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Carbon fiber-reinforced carbon composite (CFC)/Ti6Al4V alloy brazing has been performed with Ag–Cu–Ti braze and Nb (or W) foil. Satisfactory bonding is achieved at the interfaces among substrates, refractory metal layer and fillers. The joining region consists of filler I, refractory metal layer and filler II. The fillers I and II are composed of Ag-based solid solution, TiCu and Cu-based solid solution...
A quarter-rate 51Gb/s PAM4 CDR with decoded dual-NRZ outputs is presented for 400GbE optical transceivers. A baud-rate data-only sampling PD with zero-crossing integrating front-end is proposed to minimize the clock generation and distribution overhead, as well as improving the noise resilience under PAM4 low-SNR inputs. Measurement results show the CDR features 1.08ps RMS clock jitter, 3.4×10−9 PAM4...
Time-varying formation control problems for high-order multi-agent systems with directed communication topology are investigated. A general protocol based on output feedback is proposed. By means of variable transformation, the time-varying formation control problems can be transferred into consensus problems and then stabilization problems. Sufficient conditions are obtained based on Lyapunov stability...
With the development and progress of intelligent control technology, communication technology and unmanned aerial vehicle (UAV) technology, performing the tasks depending on UAV which is loaded with various sensors has come true. The tradition centralized information interactive strategy has many disadvantages such as large amount of computation, long time of computation, poor anti-inference ability,...
While localizing and navigating quad-rotor, making use of the data collected by laser range-finder in the process of localization and navigation incrementally build a global map, and then achieve localization and navigation for the quad-rotor again by the global map established. Based on semi-structured indoor environment characteristics, this paper builds feature map of indoor environment by feature...
Nonlinear filters have been developed for decades and a variety of methods have been utilized to improve the performance of these nonlinear filters. A class of nonlinear filters based on deterministic sampling method received widespread concern recently which can be used instead of EKFs. In the deterministic sampling filters, it needs matrix decomposition to get the square root of covariance matrix...
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