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MASS Design and Engineering
Published in R. Glenn Wright, Unmanned and Autonomous Ships, 2020
The uncrewed RAmora tug is the creation of naval architects Robert Allan Ltd (Vancouver, Canada) as part of their TOWBoT (tele-Operated Workboat or Tug) series of vessels designed to work in tandem with a conventional tug during ship handling [den Hertog, et al. 2016]. Featuring a hybrid propulsion system the vessel is fitted with Voith Schneider propeller drives in a fore/aft configuration. With substantial battery storage capacity, it is highly maneuverable and can provide a bollard pull of up to 55 tons in extended operations and even in hazardous conditions [RAL 2015]. The use of immersive telepresence features provides live 360-degree video and real-time electronic position-sensing to capture a continuous onboard perspective for safe and effective ship handling through remote operation from the command tug. A real-time control system provides the interface for the operator in addition to onboard maneuvering and positioning controls, equipment and workspace monitoring and safety management functionality.
Recent Trends in Water-Use Optimization of Surface Irrigation Systems in Australia
Published in Megh R. Goyal, Susmitha S. Nambuthiri, Richard Koech, Technological Interventions in Management of Irrigated Agriculture, 2018
The system generally predicted shorter irrigation times than those traditionally used by the farmer. This translates to water savings and higher application efficiencies. The field study concluded that the real-time control system is beneficial as it leads to water savings, reduced need for recycling, and potentially lower deep drainage losses. The automated inflow and advance measurement means reduction in the labor requirement. Complete automation of the system will lead to further labor savings. Further development and commercialization of the system, in conjunction with an industry private investor, is still underway (Fig. 3.2).
Smart seru production system for Industry 4.0: a conceptual model based on deep learning for real-time monitoring and controlling
Published in International Journal of Computer Integrated Manufacturing, 2022
Orhan Torkul, İhsan Hakan Selvi, Merve Şişci
In academic research and production practices in Japan, seru production (Seru Seisan) attracts much attention. However, few people know this advanced production management system in the academic and practical field outside Japan (Villa and Taurino 2013). The first English article on Seru production was written by Yin et al. (2008), who described and analyzed the success of seru production systems at Canon and other Japanese companies. Liu et al. (2010), Stecke et al. (2012), Villa and Taurino (2013), Liu et al. (2014), Yin et al. (2017), and Yin, Stecke, and Li (2018) present a detailed introduction of the seru system. When other studies on seru production systems are examined, it is seen that Liu et al. (2013), Ying and Tsai (2017), Lian et al. (2018), and Wu et al. (2018) worked on cross-training and assignment of workers, Liu et al. (2012), Yu et al. (2017) and Ren and Wang (2019) worked on the configuration of the assembly line to serus. Yu et al. (2013), Yu et al. (2014), Li et al. (2017), Singh (2017), Wang and Tang (2017), and Wang and Tang (2018) developed multi-objective optimization models for line-seru conversion. Besides its advantages, the disadvantage of seru type production is that, in assembly lines, specific tasks are completed in specified stations, whereas in seru production, the tasks required for the assembly of a product are completed in a yatai by a cross-trained worker. This, in turn, results in a higher risk of production errors. Because of this reason, a real-time control system is necessary for the seru production system.
Integrated Smart Water Management of the sanitation system of the Greater Paris region
Published in Water International, 2020
Jean-Pierre Tabuchi, Béatrice Blanchet, Vincent Rocher
In 1989, following local protests, it was decided not to increase the capacity of Seine-Aval as originally planned. This decision led to the development of a new sanitation master plan, which was approved in 1997. This scheme introduced three important changes: Downsizing Seine-Aval’s capacity to 1.5 Mm3 instead of 2.7 Mm3 per day. This led to a new distribution of sewage treatment capacities on SIAAP’s territory.Stormwater pollution control due to CSOs. The master plan was designed to avoid untreated CSO spillage for a return period of less than 6 months. With this in view, the construction of a total stormwater storage capacity of 1,693,000 m3 was planned.Implementation of a real-time control system for SIAAP effluents. The studies of the time showed that a real-time control system would allow the reduction of 500,000 m3 in discharges from the sanitation system during heavy rains.
A new TRNSYS component for parabolic trough collector simulation
Published in International Journal of Sustainable Energy, 2018
Vassiliki Drosou, Loreto Valenzuela, Argiro Dimoudi
Fluid temperature measurements were performed with the use of thermocouples mounted in thermowells inserted in the piping (Figure 3). Temperature measurements at both the inlet and outlet of each collector were collected, with the use of type-J thermocouples embedded in the pipe; they had a nominal accuracy of ±2°C, according to the standard IEC 60584.2 (1982). Gauge and differential pressures were measured for each collector by means of coplanar transmitters which presented uncertainties of ±0.06 and ±0.004 MPa, respectively. Mass flow rates for water and steam were obtained with orifice-plate flow meters, resulting in an uncertainty of the mass flow measurements of 0.05 kg/s. Finally, direct normal irradiance (DNI) was measured with a pyrheliometer associated with an instrumental uncertainty of ±10 W/m2. The experimental data were collected by the data acquisition system each 5 s (Lobón et al. 2014). A schematic diagram of the real-time control system is depicted in Figure 4.