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In this paper, we investigate the secrecy performance of a cognitive untrusted relay network with a direct link using selection combining (SC) scheme, where a secondary source communicates with a secondary destination through an untrusted relay. We first examine the connection outage probability (COP) and secrecy outage probability (SOP) to investigate the reliability and security performance of the...
We investigate the physical layer security in non-regenerative untrusted relay networks, where the relay is a potential eavesdropper despite its cooperatively relaying the information. The current research and development of untrusted relay is often based on the assumption of perfect channel knowledge or the capability of variable-rate transmissions which is decided by instantaneous channel state...
In order to solve the problem with fluctuation of heat-sealing temperature caused by periodical motion of sealing block for bag making machine, this paper has proposed an intelligent control solution that combines static feed-forward with soft variable structure and soft saturation. The dynamic performance of sealing block temperature control system characterized by a long time delay has been improved...
Magnetic powder brake is often taken as a functional element in strip unwinding tension control system. In view of the wide range variations of web radius and line transport velocity in strip unwinding process, as a rule, the strip tension control system is terribly disturbed by the abovementioned variations during unwinding process. To make the tension control system more robust, this paper has proposed...
Focused on the normal architecture of buck DC switching-mode power supply, this paper presents the system modeling, the model parameter differences as a result of dynamic load changes and the reason of the poor stability on light load condition are analyzed. To improve the dynamic performance on the robustness for the system model parameter uncertainty and the system stability of light load condition,...
Security monitoring systems are popular in home automation, and Zigbee is a new industrial standard wireless sensor networks. This paper introduces an experimental home security monitoring and alarming system based on Zigbee technology, it is capable of monitoring door & window magnetic contact, smoke, gas leak, water flooding, providing simple controls such as turning off the valves, and sending...
Based on the control principle of the dry plastic film laminating machine, and the linear velocity synchronization and variable tension control in the winding process for the two-layer film laminating machinery, this paper presents the system modeling and a new winding drive system using an AC torque motor. Due to the wide range variation of the web radius, the set point of the film tension needs...
Based on the automatic color register control for plastic film and aluminum foil in the flexible packaging and printing industry, this paper analyzes the commonly employed system solution of one main motor driving several printing roller stations. To meet the new demands of faster control response, better performance of correcting registration errors and tension smoothing, this paper proposes a new...
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