An example of the construction of acceleration sensors based on fiber-optical displacement transducers with external modulation. Designed the prototype of fiber-optical accelerometer and tested according to the elaborated methodology.
The questions of mathematical modeling of fiber-optic sensors with external modulation. Investigated the effect of the parameters of fiber-optic channels to conversion function.
In most projects aimed at modernization of existing production lines and units a new group of mechatronic objects - interconnected multi-motor electric drives - is used. For the efficient and safe operation of this type of drives it is necessary to solve a number of problems, one of which is the development of methods and tools to synchronize the rotation of activators dynamically. The purpose of the research is to create a non-contact sensor for measuring the rotation of the activator. The basis of the developed sensor is a fiber optic converter with external modulation, with which you can implement a non-contact method of measuring displacement of reflective label installed on the shaft of remote devices. To compensate the non-informative factors affecting the accuracy of the position measurement, the original block diagram and processing algorithm were developed which provides stable and accurate registration of appearing the reflective labels under the fiber end when using the sensor in a production environment. The results of the research have made a theoretical basis for the design of the two measuring devices: a high-speed tachometer and a sensor for control of synchronicity rotation in the dynamic mode.
Investgations of the analog-to-digital converters (ADC) of the variuos types are considered. The detail analyses of five different ADC, requirements to software and error compensation algorithm are presented.
Principles of construction of vibroacceleration sensors based on fiber-optical displacement transducers with external modulation. Designed the layout of fiber-optical accelerometer and tested according to the elaborated methodology.
The comprehensive step-by-step method of the accelerometer choosing for the laser strapdown inertial navigation system of new generation is considered. The results of Si-flex and Q-flex accelerometers research and comparative tests are presented. The advantages and the problems of the above accelerometers connected with pendulum material are described and its influence on the accelerometers accuracy parameters as well as inertial navigation systems's accuracy class and its place among innovative sptrapdown systems are considered
This volume presents new results in the study and optimization of information transmission models in telecommunication networks using different approaches, mainly based on theiries of queueing systems and queueing networks .
The paper provides a number of proposed draft operational guidelines for technology measurement and includes a number of tentative technology definitions to be used for statistical purposes, principles for identification and classification of potentially growing technology areas, suggestions on the survey strategies and indicators. These are the key components of an internationally harmonized framework for collecting and interpreting technology data that would need to be further developed through a broader consultation process. A summary of definitions of technology already available in OECD manuals and the stocktaking results are provided in the Annex section.