摘要
基于广义时滞系统的可靠性为提高数控加工精度开辟了一条新的途径。广义时滞系统的可靠控制既可作为一般正常系统容错控制的自然延伸,又可被视为实际应用中的现实需要。当执行器、传感器或元部件发生故障时或受到外界干扰时,数控闭环控制系统仍然是稳定的,并具有较理想的特性,解决了在外界干扰和元部件发生故障时数控系统稳定性及加工精度难以保证的难题。因此,广义时滞系统的可靠控制应用到反馈控制器的设计和研究中,不仅具有十分重要的理论意义,而且具有广泛的实际工程前景和应用价值。
The fault diagnosis and fault-tolerant control (Fault Tolerant Con-trol, FTC) of dynamic system based on analytical redundancy open up a new way in order to improve the reliability of complex systems. Fault tolerant control of dynamic systems is accompanied by the development of fault diagnosis technolo-gy,which based on analytical redundancy. When actuators, sensors and compo-nent failure or disturbance by external factors, digital closed loop control system is still stable,and has an ideal characteristics.This can solve the problem of CNC system difficult to guarantee the stability and machining accuracy when the com-ponent failure or disturbance by external factors. Reliable control for singular systems with time-delay not only can be used as a natural extension of normal fault-tolerant control system, but also can be re-garded as the realistic need of practical application. Therefore, reliable control for Singular Systems with time-delay applied to the research of the design and the feedback controller, which not only has the important theory significance,and also has a wide practical prospect and application value.
出处
《职业技术》
2013年第6期61-62,共2页
Vocational Technology
基金
黑龙江省教育厅2012年科研项目(12520016)
关键词
数控加工
广义时滞系统可靠性
精度
NC machining
Reliability of singular systems with time-delay
Accuracy
