law on Change of Mechanical Vibration

Otić, Goran; Jovanov, Goran; Adamović, Živoslav; Jovanov, Nemanja; Jaćimovski, Stevo

doi:10.12700/aph.18.4.2021.4.9

Cited by 6 publications

(7 citation statements)

References 5 publications

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“…Demirtaş et al [56,57] combined recursive least squares (RLS) and forgetting factor algorithms to remove the limiting characteristics of classical perturbation observers for non-minimum phase systems. The results showed that the system stability was maintained in the presence of disturbances and time delays.…”

Section: Disturbance Observation Compensation Methodsmentioning

confidence: 99%

Review and Comparison of Clearance Control Strategies

et al. 2022

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The nonlinearity of clearance has a significant influence on the performance of a system while ensuring the reliability of the variable-speed transmission, and hinders the development of the controlled object according to the predetermined trajectory. Aimed at the transmission clearance problem in different systems, this study summarizes the existing literature and provides a reference for the research and compensation of clearance characteristics. First, the influence of clearance on system performance is analyzed and summarized, and it is shown that the existence of clearance causes problems, such as system response delay and limited cycle oscillation. Then, the control strategies for studying clearance are introduced, which are mainly divided into the control strategy based on the clearance model and the non-clearance model control strategy, and these are respectively explained. Finally, some opinions are proposed for the perfection and development of future clearance nonlinear control theory. Ideas for realizing the suppression of the adverse effects of clearances have their characteristics, and in practical applications, the difficulty of implementation and cost control should be comprehensively considered. In the future, to cope with complex and changeable environments, the clearance control strategy will continue to be optimized.

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Section: Disturbance Observation Compensation Methodsmentioning

confidence: 99%

Review and Comparison of Clearance Control Strategies

et al. 2022

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“…In the diagram, in addition to the correct condition (1), we also have a condition with tolerable (permissible) failure, i.e. a condition with the presence of interference (2), a condition with impermissible (non-tolerant, dangerous) failure ( 3) and a condition of system safety blocking (4).…”

Section: Reliability Modeling Of Data Transmission Systemsmentioning

confidence: 99%

“…The key goal of the proper functioning of any transport system is to reach the highest level of reliability at any stage of the transport process [1][2][3]. The main features besides the reliability of these systems is that they must be available, sustainable, safe [4][5][6] and competitive [7,8]. In order to ensure all this within the railway systems, the reliability of the DCS (data communication system) is of great importance [9].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Reliability and Availability of Data Transmission in Railway System

Brkić¹,

Adamović²,

Bukvić³

2022

adeletters

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The analysis of the reliability and availability of the data transmission system within the integral railway system is realized through the modeling of the system, i.e. its conditions and their connections. According to the defined measure of safety of the International union of railways (UIC) i.e. its committee ORE, defined by recommendations A 158 and A 124/RP, based on previous experience and the achieved level of technical development, we can estimate an acceptable value for the probabilities of certain conditions of the integral railway system and data transmission system. In the paper, the reliability and availability analysis was modeled using the Markov model for data transmission in the railway system with four conditions, for: correct system condition, presence of disturbances in the system, illegal (dangerous) system condition and system blocking condition. The validity for the application of process development modeling the reliability and availability of data transmission in the railway system will contribute to reducing the risk of inadmissible (dangerous) failures, improving maintenance planning and spare parts planning, moving from maintenance by time to maintenance by condition and reducing exploitation costs.

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“…Even the smallest voltage imbalance can cause significant motor current. [2] A. The practice of maintenance Most of the errors can be detected with the help of planned preventive maintenance.…”

Section: Introductionmentioning

confidence: 99%