With the continuous development of embedded system-on-chip, it has become a trend to add MicroBlaze soft core to Field Programmable Gate Array (FPGA) to complete the design and development of system communication and ...
详细信息
Considering smart device and robot having entered the home environment to provide human with convenient services, this paper proposes a multimodal service system to enhance the system dynamic understanding of the envi...
详细信息
In the last decades, the development of compliant mechanisms has been constantly increasing and these systems have found applications in numerous engineering fields. In line with this growth, many efforts have been ma...
详细信息
ISBN:
(纸本)9780791887363
In the last decades, the development of compliant mechanisms has been constantly increasing and these systems have found applications in numerous engineering fields. In line with this growth, many efforts have been made to define analytical procedures and design strategies for modeling their deflections. In this investigation, the theory of the ellipse of elasticity is applied to the linear kinetostatic analysis of a compliant mechanism. The proposed method takes advantage of the properties of antiprojective polarity transformations with respect to the conic associated to the flexible system. The main advantage of the approach lies on the fact that the deflection analysis problem is reduced to a geometric problem with straightforward solution. The compliant mechanism under study is designed considering flexures with different geometric features, such as initial or variable curvature, and non-uniform cross-section. From a kinematic point of view, the mechanism is obtained from a hybrid chain composed of two closed chains and of one open chain. The ellipse of elasticity associated to the compliant system is determined as a composition of sub-chains in series and parallel arrangements. The kinetostatic analysis of the compliant mechanism is therefore performed by exploiting the antiprojective properties related to the ellipse, leading to the definition of the field of displacements of the end-effector.
In order to solve the problem of low photoelectric conversion efficiency in solar power generation, a solar photovoltaic power tracking system based on PLC is proposed. This system can make directional adjustments whe...
详细信息
China's digital transformation has accelerated in recent years, but it has also been accompanied by a sharp rise in smart industrial cybersecurity risks. Smart industrial manufacturing has become a popular area fo...
详细信息
In recent years, the rapid development of big data technology has facilitated the innovation of methods for the collection, analysis and application of large-scale data. The combination of trajectory data analysis and...
详细信息
This paper proposed a space-time cooperative guidance method to address the insufficient intelligent guidance of existing missile systems when facing complex threats. Firstly, a double-layer terminal guidance law stru...
详细信息
This paper proposed a space-time cooperative guidance method to address the insufficient intelligent guidance of existing missile systems when facing complex threats. Firstly, a double-layer terminal guidance law structure satisfying space-time cooperative constraints is constructed to comprehensively consider the dynamic game relationship. Subsequently, in the LOS direction, a cooperative guidance law is designed based on the finite time multi-agent consensus protocol. In the LOSN direction, the normed differential game theory is introduced to solve the bilateral optimal strategy for dynamic game between missiles and target, obtaining a terminal guidance law with zero control LOS angular velocity symbol value. This enhances the effectiveness and stability of cooperative guidance, effectively addressing complex guidance scenarios. Finally, simulation experiments are set to validate the proposed method. This research provides a new solution for intelligent guidance of multi-missile systems, which has important theoretical reference and engineeringapplication value.
This paper introduces XMeta-OS, a meta-operating system specially designed with Linux as its foundation to unify and optimize resource management for the distributed edge-cloud when dynamic use of GPU resources is pos...
详细信息
One of the key aims of Industry 4.0 is to create more responsive systems. Responsiveness and adaptation enable coping with new market requirements or introducing new products, as demonstrated by the challenges posed b...
详细信息
ISBN:
(纸本)9781665493130
One of the key aims of Industry 4.0 is to create more responsive systems. Responsiveness and adaptation enable coping with new market requirements or introducing new products, as demonstrated by the challenges posed by COVID-19. Despite the economic and sustainability benefits, practitioners often only consider adapting their systems for limited cases. They rely on simple, intuitive estimates of adaptation metrics and do not optimize these milestone decisions, leading to missed opportunities. Currently, there are no reliable methods for measuring system adaptability, quantifying the effort required to adapt it from one state to another, or optimizing the adaptation decision. This paper proposes a comprehensive adaptation framework based on complexity index quantification, graph network estimation, and multi-objective optimization. The framework outlines three approaches for estimating efforts in adapting the physical systemdesign, upgrading control software, and optimizing the adaptation decision. The application on a lab-sized cell demonstrates the framework's ability to estimate the adaption processes metric and generate a set of optimized cell states. The application reveals potentials for improvement and extension of the three approaches.
Seismic isolation techniques are hardly implementable on existing historic structures, if their integrity is a matter of concern (Viggiani in 19th internationalconference on soil mechanics and geotechnical engineerin...
详细信息
Seismic isolation techniques are hardly implementable on existing historic structures, if their integrity is a matter of concern (Viggiani in 19th internationalconference on soil mechanics and geotechnical engineering, Seoul Korea, 2017; Flora in Third international symposium on geotechnical engineering for the preservation of monuments and historic sites, Naples, Italy, 2022). Recent results have shown that if a continuous barrier having a low dynamic impedance is created in the soil beneath the structure, both the absolute acceleration and relative displacement demands are significantly reduced without any direct intervention on the structure itself. Super Absorbent Polymers (SAP), mixed with the in-situ soil, are excellent candidates to the creation of these soft barriers. The first part of the paper reports a complete dynamic laboratory characterization of SAP-sand mixtures with different percentages of polymer in the soil. The results clearly show that small percentages of SAP have a minor effect on the reduction of the shear stiffness value, while when the percentage is higher than 40% a sharp drop is observed. It is also shown that SAP largely increases the damping ratio of the treated layer, being this an extremely beneficial effect for its seismically isolating application. In the second part of the paper, one and two-dimensional seismic response analyses were carried out to explore the beneficial effects of SAP-soil filtering barriers as parts of a Geotechnical Seismic Isolation (GSI) system. The paper also proposes a simplified analytical approach to design geotechnical seismic isolation using Super Absorbent Polymers.
暂无评论