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This paper propose an asynchronous impulsive control scheme for consensus of second-order multi-agent systems. The proposed control scheme do not require time synchronization among agents. Each agents has its won clock to determine the impulsive instants. By using discretization approaches and the stochastic matrix theory, it is find that the stability of the proposed control scheme depends on the...
In order to detect pipelines underground to avoid accidents in urban construction, ground penetrating radar (GPR) is applied for non-destructive evaluation. Surface integral equations are used to model the scattering properties of the underground pipes and method of moment (MoM) is used to solve the equations. Since both multi-level fast multi-pole algorithm (MLFMA) and adaptive cross approximation...
In this study, we perform a top gate field effect transistor by using the integration of novel materials such as graphene as active channel and fluorinated graphene as dielectrics on flexible Polyethylene terephthalate (PET) substrate. These device shows high carrier mobility (∼969 cm2/v.s) at a drain bias of +0.5V. It shows good mechanical flexibility and electrical stability after bending measurement...
Segmentation technique for optimizing the holding voltage of SCR is discussed and implemented in a 0.6μm SOI process. Based on the prior researches, the holding voltage of SCR is a key parameter for latch-up risk assessment. The segmented SCR with external resistor paralleled with the parasitic Ptub resistor is proposed by modifying the layout, and the holding voltage can be increased. The TLP characterization...
A failure analysis of a product due to the on chip ESD structure defects is presented in this paper. ESD is one of the most important reliability issues in the design of integrated circuits. About 40% of the failure of integrated circuits is related to ESD/EOS stress. In order to improve the reliability of ICs, the design of ESD protection is increasingly necessary for the modern semiconductor industry...
In this paper, the containment control problem in second-order multi-agent systems for static and dynamic leaders under directed and undirected topologies are studied. We propose the periodic intermittent containment control algorithm, which both reduces the load of updating rates of controller and cuts down the working time of the controller in each sampling interval. Some necessary and sufficient...
In order to solve the problem of harsh operating condition of the space manipulator, and the problem of not being able to afford great collision Momentum, this paper proposes a new technical method, namely soft-contact technology. According to the proposed method, the dynamic model of space flexible manipulator is built up based on Kane's equations. Then this paper makes a comparison simulation between...
Nowadays a great amount of space debris threat the safety of space activities, so the space debris removal becomes a hot research field. In particular, on the base of space mechanical arm technology, using mechanical arm to remove space debris proves feasible in the implementation. Traditional space mechanical arms are rigid arms, and in consideration of the uncontrolled momentum of rigid arm, this...
We present electrostatic flapping actuators with self-sustained oscillations powered by on-board capacitors for the untethered flight control of a palm-sized tiny balloon. With a length of 13 mm and weight of only 3 mg, the actuator can generate lift force of 1mg with a stroke frequency of 50Hz under applied DC voltages. The actuator produces a wing rotation angles up to ±45° for the lateral propelling...
Wing morphology and stiffness are crucial in lift force generation during flapping flight. In this investigation, we present both fabrication and characterization methodologies for artificial insect wings with biomimetic morphology and stiffness using laser cutting and bonding of multilayer materials. Two distinctive achievements have been accomplished: (1) simple and versatile fabrication for the...
We present an artificial flapping-wing insect driven by a low voltage electromagnetic actuator to move laterally along a horizontal guide rail for the first time. Three distinctive achievements have been accomplished: (1) only 90mg in weight with wing span of 3 cm for the prototype; (2) high peak to peak flapping amplitude of 100.4° at 51.3Hz under a low driving voltage of 5V; and (3) measured 116...
We report an insect-size crawling robot with fast moving speed driven by electrostatically induced self-vibration for the first time. Under an applied DC voltage, the robot with a total mass of 47mg has achieved a forward crawling speed up to 30mm/s (1.5 body lengths per second). Using an integrated on-board capacitor, it can move freely without electrical powering wires for up to 10 seconds with...
Because there are too many types of errors occurred in a multi-software integrated platform, such as Integrated Decision Information System (IDIS). It is urgent to design an error searching system to solve all different problems. However, those errors belong to different stages like setup, configuration, and operation, or those errors may occurred in different services, applications, or IP ports,...
Considerable studies have been made on iridium complexes during the past 10 years, due to their high quantum efficiency, color tenability, and potential applications in various areas. In this chapter, we review the synthesis, structure, and photophysical properties of luminescent Ir complexes, as well as their applications in organic light-emitting diodes (OLEDs), biological labeling, sensitizers...
Wireless power transfer (WPT) offers the promise of cutting the last cord, making users to recharge portable electronic devices easily through the air. In this paper, a high efficient wireless power transfer via strongly magnetically-coupled resonant is designed. It can be divided into two parts components, transmitter composed by four pairs of inductive coils that are connected to be a cube-shaped...
Layered medium doubly periodic structures (LMDPS) have various applications like frequency selective surfaces (FSS), photonic crystal slabs, metamaterials, and reflectarray antennas. They have drawn huge interests among researchers in computational electromagnetics (CEM), but are still posing great challenges due to the complexity of the structure. The method of moments (MoM) as an integral equation...
The underground pipes play an important role for our modern city. In order to avoid the accidents from underground pipes, it is necessary and meaningful to research on non-destructive evaluation technique based on ground penetrating radar (GPR). Simulation of electromagnetic scattering from underground targets is achieved by surface integral equations and method of moment (MoM) in this paper. A fast...
In recent years, in applications related to the remote sensing of the environment, the research on characterization of the electromagnetic wave interaction with complex rainfall particles is of great importance. Several analytical methods based on wave theory, such as quasi-crystalline approximation, are frequently used. However, these approaches are not able to capture the essential physics of many...
In this paper, a two element ultra-wideband (UWB) multiple input multiple output (MIMO) antenna with local area network (WLAN) rejection is presented. A T-shaped slot is etched on the ground to improve the impedance matching characteristic in the low-frequency and reduce the mutual coupling. A line slot is introduced in the ground plane to further enhance isolation. The UWB MIMO band notched antenna...
A novel gate-coupled silicon-controlled rectifier (GCSCR) device is proposed and realized in a 0.35-um BiCMOS process for electrostatic-discharge (ESD) applications. Without using an external trigger circuitry, the GCSCR has a trigger voltage as low as 9 V to effectively protect deep-submicrometer MOS circuits. The ESD robustness of the novel SCR in positive operations are higher than 60mA/um, thus...
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