FAULT DETECTION SYSTEM AND METHOD FOR ELECTRIC MOTORS AND MODEL BASED FAULT DETECTION DIAGNOSIS METHOD

摘要

The present invention relates to an engine condition monitoring system and a method for monitoring the operating status of an engine (10), which system comprises a single row sensor for measuring operating parameters of the engine (10) and a computer connected to the engine (10). The essence of the system is that the computer includes a model of the motor (10) and tools that use the measured operating parameter signals to solve a semi-linear discrete time-state equation, further computing a residual value of the state calculates and compares the computer to determine whether the motor (10) is running without error, correlates the residual value with an error value if the motor (10) is operating with the indicated error, and then transmits a communication signal for the presence of the error to: preventing otherwise unforeseeable failure of the motor (10), and repeating these steps at intervals during operation of the motor (10). In the method using the system, the values of the multivariate experimental model are compared with the measured values and the resulting residual value is analyzed to determine whether an engine (10) is running without error or with some error that can be determined by comparison. ŕ