产品替代特别是不可逆产品替代使得很多企业面临死亡的威胁。
Many enterprises have to face the threat of death because of the influence of irreversible product substitution.
针对着陆过程中动态方程的非最小相位特性，利用在线稳定逆产生用于着陆轨迹精确跟踪的前馈输入和状态参考轨迹。
Taking the problem of autonomous precise landing as an integration of trajectory tracking and robust control, precise landing control law was designed based on online stable inversion and SMC.
针对着陆过程中动态方程的非最小相位特性，利用在线稳定逆产生用于着陆轨迹精确跟踪的前馈输入和状态参考轨迹。
Taking the problem of autonomous precise landing as an integration of trajectory tracking and robust control, precise landing control law was designed based on online stable inversion and SMC.
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