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1. Necessary and sufficient condition for stochastical stability of positive Markov jump linear systems | |||
CHEN Ying, BO Yu-ming, ZHANG Jie | |||
Electrics, Communication and Autocontrol Technology 30 November 2015 | |||
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Abstract:This paper addresses the stochastical stability problem of positive Markov jump linear system. In particular, a necessary and sufficient condition for this problem is given which can be checked by solving linear programming feasibility problems due to the positivity property. At last, two numerical examples are presented to show the effectiveness of the proposed results. | |||
TO cite this article:CHEN Ying, BO Yu-ming, ZHANG Jie. Necessary and sufficient condition for stochastical stability of positive Markov jump linear systems[OL].[30 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4667162 |
2. Event-Based H∞ Control of Platoon Control Systems with Network-Induced Delays and External Disturbances | |||
SHAO Siyuan,BO Yuming | |||
Electrics, Communication and Autocontrol Technology 19 November 2015 | |||
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Abstract:In this paper, an event-triggered control problem in array-like autonomous platoon control system with network-induced delay is investigated. Firstly, a novel six-order linear kinematic model of each autonomous vehicle and a novel state error model of array-like autonomous platoon control system are constructed. Secondly, the corresponding delay system is modelled. Then, by employing the constructed model and Lyapunov functional approach, a co-design method of both the H_infinity controller and the parameters of event-triggered condition for each following vehicle is proposed. The feedback gain matrix and the event-triggering matrix corresponding to each autonomous vehicle can be obtained by employing LMI technique. Finally, a simulation example is presented to demonstrate the effectiveness of the proposed co-design method. | |||
TO cite this article:SHAO Siyuan,BO Yuming. Event-Based H∞ Control of Platoon Control Systems with Network-Induced Delays and External Disturbances[OL].[19 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4663519 |
3. Design for Motor Speed Fractional Order Controller Based on Improved Artificial Bee Colony Algorithm | |||
Huang Liangsong,Yuxia Li | |||
Electrics, Communication and Autocontrol Technology 20 September 2015 | |||
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Abstract:The fractional order PID controller has better performance than the traditional PID controller for servo motor control systems. However, according to the design criteria, the best parameters of fractional order controller exist in nonlinear transcendental equations which are difficult to be solved. In this paper, we adopt artificial bee colony (ABC) algorithm to optimize the solutions of equations. Considering that the standard ABC algorithm is good at exploration but poor at exploitation, we propose an improved ABC algorithm and introduce the powder place elimination mechanism in the search strategy, which decreases the inferior candidate solutions selected randomly by colony bees to search new solutions and narrows the scope of search gradually to improve the ability of local exploitation and speed of convergence. We designed motor speed fractional order controller with the parameters optimized by improved ABC algorithm, results of simulation experiments verified the feasibility, effectiveness and practicability of the algorithm. | |||
TO cite this article:Huang Liangsong,Yuxia Li. Design for Motor Speed Fractional Order Controller Based on Improved Artificial Bee Colony Algorithm[OL].[20 September 2015] http://en.paper.edu.cn/en_releasepaper/content/4655452 |
4. Design of Dynamic Model with Adaptive Nonlinear Friction Compensation for Vacuum Parallel Manipulator | |||
Huang Liangsong,Yuchuan Huang,Yuxia Li | |||
Electrics, Communication and Autocontrol Technology 17 August 2015 | |||
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Abstract:A dynamic model and a method of adaptive nonlinear friction compensation with parametric uncertainties of vacuum parallel manipulator are designed. For the specificity of mechanical structure of manipulator, the composite motions of manipulator are decomposed into three decoupled motions, and a practical and simple dynamic model is designed. For the problems of friction models at present, a method of adaptive nonlinear friction compensation base on modified Dalh model is designed, which is well stable and feasible. The control system of manipulator with current feedforward compensations of dynamic model is designed, results of experiment indicate that the design improves the trajectory tracking and motion performances of vacuum parallel manipulator, which can be implemented in practical applications. | |||
TO cite this article:Huang Liangsong,Yuchuan Huang,Yuxia Li. Design of Dynamic Model with Adaptive Nonlinear Friction Compensation for Vacuum Parallel Manipulator[OL].[17 August 2015] http://en.paper.edu.cn/en_releasepaper/content/4651809 |
5. A Design and Implementation of 500GSPS Random Equivalent Sampling | |||
QIU Duyu,TIAN Shulin,TAN Feng,ZENG Hao,HUANG Wuhuang | |||
Electrics, Communication and Autocontrol Technology 23 July 2015 | |||
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Abstract:With the increase in horizontal scanning speed, the time observing window narrows down, so the high random equivalent sampling rate is needed. There are two key points that determine equivalent sampling rate, namely real-time sampling rate of analog-digital converter and high resolution of time interval measurement. In this paper, a method of multichannel random equivalent sampling based on time-interleaved ADC structure is proposed. the crucial time-interval measurement circuit based on time to Amplitude was introduced and explored. Besides, a high-speed trigger channel is needed for high speed data acquire, the relationship of trigger signal and data synchronized clock was discussed, and the circuit of trigger channel was gave. The experimental data show that 500GSPS random equivalent sampling rate was obtain. The method given in the article can also be extended into wide ranges of high speed data acquisition system such as Time domain reflectometer, and jitter analyzer etc. | |||
