In this article, research was conducted to improve Linter machines that remove short fibers remaining in ginned cotton seeds at cotton ginneries. The study examined the effect of changing the dimensions of the brush d...In this article, research was conducted to improve Linter machines that remove short fibers remaining in ginned cotton seeds at cotton ginneries. The study examined the effect of changing the dimensions of the brush drum, guide and mesh surface in the cleaning device proposed for the linting machine on the movement of the peg and the cleaning efficiency, and the highest level of efficiency in separating impurities from the peg was determined. During the study, the main factors influencing the effective operation of the improved linting machine were identified, the limits of their values were determined, and studies were carried out using the mathematical modeling method. As a result, at the values of the given coefficients, efficient operation of the improved linting machine was observed, that is, the lint cleaning efficiency reached 55.1%.展开更多
Reconfigurable photonic integrated circuits(PICs)can implement arbitrary operations and signal processing functionalities directly in the optical domain.Run-time configuration of these circuits requires an electronic ...Reconfigurable photonic integrated circuits(PICs)can implement arbitrary operations and signal processing functionalities directly in the optical domain.Run-time configuration of these circuits requires an electronic control layer to adjust the working point of their building elements and compensate for thermal drifts or degradations of the input signal.As the advancement of photonic foundries enables the fabrication of chips of increasing complexity,developing scalable electronic controllers becomes crucial for the operation of complex PICs.In this paper,we present an electronic application-specific integrated circuit(ASIC)designed for reconfiguration of PICs featuring numerous tunable elements.Each channel of the ASIC controller independently addresses one optical component of the PIC,and multiple parallel local feedback loops are operated to achieve full control.The proposed design is validated through real-time reconfiguration of a 16-channel silicon photonics adaptive universal beam coupler.Results demonstrate automatic coupling of an arbitrary input beam to a single-mode waveguide,dynamic compensation of beam wavefront distortions and successful transmission of a 50 Gbit/s signal through an optical free-space link.The low power consumption and compactness of the electronic chip provide a scalable paradigm that can be seamlessly extended to larger photonic architectures.展开更多
文摘In this article, research was conducted to improve Linter machines that remove short fibers remaining in ginned cotton seeds at cotton ginneries. The study examined the effect of changing the dimensions of the brush drum, guide and mesh surface in the cleaning device proposed for the linting machine on the movement of the peg and the cleaning efficiency, and the highest level of efficiency in separating impurities from the peg was determined. During the study, the main factors influencing the effective operation of the improved linting machine were identified, the limits of their values were determined, and studies were carried out using the mathematical modeling method. As a result, at the values of the given coefficients, efficient operation of the improved linting machine was observed, that is, the lint cleaning efficiency reached 55.1%.
基金supported by the Italian National Recovery and Resilience Plan(NRRP)of Nex tGeneration EU,partnership on“Telecommunications of the Future”(Program“RESTART”,Structural Project“Rigoletto,”and Focused Project“HePIC”)under Grant PE00000001.We thank Polifab,the nanofabrication facility of Politecnico di Milano,for dicing and wire-bonding the chips.
文摘Reconfigurable photonic integrated circuits(PICs)can implement arbitrary operations and signal processing functionalities directly in the optical domain.Run-time configuration of these circuits requires an electronic control layer to adjust the working point of their building elements and compensate for thermal drifts or degradations of the input signal.As the advancement of photonic foundries enables the fabrication of chips of increasing complexity,developing scalable electronic controllers becomes crucial for the operation of complex PICs.In this paper,we present an electronic application-specific integrated circuit(ASIC)designed for reconfiguration of PICs featuring numerous tunable elements.Each channel of the ASIC controller independently addresses one optical component of the PIC,and multiple parallel local feedback loops are operated to achieve full control.The proposed design is validated through real-time reconfiguration of a 16-channel silicon photonics adaptive universal beam coupler.Results demonstrate automatic coupling of an arbitrary input beam to a single-mode waveguide,dynamic compensation of beam wavefront distortions and successful transmission of a 50 Gbit/s signal through an optical free-space link.The low power consumption and compactness of the electronic chip provide a scalable paradigm that can be seamlessly extended to larger photonic architectures.
