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8. View-Based 3-D CAD Model Retrieval With Deep Residual Networks.

Author

Zhang, Chao, Zhou, Guanghui, Yang, Haidong, Xiao, Zhongdong, and Yang, Xiongjun

Abstract

In industrial enterprises, effective retrieval and reuse of three-dimensional (3-D) computer-aided design (CAD) models could greatly save time and cost in new product development and manufacturing. Consequently, this article proposes a novel view-based approach for 3-D CAD model retrieval enabled by deep learning. This article constructs a multiview model dataset in industrial domain that collects solid and line views of database models. Since views contain rich information for differentiating these models, the problem of model retrieval is defined as a view recognition problem. Then, the extended deep residual networks (ResNets) are successfully trained to facilitate the model retrieval. With the learned networks, engineers could take a group of views, an engineering drawing, or even a hand-drawn sketch that represents their query intents as input and acquire the relevant 3-D CAD models and embedded knowledge for product lifecycle reuse. The experimental results demonstrate the effectiveness and efficiency of the approach. [ABSTRACT FROM AUTHOR]

Published
2020
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12. The Smith model-based management for mutual symbiosis enterprises in an Eco-industrial system

Author

Zhou Guanghui and Xiao Zhong-dong

Subjects
Engineering, Operations research, business.industry, media_common.quotation_subject, General relationship, Set (abstract data type), Mechanism (philosophy), Model based management, Industrial systems, Production (economics), business, Industrial relations, Function (engineering), media_common
Abstract

In this research, we propose a general relationship model for Eco-enterprises in an EIP based on the Smith model. The proposed relationship model has one objective — set the desired production capacity for any symbiotic enterprise to establish a self-control mechanism. A Liyapunuofu function approach is introduced into the specific relationship model based on mutualism. A fourth-order Runge Kutta algorithm is introduced into mining data so that the relationship model can be applied to establish an orderly and harmonious environment with self-control mechanism.

Published
2012

13. The Characteristic Analysis of the Heat Storage System of the Solar-air Source Compound Heat Pump

Author

Zhang Chao, Dong Jiayun, Miao Jiajiang, and Zhou Guanghui

Subjects
Meteorology, business.industry, Nuclear engineering, Vacuum tube, Hybrid heat, Thermal energy storage, Solar energy, Storage water heater, law.invention, law, Storage tank, Physics::Space Physics, Environmental science, Astrophysics::Earth and Planetary Astrophysics, Thermosiphon, business, Heat pump
Abstract

A mathematical model of the all-glass vacuum tube solar collector-heat storage tank system of a new solar-air source compound heat pump has been developed, and the heat storage characteristics of the system have been simulated in Zhengzhou City at winter solstice. The changing regularity of the solar radiation intensity in one day, and the influence of the heat storage medium flow on the temperature variation of the heat storage tank and the heat-collecting efficiency of the solar collector have been analyzed. The simulation results reveals the dynamic heat-collecting features of the solar collector-heat storage tank system, and forms a solid basis for the combined operation of the solar collector-heat storage tank system and the heat pump system.

Published
2011

14. The Domestic Research Status of the Solar-Air Dual-Source Heat Pump

Author

Zhang Chao, Zhao Xiaodan, Liu Yin, and Zhou Guanghui

Subjects
Heat pump and refrigeration cycle, Nuclear engineering, Hybrid heat, Physics::Optics, Thermodynamics, Coefficient of performance, law.invention, law, Waste heat, Heat recovery ventilation, Air source heat pumps, Environmental science, Thermosiphon, Physics::Atmospheric and Oceanic Physics, Heat pump
Abstract

The solar-air dual-source heat pump technology is based on the application of solar energy and air energy as the heat source of the heat pump system. It is a comprehensive utilization of the solar energy and the air energy, and it can be a good solution to the low efficiency, the non-stability and the poor reliability of the air-source heat pump in winter. In the paper, the development of different types solar-air dual-source heat pump system in China have been discussed, and the characteristics of the different heat pump systems have been analyzed. Based on the analysis results, a new solar-air dual-source compound heat pump system has been constructed.

Published
2010

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