Analysis and Compensation of Installlation Axial Angle Errors of Semi-strapdown IMS

The source and gemeration mechanism of installation axial angle errors of semi-strapdown inertial measurement system( IMS) and their effects on the attitude measuring accuracy are analyzed,and the mathematical expression of the influence is theoretically derived. A graded compensation method is proposed for error compensation. The proposed method is used to compensate the installation angle errors […]

Pressure Compensation and Correction for Differential Pressure Water Level Gauge of Sub-critical Drum Boilers

To reduce the influence of boiler pressure on indicating value of the differential pressure drum level gauge in sub-critical power units, an analysis has been performed on the working principles of differential pressure water level gauges, thus obtaining the rule of violent changes in indication due to pressure fluctuation. Corresponding adjustment methods are proposed, so […]