Non-conductive fault reconstruction method of constant tension system

Abstract

The invention discloses a non-conductive fault reconstruction method of a constant tension system. The method comprises the following steps: step 1, augmenting a system state and interference to obtain a new augmentation system; 2, designing a state observer for the augmentation system; 3, deriving an error equation and judging the stability of the error equation; and 4, reconstructing the fault of the motor. According to the method, the discontinuous and non-conductive faults of the motor of the suspension type constant force system can be accurately reconstructed, and the fault condition ismore general; according to the invention, only the fault reconstruction observer needs to be designed after augmentation of the system state and the interference, and augmentation processing does notneed to be carried out on the fault of the motor, so that the dimension of the fault reconstruction observer is lower, the calculation burden can be effectively reduced, and the rapidity and real-timeperformance of fault reconstruction are improved.

Description

technical field [0001] The invention belongs to the technical field of suspension type constant force control, and relates to a non-guided fault reconfiguration method of a constant tension system. Background technique [0002] Since the constant tension control system can provide stable tension output and effectively compensate the vertical displacement of the load to ensure the constant tension of the load during motion, it has an important role in the fields of spacecraft low-gravity simulation, building materials, and metallurgy. application. On the other hand, the constant tension system will inevitably be affected by external disturbances, input noise, device aging and other factors during the long-term working process, which will cause the motor to malfunction and affect the safety and reliability of the system during operation. Sex poses a potential hazard. Therefore, the research on the fault reconstruction method is of great significance for improving the reliabi...

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Problems solved by technology

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a non-conductive fault reconfiguration method of a constant tension system, which solves the problem that the existing constant tension system fault diagnosis method cannot handle the estimation and reconstruction of discontinuous and non-conductive motor faults problem, to achieve accurate estimation of non-guided faults, and reduce the computational burden by reducing the observer dimension, to achieve online fault diagnosis and real-time fault reconstruction for constant tension systems

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