Vestnik of Samara State Technical University. Technical Sciences SeriesVestnik of Samara State Technical University. Technical Sciences Series1991-85422712-8938Samara State Technical University1997810.14498/tech.2014.3.%uResearch ArticleNon-linearity characteristics correction in sensors with approximation usingLangePetr K(Dr. Sci. (Techn.)), Professor-PlatonovIgor A(Dr. Sci. (Techn.)), Professor-UngarovMarat BPostgraduate Student-Samara State Technical UniversityS.P. Korolyov Samara State Aerospace University15092014223535710022020Copyright © 2014, Samara State Technical University2014The problem of nonlinearity characteristics correction of modern microsensors, with use of approximation discrete characteristics is considered . Linearity correction is performed with the use of either direct or inverse characteristics of the sensors. As approximating function of the sensor characteristic a cubic spline - function is used. Approximating function is done by the microprocessor analog converter. The schemes of correcting converter with a functional transducer in a straight chain as well as in a negative feedback of the buffer amplifier are considered. The proposed device can reduce the nonlinearity error sensor characteristics in a few dozen times.sensor characteristicnonlinearity characteristican inverse functionthe correction of non-linearityapproximationamplifierхарактеристика датчиканелинейность характеристикиобратная функциякоррекция нелинейностиаппроксимацияусилитель[Солопченко Г.Н. Обратные задачи в измерительных процедурах // Измерение, контроль, автоматизация. ЦНИИТЭИприборостроения. - 1983. - Вып. 2(46). - С. 32-46.][Ланге П.К. Сплайн-аппроксимация дискретных значений сигналов с применением методов цифровой фильтрации // Вестник Самарского государственного технического университета. Сер. Физико-математические науки. - Самара: СамГТУ, 2003. - Вып. 19. - С. 134-138.]