Abstract: In order to accurately measure the bias weight parameters of the balance wheel of watch,anew phase compensation method is proposed to obtain the parameter model of phase deviation in the signal conditioning circuit. Firstly, multisim 14.0 simulation software obtains the phase frequency characteristic curve of the conditioning circuit, then the data in the curve is input into the Excel table, after thatthe trend curve and phase frequency characteristic equation are generated. The bias angle of the balancewheel is calculated and finally the bias weight of the balance wheel is measured by conversion. The ex-perimental platform is constructed and the experiment is carried out according to this method, The resultsshow that this method can quickly and accurately measure the balance wheel bias parameters. The methodis simple with high precision and is easy to be embedded in various signal processing systems. lt has beenapplied in practical engineering and has popularization value.

Key words: phase comepensation, balance wheel bias weight parameter, signal conditioning circuit;phase-frequency characteristics