An outlook on the DSP dynamic error blind correction of the analog part of the measurement channel

The real time “blind” correction of dynamic error of instrumentation amplifier has been proposed. It bases on the Pfriem postulate, that the system of two analog channels of different time constants is free of dynamic error when the difference of their output signal always equals zero. An extension of this method has been proposed in this paper. The time constants of the transducer may change independently one from another. For correction of the inertial object dynamic error, the differentiation in real time of the transducer output signal is necessary. This operation is performed by DSP. The multiparametric optimisation algorithm changes coefficients of the corrector in that manner to fulfil the Pfriem postulate. A criteria like || ||₂ or || ||_∝ are assumed for the difference between an output corrected signal of each channel. The high order case has also been mentioned