ASSEMBLY FOR ESTIMATING THE SERVICE LIFE OF AN ELECTRIC MOTOR
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United States of America Patent
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May 12, 2016
app pub date -
Jun 27, 2014
filing date -
Jun 27, 2014
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Abstract
An electronically commutated motor (32) has, associated with it, a circuit board (36) having arranged thereon a temperature sensor for generating a temperature signal. Provided are: A first arrangement for continuous determination of the prospectively still-available service life of the motor (32); a second arrangement (20, 236) for sensing a first value that is dependent on the temperature signal (33) and that characterizes the temperature (T_S) adjacent the circuit board (36); a third arrangement (240; 244) for sensing a rotation speed (n) of the motor (32); a memory (31) for storing a digital third value (Cr) for the prospectively still available service life of the motor (32); a calculation apparatus (30) which calculates an estimated still-available service life and an output apparatus (83) for the results. A current service life correction value (Δt) is preferably also generated as a function of the electrical power and/or of the current and voltage.
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