monitoring the vibration signals of rotating machinery, ulteriorly, assessing the safety of equipment plays a significant role in ensuring the security of equipment and in saving maintenance fee. This paper integrated...
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monitoring the vibration signals of rotating machinery, ulteriorly, assessing the safety of equipment plays a significant role in ensuring the security of equipment and in saving maintenance fee. This paper integrated the idea of "configuration" in the industry control software, developed the "flexible" network-based online monitoring and fault diagnosis system. The network topology, configuration module, database, data acquisition workstation and monitoring components were presented. With the smart data acquisition strategy and strong adaptive monitoring tools, the system can be applied on kinds of rotating machinery, and the practical application of the system was introduced.
Text based image search tools such as Google and Baidu will cause lots of junk image, because only text near the image was searched. We construct a content based junk image filter system to resolve this problem. We us...
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Text based image search tools such as Google and Baidu will cause lots of junk image, because only text near the image was searched. We construct a content based junk image filter system to resolve this problem. We use kernel based KNN to clustered the image searched by the Google into multiple classes by its vision feature, then use hyperbolic technique to display the image sampled from the clustered image, when user selected the image wanted, save the images which class equal to the image selected and filter out others.
A distributedcontrol system for humanoid robot BHBIP is proposed, which combines three layers including main control layer, communication layer and actuating layer. The main control layer is core of control system, d...
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A distributedcontrol system for humanoid robot BHBIP is proposed, which combines three layers including main control layer, communication layer and actuating layer. The main control layer is core of control system, dealing with gait generation, decision making and human-robot interface. The communication layer serves as a bridge between main control layer and actuating layer. Meanwhile, the actuating layer is responsible for servo control of joint motor and sensor information collection. Though walking experiment, the effectiveness of proposed distributedcontrol system is confirmed that BHBIP maintained the stable locomotion on outdoor environment.
A combined "acceleration feed forward plus PID" control method is introduced to control the linear motor guided by air-bearing. The key technique of feed forward control system-obtaining the exact feed forwa...
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A combined "acceleration feed forward plus PID" control method is introduced to control the linear motor guided by air-bearing. The key technique of feed forward control system-obtaining the exact feed forward coefficient is proposed, with which high positioning accuracy and high moving speed are achieved. The feed forward control method is described in detail. The experimental results are provided in the end.
This paper firstly introduced the characteristic of viscoelasticity damping material and two kinds of damping structure, Secondly it studied the result of vibration control by cantilever beam which is pasted with the ...
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This paper firstly introduced the characteristic of viscoelasticity damping material and two kinds of damping structure, Secondly it studied the result of vibration control by cantilever beam which is pasted with the viscoelasticity damping material, The result certified that after pasted with the viscoelasticity damping material, The effect of vibration control is remarkable, At last it emulated the cantilever beam pasted with the viscoelasticity damping material of different thickness, The result certified that the thickness of viscoelasticity damping material also had remarkable effect on vibration control.
A series of novel RuO 2 /Ti electrodes were prepared by doping Pd, Co, Si elements into surface layer and introducing Sn-Sb coating as intermediate layer. Compared with RuO 2 /Ti electrode, these modified electrodes s...
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A series of novel RuO 2 /Ti electrodes were prepared by doping Pd, Co, Si elements into surface layer and introducing Sn-Sb coating as intermediate layer. Compared with RuO 2 /Ti electrode, these modified electrodes showed better electro-chemical properties and longer service-life. The doped elements had different effects on the electro-catalytic properties and service-life. The different modified electrodes was used in Nitrobenzene (NB) wastewater treatment, the results showed that the modified electrodes, especially the electrodes with intermediate layers could effectively remove the organic pollutants in wastewater.
Lateral moving-electrode type electric field (LMEF) was a new upgrading technique for electrostatic precipitator (ESP) and obtained excellent effect in application for its advanced mechanism, feasibility and economic....
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Lateral moving-electrode type electric field (LMEF) was a new upgrading technique for electrostatic precipitator (ESP) and obtained excellent effect in application for its advanced mechanism, feasibility and economic. Modeling on the ESP of Hebei Iron &Steel Group, this paper has numerically simulated the effect of LMEF on resistance and airflow distribution of the ESP. The results indicated that LMEF has almost no influence upon resistance increasing but market effect on airflow distribution.
Dianchi Lake is one of the three most seriously eutrophic lakes in China. In the present study, the nitrogen fractions and vertical profiles of various nitrogen forms in 11 sediment cores sampled in the Dianchi Lake w...
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Dianchi Lake is one of the three most seriously eutrophic lakes in China. In the present study, the nitrogen fractions and vertical profiles of various nitrogen forms in 11 sediment cores sampled in the Dianchi Lake were investigated. The results showed that the total nitrogen content ranged from 1596.60 to 3238.68 mg/kg, and the contribution to total nitrogen of transferrable nitrogen and fixed nitrogen is close. The vertical profiles of total nitrogen were coincidence in the pollution history of Dianchi Lake.
Presently, public traffic system mainly depends on driver's manual operation, which will inevitably encounter many problems such as punctuality of the bus's arrival on bus station. Paper proposes an supervisor...
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Presently, public traffic system mainly depends on driver's manual operation, which will inevitably encounter many problems such as punctuality of the bus's arrival on bus station. Paper proposes an supervisory system based on GPRS and ZigBee technology, to improve the operation efficiency of bus monitoring system and realize intelligent transportation system. Paper introduces the bus monitoring system from the aspect of both hardware design and software design. System takes it into accounts for the respective advantages and disadvantages of GPRS and ZigBee, and designs a feasible solution successfully, of practically significant.
Cloud storage service brings about not only low cost and scalability, but also great challenges in the field of data security and privacy protection. Security has been regarded as one of the greatest problems in the f...
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Cloud storage service brings about not only low cost and scalability, but also great challenges in the field of data security and privacy protection. Security has been regarded as one of the greatest problems in the field of cloud storage service. Aiming at the present problem, a trusted control model of cloud storage (TCMCS) is presented. With the using of cipher-text access control and integrity verification, TCMCS makes the users' data safe. Considering the security and efficiency in data sharing, we introduced the trusted third party (TTP). Theoretic analysis and simulation show that data security can be preserved while retaining prefect performance in data processing.
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