| 摘要 |
A method and system determines probable strength degradation in a tensile support in an elevator system by monitoring an electrical characteristic of the tensile support as a whole, such as the total electrical resistance of the tensile support, that varies as the remaining strength in the tensile support varies. One example system determines a relationship between strength degradation and various physical factors, such as the rate of degradation for a given load ( 102 ), operating environment information for the tensile support ( 104 ), and estimated usage data ( 106 ), to obtain a map of mean degradation ( 100 ). This map of mean degradation ( 100 ) is then used to generate one or more maps linking the strength degradation and electrical characteristic.
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