METHOD OF CONSTRUCTION INVARIANT MEASURING CIRCUIT AND INVARIANT BRIDGE

摘要

use: the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to measurement technique and can be used in electric.the essence of the u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0: way u0437u0430u043au043bu044eu0447u0430u0435u0442u0441u00a0 that include primary transducers or differential primary converter in graduated surmounted u0431u0440u0430u0437u0443u044eu0449u0443u044e chain, u0438u0437u043cu0435u0440u00a0u044eu0442 value signal proportional to the difference signals in her shoulders, include the primary transducers or differential u043fu0435u0440u0432u0438 u0447u043du044bu0439 converter in u0441u0443u043cu043cu0438u0440u0443u044eu0449u0443u044e transforming circuitu0438u0437u043cu0435u0440u00a0u044eu0442 value signal proportional to the amount and u0434u0435u043bu00a0u0442 last value signal proportional to the difference signals in a differential ol u0435u043eu0431u0440u0430u0437u0443u044eu0449u0435u0439 chain.u0438u043du0432u0430u0440u0438u0430u043du0442u043du044bu0439 wheatstone bridge contains u043fu00a0u0442u044c converters 1 - 5, two of which 1 and 2 u00a0u0432u043bu00a0u044eu0442u0441u00a0 shoulders differential sensor or sensors included dif u0444u0435u0440u0435u043du0446u0438u0430u043bu044cu043du043e and three other 3 - 5, u043fu043eu0441u0442u043eu00a0u043du043du044bu043cu0438 parameters are identical and include a star.in u043fu0438u0442u0430u043du0438u00a0 symmetric about the diagonal bridge converters 3 and 4, has consistently included source u043fu0438u0442u0430u043du0438u00a0 6 and the converter 5, and in measuring the di u0430u0433u043eu043du0430u043bu044c and parallel u043fu0440u0435u043eu0431u0440u0430u0437u043eu0432u0430u0442u0435u043bu044e 5 include, respectively, first and second instruments 7 and 8 which are connected to the entrance of the u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0, block 9 u0434u0435u043bu0435u043du0438u00a0.as a result u0432u044bu043fu043eu043bu043du0435u043du0438u00a0 operation u0434u0435u043bu0435u043du0438u00a0 u043fu043eu043bu0443u0447u0430u0435u0442u0441u00a0 following output signal of measuring bridge, Ui / photo - / (Z0 + z)where d2 is informative u0438u0437u043cu0435u043du0435u043du0438u00a0 parameters of primary converters 1 and 2; Z0 primary importance parameters of primary converters 1 and 2; z - rated are by the parameters of the converter 3 to 5; Ui - u043du0430u043fu0440u00a0u0436u0435u043du0438u0435 at the first u0438u0437u043cu0435u0440u0438u0442u0435u043bu00a0 7 u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0; u2 u043du0430u043fu0440u00a0u0436u0435u043du0438u0435 at the second u0438u0437u043cu0435u0440u0438u0442u0435u043bu00a0 8 u043du0430u043fu0440u00a0u0436u0435u043du0438u00a0. 2 u0441.u043f.u0444 - lu, 1). (l to x | yu eat xi sp