Method for progressively recognizing load of damaged cable based on strain monitoring process of streamlined annular displacement

• Main Authors: HAN JIAYI, HAN YULIN
• Format: Patent
• Language: English
• Published: 18.11.2015
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention provides a method for progressively recognizing the load of a damaged cable based on the strain monitoring process of the streamlined annular displacement. According to the method, based on the strain monitoring process, whether a mechanical calculation benchmark model of a cable structure needs to be updated or not is determined through monitoring the annular displacement of a bearer, the temperature of the cable structure, the ambient temperature, the variation degree of a load and the damaged degree of a damaged cable. After that, the mechanical calculation benchmark model of the cable structure, with the annular displacement of the bearer, the temperature of the cable structure, the ambient temperature, the variation degree of the load and the damaged degree of the damaged cable being taken into account, is obtained. On the basis of the above model, according to the approximately linear relationships between the current numeric vector of a monitored quantity and the current initial numeric vector of the monitored quantity, the numerical value variation matrix of the monitored quantity with unit damage and the current nominal damage vector of an unknown current nominal damage vector, the health status of a core to-be-evaluated object can be recognized.