Event-trigger-based output feedback controller of neutral stable saturation system

A technology of event triggering and output feedback, which is applied in program control, computer control, comprehensive factory control, etc., can solve problems such as the design method of output feedback controller for neutral and stable saturated systems that have not yet appeared, so as to alleviate the transmission burden and avoid real-time transmission , The effect of saving communication resources

Active Publication Date: 2019-11-15
TIANJIN UNIV
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Problems solved by technology

[0004] Although there have been a lot of research work on event-triggered control strategies, there...

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  • Event-trigger-based output feedback controller of neutral stable saturation system
  • Event-trigger-based output feedback controller of neutral stable saturation system
  • Event-trigger-based output feedback controller of neutral stable saturation system

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Embodiment Construction

[0043]The controller designed in the present invention is a dynamic output feedback controller based on an observer, and the trigger strategy adopted is a static event trigger control based on an absolute sampling error. The state sampling of the observer and the update of the control action are carried out when the event triggering condition is met, thereby ensuring the global asymptotically stable performance of the closed-loop output saturation system. Since the control signal is not transmitted interactively in real time, this will avoid network communication congestion, thereby alleviating the computational burden of the controller and reducing the update frequency of the actuator.

[0044] In order to reduce the number of signal sampling and transmission, effectively save network resources and alleviate network transmission burden, the present invention designs the output feedback controller of the neutral stable saturated system based on the event trigger mechanism to en...

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Abstract

The invention relates to an event-trigger-based output feedback controller of a neutral stable saturation system. The design method comprises: establishing a model for a neutral stable linear system with output saturation characteristics; designing an output feedback control based on a state observer; determining a sampling time; providing models of an observer system and an observation error system under the event trigger action; providing stability conditions of the system; and providing a minimum time interval for event triggering to avoid the Zeno phenomenon in the control process.

Description

technical field [0001] The invention belongs to the field of controller design, and specifically relates to a method for designing a static event triggering strategy. The triggering strategy is used to determine the transmission of control functions, which can effectively alleviate the network transmission burden while ensuring the global asymptotic stability of the closed-loop system. Background technique [0002] In the actual control system, saturation phenomenon is ubiquitous. For example, in feedback control, saturation of the control input and measurement output may occur due to limitations in the operating range and measurement range. In the process of controller design, if these saturation phenomena are not considered, it will affect the overall control performance of the system, and even make the closed-loop system unstable and unpredictable serious consequences. Compared with input saturation, output saturation has the following characteristics: 1) The occurrence ...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257Y02P90/02
Inventor 左志强谢鹏飞王一晶
Owner TIANJIN UNIV
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