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| 1 | Delay Depending Decentralized Adaptive Attitude Synchronization Tracking Control of Spacecraft Formation显示文摘This paper deals with the problem of cooperative attitude tracking with time-varying communication delays as well as the delays between inter-synchronization control parts and self-tracking control parts in the spacecraft formation flying. First, we present the attitude synchronization tracking control algorithms and analyze the sufficient delay-dependent stability condition with the choice of a Lyapunov function when the angular velocity can be measured. More specifically, a class of linear filters is developed to derive an output feedback control law without having direct information of the angular velocity, which is significant for practical applications with low-cost configurations of spacecraft. Using a well-chosen Lyapunov-Krasovskii function, it is proven that the presented control law can make the spacecraft formation attitude tracking system synchronous and achieve exponential stability, in the face of model uncertainties, as well as non-uniform time-varying delays in communication links and different control parts. Finally, simulation results are presented to demonstrate the effectiveness of the proposed control schemes. | ZHOU Jiakang MA Guangfu HU Qinglei | 2012 | Chinese Journal of Aeronautics2012，25，3： | 8 |
| 2 | Pharmacokinetics of a new ivermectin/praziquantel oil suspension after intramuscular administration in pigs显示文摘 | Shusheng Tang Linlin chen Zhaoxu Guo Xiuzhi Hu Jiakang He Gang Wang Tingting Zhao Xilong Xiao | 2011 | 2011 (2-4)2011，，2： | 1 |
| 3 | 6 DOF Synchronized Control for Spacecraft Formation Fly- ing with Input Constraint and Parameter Uncertainties 显示文摘 | Lv Yueyong Hu Qinglei Ma Guangfu Zhou Jiakang | 2011 | ISA Transactions2011，50，5： | 1 |
| 4 | Design and Fabrication of a Multi-motion Mode Soft Crawling Robot显示文摘This article proposes a novel pneumatic soft actuator,which can perform bending in different directions under positive or negative air pressure.The actuators are composed of multiple airbags,and the design of the airbags is analyzed.A pneumatic soft robot based on these soft actuators is designed and fabricated by 3D printing technology.This robot consists of three soft multi-bladder actuators,one soft sensor,middle layer,bottom layer,front barb,front feet and rear feet.According to the different positive or negative pressure control of the three soft multi-bladder actuators,the robot can perform both linear,crossing and climbing movements.The soft robot has excellent environmental adaptability and can pass through complex environments by combining three modes of motion.Then,we establish the closed-loop automatic control system using soft sensor.The soft sensor can be stretched and compressed as the soft robot's movement.Finally,the automatic control system is verified by linear,crossing and climbing movement experiments.Results indicate that the robot can pass through complex environments under the closed-loop control system. | Youxu Chen Bingbing Hu Jiakang Zou Wei Zhang Deshan Wang Guoqing Jin | 2020 | Journal of Bionic Engineering2020，17，5： | 1 |
| 5 | Erratum to:Forecasts on CMB lensing observations with AliCPT-1显示文摘One of the authors regrets that there was an omission of affiliation in this published article[1].The affiliation information of author Yi-WenWu only included the institution name for the author,and it is advised to add the university as the author’s second affiliation,which is the 16th affiliation of this article. | Jinyi Liu Zeyang Sun Jiakang Han Julien Carron Jacques Delabrouille Siyu Li Yang Liu Jing Jin Shamik Ghosh Bin Yue Pengjie Zhang Chang Feng Zhi-Qi Huang Hao Liu Yi-Wen Wu Le Zhang Zi-Rui Zhang Wen Zhao Bin Hu Hong Li Xinmin Zhang | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，9： | 0 |
