http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Relative Diagnosability of Discrete-Event Systems and Its Opacity-Based Test Algorithm
Rui Zhao,Fuchun Liu,Zhusong Liu 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.4
The notion of relative diagnosability is proposed for logical automata and the concept of diagnosablerate is introduced to characterize the diagnosability property of a discrete-event system, which takes values in theinterval [0, 1]. The relationship between relative diagnosability and diagnosability introduced by Sampath et al. that relative diagnosability is weaker than diagnosability for discrete-event systems is analysed. Furthermore, anecessary and sufficient condition for relative diagnosability is presented. In particular, an opacity-based algorithmis developed to test the relative diagnosability, which is polynomial in the number of states of the system. Inaddition, the proposed algorithm may be used to deal with the problem of diagnosability.
Hongbo Li,Zengqi Sun,Badong Chen,Huaping Liu,Fuchun Sun 대한전기학회 2008 International Journal of Control, Automation, and Vol.6 No.6
Networked control systems (NCSs) have gained increasing attention in recent years due to their advantages and potential applications. The network Quality-of-Service (QoS) in NCSs always fluctuates due to changes of the traffic load and available network resources. To handle the network QoS variations problem, this paper presents an intelligent scheduling control method for NCSs, where the sampling period and the control parameters are simultaneously scheduled to compensate the effect of QoS variation on NCSs performance. For NCSs with network-induced delays and packet dropouts, a discrete-time switch model is proposed. By defining a sampling-period-dependent Lyapunov function and a common quadratic Lyapunov function, the stability conditions are derived for NCSs in terms of linear matrix inequalities (LMIs). Based on the obtained stability conditions, the corresponding controller design problem is solved and the performance optimization problem is also investigated. Simulation results are given to demonstrate the effectiveness of the proposed approaches.
The Novel Infrared Target Localization Algorithm for Free Floating Space Robot
Xiong Luo,Xiaolu Jie,Huaping Liu,Fuchun Sun 제어로봇시스템학회 2011 제어로봇시스템학회 국제학술대회 논문집 Vol.2011 No.10
With regards to the complicated characteristic of outer space, the infrared target recognition system has been investigated for free floating space robot. A novel algorithm is proposed based on visual location method for free floating space robot. Firstly, we set an omnidirectional camera with fixed lens on the ceiling. Here, the free floating robot is moving on the platform. Especially, in order to reduce image noise, we fix an infrared filter in the lens. Then, we place a number of infrared-emitting diodes on the free floating space robot and the targets. Finally, we can get the accurate positions and angle information of the robot and the target according to the location of the infrared light. The experimental results prove that this approach presented in this paper is an effective method for target detection and static target capture for free floating space robot.
Knockout of Myostatin by Zinc-finger Nuclease in Sheep Fibroblasts and Embryos
Zhang, Xuemei,Wang, Liqin,Wu, Yangsheng,Li, Wenrong,An, Jing,Zhang, Fuchun,Liu, Mingjun Asian Australasian Association of Animal Productio 2016 Animal Bioscience Vol.29 No.10
Myostatin (MSTN) can negatively regulate the growth and development of skeletal muscle, and natural mutations can cause "double-muscling" trait in animals. In order to block the inhibiting effect of MSTN on muscle growth, we transferred zinc-finger nucleases (ZFN) which targeted sheep MSTN gene into cultured fibroblasts. Gene targeted colonies were isolated from transfected fibroblasts by serial dilution culture and screened by sequencing. Two colonies were identified with mono-allele mutation and one colony with bi-allelic deletion. Further, we introduced the MSTN-ZFN mRNA into sheep embryos by microinjection. Thirteen of thirty-seven parthenogenetic embryos were targeted by ZFN, with the efficiency of 35%. Our work established the technical foundation for generation of MSTN gene editing sheep by somatic cloning and microinjection ZFN into embryos.