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Zhengyu Huang, Lingyu Chen, Lianchao Zhang, Shixun Fan and Dapeng Fan
This paper aims to analyze the key factors influencing the synchronization performance of distributed motion control system and to improve the synchronization performance…
This paper aims to analyze the key factors influencing the synchronization performance of distributed motion control system and to improve the synchronization performance for peripherals control of this system.
This paper deals with the software synchronization problems of distributed motion control system based on real-time Ethernet. First, combined with communication and control tasks, the key factors affecting synchronization performance of system are analyzed. Then, aiming at key factors and considering the synchronization of system bus, protocol conversion and task scheduling, a software synchronization method based on CANopen protocol and real-time Ethernet is proposed. Finally, the feasibility of this method is verified by establishing distributed motion control system and testing the synchronization performance of terminal control signals of slaves.
Based on this method, the results show that the synchronization accuracy for peripherals control of all slaves could be about 100 ns.
This research provides high-precision synchronization method, which could lay a foundation for the application of distributed motion control system in the field of assembly automation, such as multi-axis assembly robots control.
In distributed motion control system, many factors affect the synchronization performance. At present, there is no synchronization method that could comprehensively consider these factors. This paper not only analyzes the key factors influencing the synchronization performance of system but also proposes a synchronization method. Therefore, the method proposed in this paper has certain theoretical value and engineering significance.
Hospitality is one of the industries severely impacted by the COVID-19 pandemic. It is vital to comprehend how to help the workforce in this service sector grow resilient…
Hospitality is one of the industries severely impacted by the COVID-19 pandemic. It is vital to comprehend how to help the workforce in this service sector grow resilient through such a crisis. This paper aims to unpack the role of employer event communication in promoting hotel workers’ resilience.
The data were garnered from 462 hotel workers who were on unpaid leave or layoff during the hotel shutdown.
The results unfolded the positive link between employer event communication and hotel workers’ resilience, for which core beliefs examination served as a mediation mechanism. Family support was found to moderate the effect of employer event communication on core beliefs examination.
The findings indicate to hospitality organizations that in face of a crisis such as the COVID-19, their employee resilience can be activated if they implement event communication activities. They should further realize that their support should go hand in hand with family support in fueling employee resilience from the crisis.
This study advances the understanding of how and when to promote resilience among hotel workers during a pandemic crisis.