Дослідження моделей перехідної характеристики термопари
| dc.contributor.author | Козир, О. В. | |
| dc.contributor.author | Туз, Ю. М. | |
| dc.date.accessioned | 2023-05-10T10:23:48Z | |
| dc.date.available | 2023-05-10T10:23:48Z | |
| dc.date.issued | 2019 | |
| dc.description.abstractother | The article presents models of the transient response of a thermocouple for a different number of time constants. Identification of the dynamic characteristics of thermocouples is an important component of dynamic measurements. Dynamic characteristics are used to estimate dynamic errors of thermocouple and to recover instantaneous temperature values from dynamic measurement results. The most suitable for practical implementation is to determine the transient response of the thermocouple. There are several ways to create fast temperature change on a sensitive element of a thermocouple. Obtained transient response of the thermocouple should be approximated by the model that most accurately describes the dynamic properties of the thermocouple. It is extremely important to choose very flexible model that can be suit to a specific thermocouple. The entire class of models should be specified. The simplest class of models for transient response approximation is linear model. Polynomials have been widely used in the problems of interpolation and approximation of empirical data. However, the intuitive approach to the choice of polynomial degree and the presence of boundary condition errors limits the use of polynomials as a model for approximation. Also, the polynomial model does not fully reflect the dynamic properties of the thermocouple, which are due to its thermal inertia and the presence of different heat exchange paths of the thermocouple design elements and the environment. The transient response is described by the sum of exponents. The number of time constants is taken from one to six. The resulting models depend only on the time constants and do not depend on the coefficients at the exponents. This reduces the dimension of the search space of the objective function in approximation problems. In turn, this leads to an increase in the accuracy of determining time constants. The article considers the influence of time constant value separation of transient characteristic on the values of the coefficients at the exponents. | uk |
| dc.format.pagerange | С. 13-22 | uk |
| dc.identifier.citation | Козир, О. В. Дослідження моделей перехідної характеристики термопари / О. В. Козир, Ю. М. Туз // Інформаційні системи, механіка та керування : науково-технічний збірник. – 2019. – Вип. 20. – С. 13-22. – Бібліогр.: 4 назви. | uk |
| dc.identifier.doi | http://doi.org/10.20535/2219-3804202019194307 | |
| dc.identifier.uri | https://ela.kpi.ua/handle/123456789/55506 | |
| dc.language.iso | uk | uk |
| dc.publisher | КПІ ім. Ігоря Сікорського | uk |
| dc.publisher.place | Київ | uk |
| dc.relation.ispartof | Інформаційні системи, механіка та керування : науково-технічний збірник, 2019 р., Вип. 20 | uk |
| dc.title | Дослідження моделей перехідної характеристики термопари | uk |
| dc.type | Article | uk |
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