Zhi Li

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In a typical mobile ad hoc network, mobile computing devices wander autonomously and communicate via temporary links in a self-organized computing system without any central administrator or infrastructure support. To support truly ad hoc impromptu communication among such uncoordinated devices, a data multipath routing algorithm can be used because there(More)
Efficient routing has always been a matter of concern for mobile ad-hoc networks (MANETs). While reactive protocols are competing with the performance of proactive protocols, hybrid protocols have attempted to brew the best of the both. This paper reviews some of the selected literature regarding MANET routing protocols and studies the comparative(More)
Brushless DC motor has large torque ripple for the design and characteristic of the control strategies. The torque ripple can be divided into commutation torque ripple and non-commutation torque ripple. This paper analyses why the non-commutation torque ripple produced in detail, points out the brushless DC motor can cause the diode freewheeling of inactive(More)
When induction heating power supply working at high-frequency state, phase tracking is a difficulty. The paper presents a phase tracking method based on TMS320F2812 of induction heating power supply. The method uses the signal processing circuit to process the phase of voltage and current signals, and send the phase signals to capture units of TMS320F2812,(More)
A piezoelectric/magnetostrictive composite vibrating energy generator is introduced, and its output characteristic is analyzed. In order to increase the maximum output power of the vibrating energy harvester, a new up-conversion matching circuit is proposed, which can change the low frequency vibrating signal into a narrow bandwidth signal focused on a(More)
TCP (transmission control protocol) will for sure continue to be the major transport protocol in wireless environments, due to its large install-base in existing applications. Indeed, in future ad hoc wireless networks where devices communicate among each other over multihop routes, TCP is expected to be the prominent protocol for data exchange (e.g.,(More)
The TCP (Transmission Control Protocol) is a critical component in an ad hoc wireless network because of its pervasive usage in various important applications. However, TCP's congestion control mechanism is notoriously ineffective in dealing with time-varying channel errors even for a single wireless link. Indeed, the adverse effects of the inefficient(More)
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