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In this paper, we propose a method to develop optimization for an integrated measurement system of camera and laser sensors based on tensor interpretation. A new metric called vision distance is applied which involves computing Frobenius and Euclidean norms to effectively measure the degree of alignment between two visual entities in 3D space. Using this metric, a performance function is proposed...
As the important part of the transformer insulating, the insulation performance of oil-paper directly affects the security and stable operation of the transformer. In order to study the influence of temperature and thermal aging on the breakdown voltage of oil-paper insulation, breakdown voltage test of transformer's oil-paper was carried out, and breakdown voltages of oil-paper insulation were obtained...
This paper presents a framework for operational risk assessment of wind turbines (WTs). In the framework, a model for operational risk assessment of WT converters is established while considering the converter topological structures and the risk assessment of power modules, including insulated gate bipolar translator (IGBTs), diodes, and DC link capacitors. The WT anomaly detection is based on supervisory...
The motivation of the present paper lies in the lifetime assessment of DC link electrolytic capacitor of wind power converter considering operational condition. The electrothermal coupling finite element model (FEM) is developed in view of the actual operating condition of DC link electrolytic capacitor to obtain the thermal resistance of electrolytic capacitor at steady state. The power loss of capacitor...
The studies used a test foundation trench to carry site measurement of siltation of Hongkong-Zhuhai-Macau Bridge. A test foundation trench which was 100-meter-long and 21-meter-wide was excavated near the west artificial island. The medial axis of trench was consistent with the designed axis of immersed tunnel. The data of 12-month site measurements indicates siltation happened on trench bottom and...
The DS-CDMA system has a serious problem that is the multiple-access interference (MAI). Usually, people use the Multi-User detection (MUD) to cancel the MAI. The Multi-User detection makes the best use of the information of other users to cancel the MAI. Indeedly, MUD can cancel the MAI completely, but it has very large computational burden and it increase the noise of the system, besides, it needs...
In this paper, we developed a novel cooperative communication scheme-distributed opportunistic incremental decode and forward (DOIDF) that employs the incremental relaying (IR) strategy into opportunistic relaying (OR) scheme. By exploiting limited feedback from the destination, the proposed scheme starts the OR program only when outage occurs in direct transmission. The outage probability of DOIDF...
Multiple access interference (MAI) is one of the main factors that deteriorate the performance of CDMA systems. The anti-MAI performance of auxiliary vector receivers is studied in this paper. Simulation results indicate that the weight coefficient of an auxiliary vector (AV) diminishes sharply as the AVpsilas sequence number increases, thus the systempsilas performance gain brought by the increase...
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