现代防御技术 ›› 2026, Vol. 54 ›› Issue (1): 85-95.DOI: 10.3969/j.issn.1009-086x.2026.01.008

• 论文 • 上一篇    下一篇

再论导引头半捷联伺服镜最优控制系统的性能提升

卓佳文1, 史守峡1, 肖登伟2, 李春文1, 樊娜1   

  1. 1.北京遥感设备研究所,北京 100854
    2.北京航天测控技术有限公司,北京 100041
  • 收稿日期:2024-12-23 修回日期:2025-03-05 出版日期:2026-01-28 发布日期:2026-02-11
  • 作者简介:卓佳文(1999-), 女, 陕西咸阳人。硕士生, 研究方向为导航、制导与控制。

Performance Improvement of Seeker Optimal Control System with Semi-strapdown Servo Mirror

Jiawen ZHUO1, Shouxia SHI1, Dengwei XIAO2, Chunwen LI1, Na FAN1   

  1. 1.Beijing Institute of Remote Sensing Equipment,Beijing 100854,China
    2.Beijing Aerospace Measurement & Control Technology Co. ,Ltd. ,Beijing 100041,China
  • Received:2024-12-23 Revised:2025-03-05 Online:2026-01-28 Published:2026-02-11

摘要:

设计了基于线性二次型的最优控制算法,提出利用输出残差积分控制提升最优控制器性能。在忽略摩擦的条件下,建立伺服系统的可控、可观测模型,根据线性二次型最优控制理论,求解伺服系统的最优控制律;研究摩擦对控制器性能造成的影响,并在最优控制回路中加入残差积分控制,提升了稳定阶段系统性能。试验结果表明,对比PID超前-滞后校正控制器,该控制器预置阶段无超调量、调节时间缩短了47%,稳定阶段响应延时减小55%以上,去耦率减小50%以上。加入残差积分控制后,解决了稳定阶段摩擦带来的曲线畸变(平顶与拖尾)问题,去耦率小于4%,延时减小40%以上。振动试验结果表明,设计的最优控制器具有稳定性和鲁棒性,为后续最优控制方法在型号产品上的工程化应用奠定了基础。

关键词: 半捷联导引头, 伺服镜, 最优控制, 线性二次型, 摩擦

Abstract:

This study designed an optimal control algorithm based on linear quadratic regulator (LQR) and proposed the integration of output residual integral control to improve the performance of the optimal controller. A controllable and observable model of the servo system was built under friction-neglected conditions. Based on the LQR optimal control theory, the optimal control law for the system was derived. The influence of friction on the controller's performance was studied, and integral control was incorporated into the optimal control loop to improve steady-stage performance. Experimental results show that, compared with the PID lead-lag compensator, the proposed optimal controller exhibits zero overshoot during the presetting stage, reduces settling time by 47%, decreases steady-stage response delay by more than 55% while lowering the decoupling rate by over 50%. With the addition of output residual integral control, the issues of overshoot and tailing caused by friction in the steady stage are effectively eliminated, resulting in a decoupling rate below 4% and a further delay reduction exceeding 40%. Vibration tests indicate that the designed optimal controller possesses both stability and robustness, thereby laying a foundation for the future engineering application of the optimal control method in product models.

Key words: semi-strapdown seeker, servo mirror, optimal control, linear quadratic regulator, friction

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