| 摘要 |
<p>PURPOSE:To realize an optimum readherence control agreed with a weather state change by controlling a driving current from a current pattern signal designated by a readherence control current pattern corresponding to a weather state. CONSTITUTION:A signal representing a weather state of a district where an electric railcar is traveled is input from a weather state input unit 21 to a memory 20 during its traveling. The memory 20 selects a control parameter on the basis of this signal. After the parameter 22 is selected, a current pattern generator 10 stands by. When an idle/slide detector 17 applies an idle/slide signal to the generator 10 at the time of waiting state, the generator 10 applies a current pattern signal 12 to a comparator 13. Then, the driving current value of a motor 11 is controlled on the basis of the signal 12. Thus, the drive wheels and rails can be rapidly returned to an adhesive state even in any weather state.</p> |
