持续外力作用下加速度响应输出最优控制设计

在船舶海洋工程振动主动控制中，最优控制系统的设计必须考虑持续未知外力的作用．在某些场合，加速度响应可能成为结构振动控制的评价标准之一；从测量角度讲，加速度响应测量较为简单，在这种情况下输出方程中含有状态量的微分项．为建立以加速度响应为反馈信息之一或中心的反馈因子的演算规则，作两步处理：对于具有部分先验知识的外力，可假定满足特定关系的微分关系，通过对原系统的状态方程作相应扩张的特殊处理，使其成为标准形式；探讨了测量加速度响应时，输出方程的两种表达形式，并从理论上给出了两种输出方程形式下，振动控制系统及观察器的设计．理论推导表明，加速度响应反馈控制实现的可能性，同时观察器应作相应变化．

Optimal Control Design with Continuous Disturbance and Acceleration Output

In the active vibration control of NAOE, the design of optimal control system should take consideration of continuous and unmeasurable/not directly measurable disturbances such as vibration forces of main engine and propeller. In certain cases, the acceleration responses might become one of the vibration control criterions. From the point of measurement, it is easy to get acceleration responses. The differential items of state vector are introduced into the output equations. With special dispo sal to the disturbances satisfying a certain relation, the design of vibration control system and observer are given with two different assumptions in style of output equations.