In the comparison with SARS-CoVof 2003,SARS-CoV-2 is extremely well adapted to the human populations and its adaptive shift from the animal host to humans must have been even more *** the blind watchmaker argument,suc...
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In the comparison with SARS-CoVof 2003,SARS-CoV-2 is extremely well adapted to the human populations and its adaptive shift from the animal host to humans must have been even more *** the blind watchmaker argument,such an adaptive shift can only happen prior to the onset of the current pandemic and with the aid of step-by-step selection.
Under large interference, in order to keep the surface-mounted permanent magnet synchronous motor with better operating characteristics, real-time identification of the parameters such as resistance, inductance and fl...
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ISBN:
(数字)9781728176871
ISBN:
(纸本)9781728176888
Under large interference, in order to keep the surface-mounted permanent magnet synchronous motor with better operating characteristics, real-time identification of the parameters such as resistance, inductance and flux linkage during motor operation becomes very necessary. This paper proposes an online self-applicable identification method for motor parameters based on recursive least squares method. The parameter identification model is analyzed in Matlab / Simulink, which proves that the method can accurately identify the values of resistance, inductance and flux linkage parameters. It also proves the value of this method.
In order to improve the power quality of AC/DC hybrid micro-grid and the response characteristics when the load changes, an AC/DC micro-grid containing wind turbine, photovoltaic power generation unit, fuel cell and e...
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ISBN:
(数字)9781728176871
ISBN:
(纸本)9781728176888
In order to improve the power quality of AC/DC hybrid micro-grid and the response characteristics when the load changes, an AC/DC micro-grid containing wind turbine, photovoltaic power generation unit, fuel cell and energy storage equipment is established, and the ILC power control strategy is used to optimize the system. The transient responses of micro-grid to load transformations under different control strategies are simulated and compared, which verify the superiority of ILC power control strategy and provide a simulation platform for the further study of the micro-grid.
This paper is concerned with the simultaneous stability of the multi-mode large-scale systems composed of the interaction subsystems. A novel distributed control network consisting of multiple network-based controller...
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This paper is concerned with the simultaneous stability of the multi-mode large-scale systems composed of the interaction subsystems. A novel distributed control network consisting of multiple network-based controllers with the partial information exchange is adopted to simultaneously stabilize the large-scale systems in multiple operation modes. In the distributed control network (DCN), a partial state information exchange approach is developed to save the real-time communication and computation resources. To compensate for the effects of dynamic couplings between interaction subsystems, the designed controllers use both the local states and the neighbors' partial information with packet dropouts for local feedback design. Then, a series of Lyapunov functions are constructed to derive a matrix-inequality-based sufficient condition for the existence of the desired controllers. Based on an orthogonal complement technique, the gains of the controllers in DCN are parameterized. The iterative algorithm for the solution of simultaneous stabilization problem is also developed. Finally, a numerical example is performed to show the relevant feature of the proposed method.
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