| 6 | Enhanced Removal of Phenols by MIZ-Cu Nanozyme Exhibiting Laccase-like Activity and Broader Adaptability to Temperature and pH Conditions显示文摘Phenolic compounds,classified as persistent organic pollutants,pose a significant threat to both human health and environmental safety.Therefore,the efficient removal of phenolic substances from water is of paramount importance.Laccase,a multicopper oxidase,is commonly utilized for the efficient removal of phenolic contaminants from water due to its highly effective catalytic activity towards phenolic compounds.However,natural laccase exhibits certain limitations that impede its practical implementation in industrial settings,including a restricted pH activity range,diminished enzymatic efficacy at elevated temperatures,and substantial cost implications.In this work,we prepared a nanozyme(MIZ-Cu,MIZ:2-methylimidazole)with laccase-like activity by coordinating 2-methylimidazole and copper.This nanozyme overcomes the deactivation issues observed in natural laccase under high temperature and alkaline conditions.The catalytic activity of the MIZ-Cu towards phenolic compounds surpasses that of natural laccase across a wide range of temperature and pH conditions.Under pH=9,80℃,and 500 mmol/L NaCl conditions,the removal rate of four phenols(catechol,hydroquinone,resorcinol,and phloroglucinol)by MIZ-Cu was much higher than that of natural laccase.The results also demonstrate exceptional removal rates in natural aquatic environments,thereby presenting a promising approach for the treatment of phenol-containing wastewater originating from industrial facilities. | WANG Yunlong SUN Yue WANG Le ZHANG Hao HU Jiakang LI Yongxin | 2023 | Chemical Research in Chinese Universities2023，39，6： | 0 |
| 7 | Forecasts on CMB lensing observations with AliCPT-1显示文摘Ali CPT-1 is the first Chinese cosmic microwave background(CMB) experiment aiming for the high-precision measurement of CMB B-mode polarization. The telescope, currently under deployment in Tibet, will observe in two frequency bands centered at 90 and 150 GHz. We forecast the CMB lensing reconstruction, lensing-galaxy, and lensing-cosmic infrared background(CIB) cross-correlation signal-to-noise ratio(SNR) for Ali CPT-1. We consider two stages with different integrated observation times, namely “4 module*yr”(first stage) and “48 module*yr”(final stage). For lensing reconstruction, we use three different quadratic estimators, namely temperature-only, polarization-only and minimum-variance(MV) estimators, using curved sky geometry. We take into account the impacts of inhomogeneous hit counts and mean-field bias due to incomplete sky coverage.In the first stage, our results show that the 150 GHz channel can measure the lensing signals at 15σ significance with the MV estimator. In the final stage, the measurement significance will increase to 31σ. We also combine the two frequency data in the harmonic domain to optimize the SNR. Our results show that the coadding procedure can significantly reduce the reconstruction bias in the high multiple range. Owning to the high quality of the polarization data in the final stage of Ali CPT-1, the EB estimator will dominate the lensing reconstruction in this stage. We also estimate the SNR of cross-correlations between Ali CPT-1 CMB lensing and other tracers of the large scale structure of the universe. For its cross-correlation with Dark Energy Spectroscopic Instrument(DESI) galaxies/quasars, we report the cross-correlation SNR = 10-20 for the four redshift bins at 0.05 < z < 2.1. In the first stage, the total SNR is approximately 32. In the final stage, the lensing-galaxy cross-correlation can reach SNR = 52. For lensing-CIB cross-correlation, in the first stage, the cross-correlations between Ali CPT-1 lensing and Planck CIB 353, 545 and857 GHz channels are approximately SNR = 18, 19, and 23, respectively. In the final stage, the cross-correlations can reach SNR = 25, 33 and 42. Due to the strong correlations between frequency bands, the total lensing-CIB cross-correlations by combining the three frequencies in Planck CIBs are SNR = 23 and 43 for the Ali CPT-1 first and final stages, respectively. | Jinyi Liu Zeyang Sun Jiakang Han Julien Carron Jacques Delabrouille Siyu Li Yang Liu Jing Jin Shamik Ghosh Bin Yue Pengjie Zhang Chang Feng Zhi-Qi Huang Hao Liu Yi-Wen Wu Le Zhang Zi-Rui Zhang Wen Zhao Bin Hu Hong Li Xinmin Zhang | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，10： | 0 |
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