Vibration isolation controllers are used to suppress undesirable disturbance in order to guarantee better performance in many industrial and scientific domains. To overcome the drawbacks of the conventional passive sy...
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ISBN:
(纸本)9781424417056
Vibration isolation controllers are used to suppress undesirable disturbance in order to guarantee better performance in many industrial and scientific domains. To overcome the drawbacks of the conventional passive systems, a novel design based on the action dependent heuristic dynamic programming (ADHDP) is addressed in this paper for the semi-active vibration isolator. ADHDP, derived from dynamic programming, is adopted in the design of a nonlinear optimal vibration controller. This approach is the simplest category of adaptive critic designs (ACDs) which are very efficient to solve a class of nonlinear optimal control problems. Only two subnetworks are involved in ADHDP, namely the action network and the critic network. Least mean square (LMS) algorithm with variable learning rate is applied to the adaptation of these two networks. A single-stage training process is also demonstrated as a useful training strategy. Two types of vibrations are utilized to verify the effectiveness of this control design. Simulation results show that the semi-active vibration isolator is able to reduce the influence of the vibration excitation to the payload significantly in comparison with the passive system.
Effective control of multi-qubit systems is an important task for quantum computation and quantum control. An incoherent control approach for multi-qubit systems using quantum measurement and quantum learning is studi...
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Multi-Input Single-Output (MISO) Wiener system is comprised of a multi-dimensional linear subsystem and a memoryless nonlinear block. In this paper a disturbed MISO Wiener system is concerned, of which the nonlinearit...
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Multi-Input Single-Output (MISO) Wiener system is comprised of a multi-dimensional linear subsystem and a memoryless nonlinear block. In this paper a disturbed MISO Wiener system is concerned, of which the nonlinearity is discontinuous piece-wise linear characteristic. A recursive algorithm is proposed for identifying all of unknown system parameters. It is shown that the algorithm is convergent. Finally, some simulation results illustrate the identification theoretic results.
作者：
Wenkui ZhuWenli SongWeigang LinState key Laboratory of Multi-phase Complex system
the Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P.R.China Graduate School
Chinese Academy of Sciences Bejing 100190 P.R.China State key Laboratory of Multi-phase Complex system the Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P.R.China
This paper studies fuzzy hyperbolic guaranteed cost control for certain nonlinear systems with parameter uncertainties. As same as Takagi-Sugeno (T-S) fuzzy model, fuzzy hyperbolic model (FHM) can be used to establish...
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This paper studies fuzzy hyperbolic guaranteed cost control for certain nonlinear systems with parameter uncertainties. As same as Takagi-Sugeno (T-S) fuzzy model, fuzzy hyperbolic model (FHM) can be used to establish the model for certain unknown complexsystem. Furthermore, the main advantage of using FHM over T-S fuzzy model is that no premise structure identification is need and no completeness design of premise variables space is need. Also a FHM is a kind of valid global description and nonlinear model in nature. First, the fuzzy hyperbolic model (FHM) is proposed to represent the state-space model for certain nonlinear systems. Next, a nonlinear quadratic cost function is considered as a performance measurement of the closed-loop fuzzy system. Some sufficient conditions are provided for the construction of a fuzzy hyperbolic guaranteed cost controller via state feedback. These conditions are given in terms of the feasibility of linear matrix inequalities (LMIs). A simulation example is provided to illustrate the design procedure of the proposed method.
We show that the response of the curvature of cantilevers to changes in their surface stress depends significantly on the topology of the surface. The origin is the transverse coupling between the out-of-plane and in-...
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We show that the response of the curvature of cantilevers to changes in their surface stress depends significantly on the topology of the surface. The origin is the transverse coupling between the out-of-plane and in-plane components of the surface-induced stress. Deliberate structuring of the surface allows the magnitude and even sign of the cantilever response to be tuned, and experiments measuring the surface stress on nominally planar surfaces require a correction when there is roughness.
作者：
Xin CuiXinhua LiuGuang SunToshiyuki SudaMasahiro NarukawaYunyi LiuGuogang SunGuangwen XuSchool of Chemical Engineering
Shenyang Institute of Chemical Technology Shenyang 110142 China Research Laboratory/HI Corporation Ltd.(/HI) Isogo-Ku Yokohama 235-8501 Japan Faculty of Chemical Engineering China University Of Petroleum (Beijing) Beijing 102249 China School of Chemical Engineering Shenyang Institute of Chemical Technology Shenyang 110142 China State Key Laboratory of Multi-Phase Complex System
Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Faculty of Chemical Engineering
China University Of Petroleum (Beijing) Beijing 102249 China State Key Laboratory of Multi-Phase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China State Key Laboratory of Multi-Phase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China
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