TO cite this article:QIU Duyu,TIAN Shulin,TAN Feng, et al. A Design and Implementation of 500GSPS Random Equivalent Sampling[OL].[23 July 2015] http://en.paper.edu.cn/en_releasepaper/content/4651009 |
6. Boundary control of an axially moving system with high acceleration/deceleration | |||
Yu LIU,Zhijia ZHAO | |||
Electrics, Communication and Autocontrol Technology 22 May 2015 | |||
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Abstract:In this paper, boundary vibration suppression for an axially moving belt with high acceleration/deceleration under the spatially varying tension and unknown disturbances is investigated. To suppress the belt's vibration and avoid control spillover, a nonhomogeneous model of the axially moving system is derived from the extended Hamilton's principle. Based on this infinite-dimensional model, robust control theory is introduced to deal with the effect of boundary disturbance. The stability and uniform boundness of the developed control system are both proved using Lyapunov direct method. Simulation results illustrate the effectiveness of the proposed boundary control method. | |||
TO cite this article:Yu LIU,Zhijia ZHAO. Boundary control of an axially moving system with high acceleration/deceleration[OL].[22 May 2015] http://en.paper.edu.cn/en_releasepaper/content/4644785 |
7. Application of PID Controller based on Improved BPNN in the Magnetic Inertial Measurement System | |||
LI Deqiang,ZHANG Yangan | |||
Electrics, Communication and Autocontrol Technology 07 January 2015 | |||
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Abstract:To adapt slow time variation of the hardware parameters and nonlinearities in Magnetic Inertial Measurement System (MIMS), the improved Back Propagation Neural Network (BPNN) algorithm is effectively integrated to the traditional PID controller. BPNN has the ability to represent any nonlinear functions, which can achieve the best combination of PID three coefficients in real time online learning. Using BPNN can help to build the coefficient self-learning PID controller in MIMS. The simulation which was established in MATLAB indicates that the improved BPNN PID controller can improve the robustness of system and has high accuracy control. At last, experiments in MIMS convincingly verified the simulation. | |||
TO cite this article:LI Deqiang,ZHANG Yangan. Application of PID Controller based on Improved BPNN in the Magnetic Inertial Measurement System[OL].[ 7 January 2015] http://en.paper.edu.cn/en_releasepaper/content/4627112 |
8. Continuous Non-singular Terminal Sliding Mode Control of Permanent-Magnet Synchronous Motor with Load Torque Observer | |||
WANG Yanmin | |||
Electrics, Communication and Autocontrol Technology 24 December 2014 | |||
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Abstract:This paper proposes a novel continuous non-singular terminal sliding mode (NTSM) control scheme for permanent-magnet synchronous motor (PMSM) speed system with unknown load torque. Utilizing the concept of relative degree, a continuous NTSM control method is proposed and applied to the decomposed speed and current double closed-loop vector control system, which features of finite-time convergence property proved by the comparison with the commonly used super-twist algorithm and second-order NTSM method. Meanwhile, a Luenberger observer is designed to estimate the unknown load torque. Simulation results shows that the proposed control scheme possesses the advantages of fast transient responses, no over-shoot and resistance to load disturbances.????? | |||
TO cite this article:WANG Yanmin. Continuous Non-singular Terminal Sliding Mode Control of Permanent-Magnet Synchronous Motor with Load Torque Observer[OL].[24 December 2014] http://en.paper.edu.cn/en_releasepaper/content/4625339 |
9. Robust state estimation for uncertain linear systems with random parametric uncertainties | |||
LIU Hua-Bo, ZHOU Tong | |||
Electrics, Communication and Autocontrol Technology 02 December 2014 | |||
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Abstract:In this paper, we investigate state estimations of a dynamical system with random parametric uncertainties which may arbitrarily affect a state-space plant model.A robust estimator is derived based on expectation minimization of estimation errors. %The state estimator based on nominal model of the plant will introduce an appreciable bias proportional to the known input signal owing to parameter uncertainties.An analytic solution similar to that of the well-known Kalman filter is derived for this new robust estimator which can be realized recursively with a comparable computational complexity.Under some weak assumptions, %some important and attractive properties of this robust estimator such as convergence and boundedness are investigated,it is proved that this estimator converges to a stable system, the covariance matrix of estimation errors is bounded, and the estimation is asymptotically unbiased. Numerical simulations show that the obtained robust filter has an estimation accuracy comparable to other estimators and can be applied in a wider range. | |||
TO cite this article:LIU Hua-Bo, ZHOU Tong. Robust state estimation for uncertain linear systems with random parametric uncertainties[OL].[ 2 December 2014] http://en.paper.edu.cn/en_releasepaper/content/4621299 |
10. A Study On Word Activation Forces Based Lattice Rescoring | |||
Wang Yue,Liu Gang | |||
Electrics, Communication and Autocontrol Technology 19 November 2014 | |||
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Abstract:For the sake of improving the system accuracy in large vocabulary continuous speech recognition,nowadays,many use external knowledge scores to rescore lattice in second-time decoding. But few tries to focus to solve the problem of sacking long distance dependency information, neither in the language model we use to decode nor in the knowledge scores they give to rescore lattice. Word Activation Forces can give us the long distance dependency information we need. In this paper, A word activation forces based lattice rescoring method was proposed to give the long distance dependency information between words. As shown in the experiment result, the rescored lattice we use to get a one-best result can significant reduce the word error rate. | |||
TO cite this article:Wang Yue,Liu Gang. A Study On Word Activation Forces Based Lattice Rescoring[OL].[19 November 2014] http://en.paper.edu.cn/en_releasepaper/content/4617668 |
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