The nonlinear dynamic system of spacecraft with uncertainty and coupling is analyzed and its general dynamical equation is given.The decoupling-ability and controllability are proved.Aiming at this system,a new nonlin...The nonlinear dynamic system of spacecraft with uncertainty and coupling is analyzed and its general dynamical equation is given.The decoupling-ability and controllability are proved.Aiming at this system,a new nonlinear decoupling controlling method is put forward by synthetically using the variable structure and fuzzy theory.The simulation results show that this method is effective in tracking performances under the existence of uncertainty and outer disturbance.展开更多
In the process of missile large attack angle reentry,there exist nonlinear,strong coupling uncertainty and multi-input-multi-output(MIMO)in the movement equations,so the traditional small disturbance faces difficultie...In the process of missile large attack angle reentry,there exist nonlinear,strong coupling uncertainty and multi-input-multi-output(MIMO)in the movement equations,so the traditional small disturbance faces difficulties.For such situations,the method of feedback linearization is adopted to control the complex system,and the control method based on the fuzzy adaptive nonlinear dynamic inversion decoupling control of missile is proposed in the paper.According to the principle of time-scale separation,the system is separated into fast loop and slow loop,the method of dynamic inversion is applied to them,and the method of adaptive fuzzy approach is adopted to compensate for the uncertainty of the fast loop.The simulation results denote the control method in the paper has a better tracing characteristic and robustness.展开更多
在简单介绍了姿态角和地磁场的基础上,分析了电子罗盘工作原理,设计了基于磁阻传感器、MEMS加速度传感器及SoC(System on Chip)MCU的电子罗盘。根据其构成的主要器件,分析、补偿和计算了系统误差。该电子罗盘具有体积小、重量轻、功耗...在简单介绍了姿态角和地磁场的基础上,分析了电子罗盘工作原理,设计了基于磁阻传感器、MEMS加速度传感器及SoC(System on Chip)MCU的电子罗盘。根据其构成的主要器件,分析、补偿和计算了系统误差。该电子罗盘具有体积小、重量轻、功耗低、价格低和精度高等优点。试验结果表明其能够很好地用于微型和超小型飞行器的姿态控制与导航。展开更多
文摘The nonlinear dynamic system of spacecraft with uncertainty and coupling is analyzed and its general dynamical equation is given.The decoupling-ability and controllability are proved.Aiming at this system,a new nonlinear decoupling controlling method is put forward by synthetically using the variable structure and fuzzy theory.The simulation results show that this method is effective in tracking performances under the existence of uncertainty and outer disturbance.
文摘In the process of missile large attack angle reentry,there exist nonlinear,strong coupling uncertainty and multi-input-multi-output(MIMO)in the movement equations,so the traditional small disturbance faces difficulties.For such situations,the method of feedback linearization is adopted to control the complex system,and the control method based on the fuzzy adaptive nonlinear dynamic inversion decoupling control of missile is proposed in the paper.According to the principle of time-scale separation,the system is separated into fast loop and slow loop,the method of dynamic inversion is applied to them,and the method of adaptive fuzzy approach is adopted to compensate for the uncertainty of the fast loop.The simulation results denote the control method in the paper has a better tracing characteristic and robustness.
文摘在简单介绍了姿态角和地磁场的基础上,分析了电子罗盘工作原理,设计了基于磁阻传感器、MEMS加速度传感器及SoC(System on Chip)MCU的电子罗盘。根据其构成的主要器件,分析、补偿和计算了系统误差。该电子罗盘具有体积小、重量轻、功耗低、价格低和精度高等优点。试验结果表明其能够很好地用于微型和超小型飞行器的姿态控制与导航。
