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In this paper, the adaptive robust control (ARC) algorithm is proposed for tracking control of the electric cylinder position. According to the analysis of the working principle of the electric cylinder servo system, the model of the system is established on the modified Lugre friction model, and single observer is designed for calculating friction as well. Then the ARC controller and adaptive law...
This paper proposes an adaptive vehicular MAC protocol, called A-VeMAC, for VANETs. A-VeMAC is a multichannel MAC protocol based on VeMAC. Like VeMAC, it employs a TDMA mechanism, and supports one control channel and several service channels. For the control channel, each frame is partitioned into two disjoint sets of timeslots, which are associated with vehicles moving in opposite directions, respectively...
This paper proposes an adaptive channel access (ACA) mechanism for LTE-U and WiFi coexistence in an unlicensed spectrum. To support the ACA mechanism, we introduce a new time-frequency structure, and a modified listen before talk (MLBT) functionality for channel contention of LTE-U users. Moreover, we also introduce a dynamic channel switch (DCS) sub-mechanism and an adaptive almost blank subframe...
This paper proposes an adaptive time division scheduling (ATDS) based resource allocation algorithm for device-to-device (D2D) communication underlaying cellular networks. The proposed ATDS algorithm introduces an adaptive TDS strategy, in which all D2D pairs in a cellular system are adaptively scheduled into a series of timeslots for communication based on an improved proportional fairness algorithm...
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