基于DSP的船舶电力推进系统滤波装置控制器设计

小型船舶电力系统中非线性负载多、谐波污染严重。针对这一情况,本文设计一款基于DSP的电力系统滤波装置控制器,该控制器结构简单,稳定性好,实验证明该控制器能有效降低谐波污染,具有一定实用价值。

INS positioning error correction based on acoustic propagation time compensation

In allusion to positioning error correction for underwater vehicle INS(Inertial Navigation System), the INS/multi-becons acoustic range measurements integrating method is proposed. The error result from vehicle motion and acoustic propagation time is mainly analyzed, and a correcting positioning error algorithm based on acoustic propagation time compensation is presented. In this algorithm, the EKF(Extended Kalman Filters) is adopted, and the measurement equation is reconstructed via pushing-forward the INS’s position error states. As a result, the measurement equation and the system measurement become synchronous, and the error from time delay is eliminated. The simulation results indicate that the algorithm can significantly improve the accuracy of correcting INS positioning error with INS/multi-becons acoustic range measurements integrated navigation system.