Shanghai Institute of Work Safety Science

Shanghai, China

Shanghai Institute of Work Safety Science

Shanghai, China
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Zhang H.-Q.,Shanghai Institute of Work Safety Science | Zhang H.,Xi'an Jiaotong University
Dianji yu Kongzhi Xuebao/Electric Machines and Control | Year: 2010

Aiming to identification of magnitude and phase of the air gap flux of motor armature winding, a way was proposed to identify the magnitude and phase of air gap flux based on the current model. At the same time, in order to prevent from the effect that suspension control algorithm acts on phase of air gap flux, a predictive control achieved zero control delay of the air gap flux of motor armature winding. In this paper, the principles of the radial suspended force control, the way to identify the air gap flux based on the current model and the air gap flux phase prediction were introduced. Under no-load condition, the prototype was tested at 3000 r/min and between 1000 r/min and 3000 r/min. The experiment shows current model method satisfies to identify air gap flux of suspension system and the predictive control eliminates the deviation of phase of air gap flux caused by control delay.


Zhang S.-Z.,China University of Mining and Technology | Cheng W.-M.,Shandong University of Science and Technology | Li Q.-J.,Shanghai Institute of Work Safety Science | Zhang R.,Shandong University of Science and Technology | Luo C.-L.,China University of Mining and Technology
Journal of Coal Science and Engineering | Year: 2010

According to fluid dynamics analysis during the fire, the criteria k-ε two-equation model for solving three-dimensional turbulence was determined, the pollutants generated in the fire disaster were set by adopting Mixture multiphase flow, and the SIMPLE algorithm was used for solving on the basis of comprehensive consideration on the heat radiation and components transmission during fire. By simulating the airflow flowing state inside the tunnel during fire disaster of downward ventilation, drift ventilation, and ascensional ventilation, respectively, with regard to the actual situation of No.1, No.3, and No.5 belt roadway in Kongzhuang Coal Mine, the velocity vector distributions of pollutants under different inlet air volumes were obtained, and the damage degree and influential factors of disaster were also clear, which is helpful to control and avoid disaster during belt roadway fire. © 2010 The Editorial Office of Journal of Coal Science and Engineering (China) and Springer-Verlag Berlin Heidelberg.


Ren X.,Sichuan University | Zhao R.,Sichuan University | Li Q.,Shanghai Institute of Work Safety Science | Cheng X.,Southwest University of Science and Technology
Procedia Engineering | Year: 2014

Combines the geology features of Karst mine, the effect of Karst on stress wave propagation in rock, rock crushing and blasting crater formed were analyzed, Different forms of Hole-by-Hole detonation network was designed, Blasting network and blasting parameters were optimized, Hole-by-Hole detonation was tested in the field, Tests showed that hole-by-hole blasting technology is an advanced blasting technology to achieve detonating between two adjacent holes, In Karst mine hole-by-hole blasting technology enables make blasting vibration velocity decreased by 20%, Explosives consumption decreased by 11%, can effectively prevent misfire, greatly improving the level of safety in mines mining. © 2014 The Authors. Published by Elsevier Ltd.


Liu Y.,Shanghai Institute of Work Safety Science | Chen D.,Shanghai Institute of Work Safety Science | Ni K.,Shanghai Institute of Work Safety Science
Advanced Materials Research | Year: 2014

People are usually skeptical about the financial merit of safety investment due to inadequate demonstration of safety benefit. Many recent studies on safety economy fail to correlate safety outcome with specific safety investment and to consider its long-term effect. Also loss cost uncertainty is not properly addressed in current researches. In this report, we propose a financial analysis methodology for understanding the benefit of safety investment. Long-term financialanalysis models, including NPV, IRR, Tpp, Tdppare employed in the methodology. Loss cost is well presented through an innovative use of Poisson Distribution model. The proposed methodology is promising to reveal a clearer safety benefit, which constitutes part of a full appreciation of safety investment outcome and could serve as indispensable information for decision-making. © (2014) Trans Tech Publications, Switzerland.


Ni K.,Shanghai Institute of Work Safety Science
Applied Mechanics and Materials | Year: 2013

With the rapid development of communication technology, wireless internet technology and the increasing number of mobile phone users, people were more concern on the efficiency of real-time information service. Based on communication mechanism of multiple threads, a data delivery controller for mobile phone communication was presented in this paper. The server side controller designed on Java multiple threads and provided efficiency data response for request of android mobile phones. By our experiment, the average response time on the server was 3.8s on ten million times addition calculation, which can effectively meet the real-time requirements of mobile communication. © (2013) Trans Tech Publications, Switzerland.


Chen D.,Shanghai Institute of Work Safety Science | Yang L.,Shanghai Institute of Work Safety Science | Ni K.,Shanghai Institute of Work Safety Science
Advanced Materials Research | Year: 2014

Based on the root cause analysis and statistics of typical Ammonia leakage accidents which happened during 1980 to 2010, it is pointed out the main measures to prevent it. This Paper conducted a systematic analysis of the five main factors for Ammonia leakage. Finally, this paper described atmosphere and the earth's surface exert influence on Ammonia diffusion. © (2014) Trans Tech Publications, Switzerland.


Li Q.-J.,Shanghai Institute of Work Safety Science | Xia X.,Shanghai Institute of Work Safety Science | Li Z.-X.,Shanghai Institute of Work Safety Science | Ni K.,Shanghai Institute of Work Safety Science
Dongbei Daxue Xuebao/Journal of Northeastern University | Year: 2011

The concept of accident scenarios analysis was used in the frame of accident risk assessment methodology for chemical process industries, it consists of two parts, i.e., methodology for the identification of major accident hazards and the methodology for the identification of reference accident scenarios. The identification of possible accident scenarios is a key-point in risk assessment. A new methodological framework was presented to identify accident scenarios by using hierarchical holography modeling. This method was applied to the process of liquefied ammonia storage. The results showed that it can identify accident scenarios well, reduce the cost of analysis, and prevent undue emphasis on unimportant accident scenarios.

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