中文摘要：

针对量测干扰下一种异类过驱动系统中残差与干扰存在耦合关系的问题,提出一种运用空间几何方法实现残差对干扰解耦的新算法.通过设计残差生成器并实现残差对系统输入和量测干扰的解耦,由残差值反馈故障检测情况,根据不可观测子空间中的空间分割建立结构化残差集,使得残差集与故障集满足完全对应关系,完成故障的隔离.最后通过提出对比仿真算例验证了我们所提算法的可行性和有效性.

英文摘要：

Aiming at the problem of coupling between residuals and disturbances in a kind of abnormal overactuated system under measurement disturbances, this paper presents a novel algorithm based on space geometry approach to achieve the decoupling of residuals from disturbances. Through designing a proper residual generator and implementing the decoupling of the residuals from system inputs and measurement disturbances, the residuals reflect the fault detection status. By applying space division to the unobservability subspace, the structured residual set is established, which is exactly corresponding to fault set, and therefore the fault isolation is achieved. Finally, simulation examples show the feasibility and effectiveness of the presented algorithm.