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针对惯导系统传统阻尼方法存在的阻尼网络设计复杂、状态切换产生较大超调误差等主要问题,提出了一种基于变阻尼比例控制的惯导水平内阻尼方法,在无阻尼惯导东向、北向水平修正回路中增加一条前向比例环节通道,通过合理设计比例参数,利用提取的加速度信息进行惯导水平内阻尼,抑制惯导中舒拉振荡误差。相对于传统阻尼方法,该方法使得阻尼网络设计大为简化。该方法通过连续调整比例控制系数,可实现阻尼系数的连续线性修正,能有效抑制无阻尼状态向阻尼状态切换时超调误差。
Aiming at the main problems of traditional damping method of inertial navigation system, such as complex design of damping network and large overshooting error caused by state switching, a damping method of horizontal inertial navigation based on variable damping ratio control is proposed. , A northward horizontal correction loop is added with a forward proportional link channel. By reasonably designing the proportional parameters, the accelerometer information is used for horizontal inertial damping to suppress the Shula oscillation error in inertial navigation. Compared with the traditional damping method, this method greatly simplifies the damping network design. By continuously adjusting the proportional control coefficient, the method can realize the continuous linear correction of the damping coefficient, and can effectively suppress the overshooting error when the damping state is switched from the undamped state to the damping state.