The paper presents research on the accuracy of measuring illuminance and chromaticity of airport lamps. The impact of the type of DC and AC power supply on measurement was assessed with the use of electronic sensors. ...
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This paper focuses on bridge inspections performed by intelligent unmanned aerial vehicles (UAV). For this, small data loggers are placed by the UAVs at the bridge, which have to be removed later. In our previous work...
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It has now been confirmed that the main cause of dementia is Alzheimer's disease. It is characterized as neurodegenerative, chronic, progressive, and belonging to the category of incurable. The clinical picture of...
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This article presents the results of the study of cascade PLI filters to justify the selection damping coefficient in order to increase the noise resistance system and create a software complex for ECG signal processi...
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This article discusses the general issues of designing modular mobile robotic platforms (MRPs), which are transport agents in internal logistics systems. The proposed algorithm for the synthesis of robotic systems dev...
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This article discusses the general issues of designing modular mobile robotic platforms (MRPs), which are transport agents in internal logistics systems. The proposed algorithm for the synthesis of robotic systems develops the previously obtained research results of mecanum platform design methods and expands their use as transport agents in the field of e-commerce. The document presents not only general design issues of modular MRPS, but also indicates possible areas of research, offers specific solutions and develops a number of prototypes for omnidirectional platforms.
The electron transmission properties in a model of two chained orthogonal quantum rings with input and output wires were investigated by using the quantum graph theory and quantum waveguide theory. The model was obtai...
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This paper presents a methodology for designing high-frequency transformers operating at 20 kHz made for operation in dual active bridge converter with a voltage setup of 600V/3x100V. The paper begins by explaining th...
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The system of two coupled optical dual-mode waveguides is considered. The coupling of the system is studied to find a circuit for building a control switch for two qubit gates. The classical coupled mode theory is app...
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This research paper considers the possibility of using an acoustic emission control method in the process of direct laser melting to determine the moment of the development of cracking in the samples being melted unde...
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This paper is addressed to the problem of state estimation for permanent magnet synchronous motors (PMSMs) with uncertain parameters. The proposed observer of flux, rotor position and speed uses measurements of stator...
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ISBN:
(数字)9798350373974
ISBN:
(纸本)9798350373981
This paper is addressed to the problem of state estimation for permanent magnet synchronous motors (PMSMs) with uncertain parameters. The proposed observer of flux, rotor position and speed uses measurements of stator currents and control voltages only. Moreover, it is assumed that all the motor parameters are unknown. The designed estimation algorithm generates estimates of several parameters that are used by the state observer. Presented approach is based on motor model transformation that results in a linear regression model with unknown parameters and application of Kreisselmeier’s dynamic extension of the regressor with suitable mixing. It is shown that parameter and state estimates converge in a fixed time under some reasonable assumptions. Simulation results demonstrate efficiency of the proposed solution for a typical scenario of motor operation.
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