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Precision phase measurements are necessary in many sectors of the measuring equipment. The most important parameters of these devices: 1) carrier frequency range; 2) changing range of the measured phase difference; 3) the phase measurement error; 4) frequency range for phase increments. The paper discusses the opportunities and challenges for precise measurement of phase differences for these purposes.
The authors have developed a software component of firmware complex “AKTOMIKA” intended for processing of satellite images with meteorological other purposes. The paper discusses the achievements and prospects of development of the current system. It presents illustrations showing the results of the system working.
The paper discusses the basic problems of frequency measuring and methods for improving the accuracy of these measurements. It reveals shortcomings of counting method and the advantages of the method of integral periods. Also it discusses the division of frequency measurement between standard and unique devices for these purposes.
In this paper the possibility of stabilization problem decision of Rotating Pendulum electromechanical system is discussed. The schematic representation of observable system is pictured and the nonlinear differential equations which describe this system behavior are presented. The transition to reductive model is realized and the research of its main qualitative properties is executed. Modeling the...
the possibility of stabilization problem decision of Rotating Pendulum electromechanical system is discussed. The schematic representation of observable system is pictured and the nonlinear differential equations which describe this system behavior are presented. The transition to reductive model is realized and the research of its main qualitative properties is executed. Modeling the closed-loop...
"Summary form only given. The integral quality criteria for the estimation of closed dynamic feedback-control systems are researched. The method for the taking into account of the restricted overshoot demand is suggested. The example of the use of modified by such way criterion for the third-order object is given. The optimization results with PID- regulator and with PIDD-regulator are compared...
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