Research for SINS Damping Overshoot Error Suppression Algorithm
Abstract：A double-model based SINS damping overshoot error suppression algorithm is proposed to solve the problem that there will be an overshoot when SINS's working condition is switched. Based on the SINS mechanical layout, the aclinic loop control model is estab- lished. The mechanism why there will be an overshoot when SINS's working condition is switched between damping and no damping is ana- lysed. On this basis, the damping and no damping navigation decoding algorithm is designed using no damping navigation output to correct damping navigation output during the overshoot period. In this way, the overshoot error is restrained. The output of SINS IMU is accessed to the two solution loops. Two loops calculate the navigation parameters independently at the same time. INS outputs the navigation parame- ters of the no damping network when the system working in no damping state. And INS still outputs the navigation parameters of the no damping loop during the overshoot period. Then, after the overshoot period, INS outputs the navigation parameters of the damping network. The simulation results show that this algorithm can inhibit SINS's overshoot error when the damping state switches. At the same time, this algorithm makes the design of correction circuit simple and the system reliable.
Keywords：SINSdsampingovershootdouble-model
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 39-41 )