| 摘要 |
<p>Differential wheel slip control is desirable in a locomotive having wheels driven by a plurality traction motors (26a-26c) which receive power from an engine (16) driven generator (18). Wheel slip control in known systems involves increased cost and complexity resulting from sensors required to determine an actual locomotive or individual traction motor speeds. In the subject invention a microprocessor (10) under software control is used to detect and control differential wheel slip. A difference signal is generated in response to a difference between the highest and lowest individual traction motor currents. A first-order-lag of the actual locomotive speed is calculated and compared to the difference signal. If the compared signals differ by more than a preselected reference, a differential slip condition exists and the generator (18) power is reduced by a preselected magnitude. Generator (18) power is continually reduced until the slip condition is no longer detected.</p> |
