为了解决中国核电应急柴油机控制系统长期依赖进口的问题,自主研制了智能数字控制单元(smart digital control-nuclear,SDC-N)冗余式控制系统。该控制系统分别针对硬件和软件进行了双冗余设计,具备起动控制、调速控制、相继增压控制、...为了解决中国核电应急柴油机控制系统长期依赖进口的问题,自主研制了智能数字控制单元(smart digital control-nuclear,SDC-N)冗余式控制系统。该控制系统分别针对硬件和软件进行了双冗余设计,具备起动控制、调速控制、相继增压控制、故障诊断及冗余切换控制等功能。在核电站应急柴油机上进行了调速、冗余切换等试验验证,在硬件在环测试平台上进行了极端的故障切换试验验证。试验结果表明调速时转速波动率小于±1%,冗余切换时转速波动小于标定转速的7%,冗余切换稳定时间小于2 s。试验结果满足各项功能和指标要求,提高了容错能力和可靠性。展开更多
The operating environment of the diesel engine air path system is complex and may be affected by external random disturbances.Potentially leading to faults.This paper addresses the fault-tolerant control problem of th...The operating environment of the diesel engine air path system is complex and may be affected by external random disturbances.Potentially leading to faults.This paper addresses the fault-tolerant control problem of the diesel engine air path system,assuming that the system may simultaneously be affected by actuator faults and external random disturbances,a disturbance observer-based sliding mode controller is designed.Through the linear matrix inequality technique for solving observer and controller gains,optimal gain matrices can be obtained,eliminating the manual adjustment process of controller parameters and reducing the chattering phenomenon of the sliding mode surface.Finally,the effectiveness of the proposed method is verified through simulation analysis.展开更多
文摘为了解决中国核电应急柴油机控制系统长期依赖进口的问题,自主研制了智能数字控制单元(smart digital control-nuclear,SDC-N)冗余式控制系统。该控制系统分别针对硬件和软件进行了双冗余设计,具备起动控制、调速控制、相继增压控制、故障诊断及冗余切换控制等功能。在核电站应急柴油机上进行了调速、冗余切换等试验验证,在硬件在环测试平台上进行了极端的故障切换试验验证。试验结果表明调速时转速波动率小于±1%,冗余切换时转速波动小于标定转速的7%,冗余切换稳定时间小于2 s。试验结果满足各项功能和指标要求,提高了容错能力和可靠性。
基金Supported by the National Key R&D Program of China(2021YFB2011300)the National Natural Science Foundation of China(52275044,52205299)+1 种基金the Zhejiang Provincial Natural Science Foundation of China(Z23E050032)the China Postdoctoral Science Foundation(2022M710304).
文摘The operating environment of the diesel engine air path system is complex and may be affected by external random disturbances.Potentially leading to faults.This paper addresses the fault-tolerant control problem of the diesel engine air path system,assuming that the system may simultaneously be affected by actuator faults and external random disturbances,a disturbance observer-based sliding mode controller is designed.Through the linear matrix inequality technique for solving observer and controller gains,optimal gain matrices can be obtained,eliminating the manual adjustment process of controller parameters and reducing the chattering phenomenon of the sliding mode surface.Finally,the effectiveness of the proposed method is verified through simulation analysis.
