Generalized fault-tolerance control method for sensor

A fault-tolerant control and sensor technology, applied in the direction of electrical testing/monitoring, can solve the problems of difficult to obtain system status, and achieve the effect of solving difficult to obtain.

Active Publication Date: 2014-07-23
珠海智旋科技有限公司
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Problems solved by technology

[0007] In the above-mentioned patent documents, the design of the control system is mostly based on the state feedback design, however, the system state is sometimes difficult to obtain, so difficulties are encountered in the process of fault-tolerant control

Method used

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  • Generalized fault-tolerance control method for sensor

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Embodiment

[0023] generalized linear system in , , , are the state vector, input vector, and output vector of the system, respectively; is a real matrix of appropriate dimension and satisfies:

[0024] Hypothesis 1 matrix group ( )yes controllable, controllable, i.e.

[0025] ,

[0026] Hypothesis 2 matrix group ( )yes considerable, considerable, i.e.

[0027] ,

[0028] By Assumption 2, the generalized linear system has a full-dimensional state observer

[0029]

[0030] in, is the state estimation vector, is the observer gain matrix.

[0031] The sensor generalized fault-tolerant control method mainly includes the following steps:

[0032] Step 1: Separate the sensor feedback gain matrix from the full-dimensional state observer gain matrix;

[0033] Step 2: If the faulty sensor is strongly functionally redundant, perform step 3, and if the faulty sensor is weakly functionally redundant, perform step 4;

[0034] Step 3: Find a full-d...

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Abstract

The invention belongs to the field of sensor and system control, and discloses a sensor generalized fault-tolerant control method. In the case of sensor failure, solve the problem that the state of the sensor system is not easy to obtain, judge whether the functional redundancy of the faulty sensor is strong or weak, and adjust the full-dimensional state observer gain array to keep the controller state unchanged. The present invention separates the generalized system and designs the feedback gain matrix and the full-dimensional state observer gain matrix respectively. When a sensor failure occurs, the method of adjusting the parameters of the observer gain matrix is ​​used to realize fault tolerance, which solves the problem that the state of the sensor system is not easy to obtain question.

Description

technical field [0001] The invention belongs to the field of sensor and system control, and in particular relates to a sensor generalized fault-tolerant control method. Background technique [0002] Fault tolerance means that the normal operation of the control system is not affected by any real individual failure of the control system. [0003] Now the scale of the control system is getting bigger and bigger, and the structure is more and more complex. The fault-tolerant control system is a theory proposed to avoid the instability of the control system where some components fail. [0004] If the closed-loop control system is still stable and still has ideal characteristics when the actuator, sensor or component fails, the closed-loop control system is called a fault-tolerant control system. [0005] Patent CN 1233061 A discloses a fault-tolerant control system for controlling field devices, including: essentially identical primary control systems and secondary control syst...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
Inventor 陈博滕诣迪张宇戚湧孙瑜方赓朱长林
Owner 珠海智旋科技有限公司
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