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1.发明公开公开(公告)号：US20240080325A1
公开(公告)日：2024-03-07
申请号：US17939577
申请日：2022-09-07
IPC分类号： H04L9/40
CPC分类号： H04L63/1416 , H04L63/1425 , H04L63/145 , H04L63/30
摘要： Embodiments described herein provide a design architecture for co-designing a controller and a watermarking signal for a cyber-physical system. During operation, the architecture can determine, in conjunction with each other, respective values of a first set of parameters indicating operations of the controller and a second set of parameters representing the watermarking signal. Here, the watermarking signal is combinable with a control signal from the controller for monitoring an output signal of the cyber-physical system for detecting malicious data at different time instances. Subsequently, the architecture can determine a state manager for determining the states of the cyber-physical system from the monitored output signal based on the first and second sets of parameters. The architecture can also determine a detector capable of identifying presence of an attack from the states of the cyber-physical system at a plurality of time instances using the watermarking signal.
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公开(公告)号：US20230400848A1
公开(公告)日：2023-12-14
申请号：US17879537
申请日：2022-08-02
IPC分类号： G05B23/02
CPC分类号： G05B23/0289 , G05B23/0229
摘要： Embodiments described herein provide a supervisor for fault management at a production system. During operation, the supervisor can obtain a set of sensor readings and a state of the production system. A respective sensor reading is an output of a sensor in the production system. The supervisor can then determine, using an artificial intelligence (AI) model, whether the set of sensor readings accommodates a fault associated with a corresponding sensor. Subsequently, the supervisor can determine an action that mitigates an effect of the fault and modify the set of sensor readings based on the action. Here, the modified set of sensor readings is used by a controller that controls the production system.
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3.发明公开公开(公告)号：US20240211593A1
公开(公告)日：2024-06-27
申请号：US18087477
申请日：2022-12-22
CPC分类号： G06F21/556 , G06F21/6218
摘要： A system and a method for secure control of a physical system are described. During operation, the system can obtain measurement of one or more sensors associated with the physical system. The system then estimates a state of the physical system based on the measurement of the sensors. Subsequently, the system generates a feedback control signal based on the estimated state and generates a watermarking signal based on a stored estimated state of the physical system at a previous time instant. The system then generates a watermarked control signal by combining the feedback control signal and the watermarking signal and applies the watermarked control signal to the physical system to regulate the state of the physical system, thereby facilitating secure control of the physical system.
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公开(公告)号：US11960273B2
公开(公告)日：2024-04-16
申请号：US17879537
申请日：2022-08-02
IPC分类号： G05B23/02
CPC分类号： G05B23/0289 , G05B23/0229
摘要： Embodiments described herein provide a supervisor for fault management at a production system. During operation, the supervisor can obtain a set of sensor readings and a state of the production system. A respective sensor reading is an output of a sensor in the production system. The supervisor can then determine, using an artificial intelligence (AI) model, whether the set of sensor readings accommodates a fault associated with a corresponding sensor. Subsequently, the supervisor can determine an action that mitigates an effect of the fault and modify the set of sensor readings based on the action. Here, the modified set of sensor readings is used by a controller that controls the production system.
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