Recently, a new finite-sample system identification algorithm, called Sign-Perturbed Sums (SPS), was introduced in [2]. SPS constructs finite-sample confidence regions that are centered around the least squares estima...
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ISBN:
(纸本)9781467357159
Recently, a new finite-sample system identification algorithm, called Sign-Perturbed Sums (SPS), was introduced in [2]. SPS constructs finite-sample confidence regions that are centered around the least squares estimate, and are guaranteed to contain the true system parameters with a user-chosen exact probability for any finite number of data points. The main assumption of SPS is that the noise terms are independent and symmetrically distributed about zero, but they do not have to be stationary, nor do their variances and distributions have to be known. Although it is easy to determine if a particular parameter belongs to the confidence region, it is not easy to describe the boundary of the region, and hence to compactly represent the exact confidence region. In this paper we show that an ellipsoidal outer-approximation of the SPS confidence region can be found by solving a convex optimization problem, and we illustrate the properties of the SPS region and the ellipsoidal outer-approximation in simulation examples.
We study in this paper the consensus problem for multi-agent systems with agents characterized by high-order linear systems with time delays in both the communication network and inputs. Provided that the open-loop dy...
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ISBN:
(纸本)9781479901777
We study in this paper the consensus problem for multi-agent systems with agents characterized by high-order linear systems with time delays in both the communication network and inputs. Provided that the open-loop dynamics of the agents is not exponentially unstable, but may be polynomially unstable, and the communication topology contains a directed spanning tree, a truncated predictor feedback approach is established to solve the consensus problem. It is shown that, if the delays are constant and exactly known, the consensus problem can be solved by state feedback protocols for arbitrarily large bounded delays. If it is further assumed that the open-loop dynamics of the agents only contains zero eigenvalues, the delays are allowed to be time-varying and unknown. Numerical examples are worked out to illustrate the effectiveness of the proposed approaches.
The paper surveys the ideas of cooperation between parametric and nonparametric (kernel-based) algorithms of nonlinear block-oriented system identification. Various strategies are proposed, dependently on the system s...
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This paper addresses the motion planning problem of the trident snake robot consisting of a triangular body equipped with 2-link branches with actuated joints. The kinematics of the robot are represented by a driftles...
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We consider a controllable linear time invariant model in state space of dimension n which might be the Jacobian linearization of a nonlinear model. Alternatively it may arise from a preceding input-output or input-st...
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SSL protocol realize identity authentication through verifying both sides' certificate, but there are still some drawbacks. Through applying attribute certificate and improving SSL handshake process, we can improv...
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This contribution deals with the generation of oscillations in dynamical systems of higher order. It briefly reviews electrical oscillators from a system theoretic viewpoint and then generalizes the ideas to control s...
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ISBN:
(纸本)9783800734443
This contribution deals with the generation of oscillations in dynamical systems of higher order. It briefly reviews electrical oscillators from a system theoretic viewpoint and then generalizes the ideas to control systems of (in theory) arbitrary finite dimension, which fulfill certain controllability requirements. Applications for the proposed method can be found in the control of underactuated mechanical systems because these are often heavily influenced by discontinuous effects of the actuators. Experimental results are shown for the inverted pendulum on a cart.
Automatically repairing a bug can be a time-consuming process especially for large-scale programs owing to the significant amount of time spent recompiling and reinstalling the patched *** reduce this time overhead an...
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Automatically repairing a bug can be a time-consuming process especially for large-scale programs owing to the significant amount of time spent recompiling and reinstalling the patched *** reduce this time overhead and speed up the repair process,in this paper we present a recompilation technique called weak *** weak recompilation,we assume that a program consists of a set of components,and for each candidate patch only the altered components are recompiled to a shared *** original program is then dynamically updated by a function indirection *** advantage of weak recompilation is that redundant recompilation cost can be avoided,and while the reinstallation cost is completely eliminated as the original executable program is not modified at *** maximum applicability of weak recompilation we created WAutoRepair,a scalable system for fixing bugs with high efficiency in large-scale C *** experiments on real bugs in widely used programs show that our repair system significantly outperforms Genprog,a wellknown approach to automatic program *** the wireshark program containing over 2 million lines of code,WAutoRepair is over 128 times faster in terms of recompilation cost than Genprog.
This paper presents the design of a controller which electrifies vehicles by a direct methanol fuel cell. The project has been prepared based on a 1:4 scaled model of a car. As part of this project, an electronic moth...
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ISBN:
(纸本)9781467344456
This paper presents the design of a controller which electrifies vehicles by a direct methanol fuel cell. The project has been prepared based on a 1:4 scaled model of a car. As part of this project, an electronic motherboard including control algorithms for wireless system monitoring and car control has been developed. For wireless communication between the vehicle and the PC, a connection has been established based on ZigBee PRO standard. This connection is encrypted using an AES-128 algorithm. Finally, in order to verify the performance of the proposed controller, it has been installed on an actual car.
作者：
Cheng ZhangJingjing MaJing YangYafei DongJin XuInstitute of Software
School of Electronics Engineering and Computer Science Key Laboratory of High Confidence Software Technologies of Ministry of Education Peking University No. 5 Yiheyuan Road Haidian District Beijing 100871 People's Republic of China. Electronic address: zhangcheng369@***. Institute of Software
School of Electronics Engineering and Computer Science Key Laboratory of High Confidence Software Technologies of Ministry of Education Peking University No. 5 Yiheyuan Road Haidian District Beijing 100871 People's Republic of China. Electronic address: casy-20@***. School of Control and Computer Engineering
North China Electric Power University No. 2 Beinong Road Huilongguan Changping District Beijing 102206 People's Republic of China. Electronic address: yangjing369@***. College of Life Science
Shaanxi Normal University 199 South Chang'an Road Xi'an 710062 People's Republic of China. Electronic address: dongyf@***. Institute of Software
School of Electronics Engineering and Computer Science Key Laboratory of High Confidence Software Technologies of Ministry of Education Peking University No. 5 Yiheyuan Road Haidian District Beijing 100871 People's Republic of China. Electronic address: DNA@***.
In this study, DNA strand displacement is utilized to control the aggregation of DNA/gold nanoparticles (AuNPs) based on circular DNA, in which DNA/AuNP conjugates are captured and released by adding different DNA sig...
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In this study, DNA strand displacement is utilized to control the aggregation of DNA/gold nanoparticles (AuNPs) based on circular DNA, in which DNA/AuNP conjugates are captured and released by adding different DNA signal strands. Using this strategy, single DNA/nanoparticle building blocks are capable of assembling into complex structures of two and three circular DNA/nanoparticles. The existence of these structures is demonstrated by gel electrophoresis and transmission electron microscopy (TEM) analysis. This advance has potential applications in controlling, transporting and detecting DNA/AuNP conjugates with subsequent manipulation of the structure and function of these assemblies.
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