Synthesis of Discrete State Observer by One Measurable State Variable and Identification of Immeasurable Disturbing Influence
Abstract
The entire research presents synthesis of discrete state observer by one measurable state variable and identification of immeasurable disturbing influence, aiming to suggest a procedure for reconstruction of the immeasurable disturbing influence. The suggested solution aims also optimization according to the time of completion of the reconstruction process.
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Introduction
For the aim of analysis and synthesis in state space, an option for direct measurement or reconstruction of the state variables is needed. If such information is hard to be obtained even in case of availability of methods for direct measuring, it is often considered the use of information needed received through other channels. For the purpose of collecting the needed information for the state variables of the system a wide use of observers of full and reduced order, steady-state error free or with steady-state error, is natural. Beside the number of methods and approaches every practical realization is still a matter of interest, especially when if immeasurable disturbing influence is to be taken into consideration for analysis and synthesis.
Conclusion
Analysis of the start processes shows that in 0,5s time are reconstructed the state space variables and identification of disturbance is performed. The steady state error is zero – practically no steady state error occurs. The synthesized discrete observer reconstructs the state variables and identifies the disturbance M12 in terms of shortest period of time possible.