| 摘要 |
<p>PURPOSE:To accurately detect the operational condition of a train by a method wherein the judgement of slipping, skidding and unbalance of the train is given successively by performing a digital processing. CONSTITUTION:A control circuit 4 compares the detected output S3 of a voltage and current detector 16, revolution frequency signals FR1 and FR2 of motors 7 and 8, the desired value VL of a stress load detector 3, and the desired value BF of a brake valve 2 in accordance with an operational mode signal FG1 and gives a manipulated variable output S1 to a main circuit 9. A slipping-skidding- unbalance detecting section 15 reads revolution frequency signals FR1 and FR2 at the prescribed time interval, and performs an arithmetical operation to obtain the absolute value FR3 of the differences FR11 and FR12 existing between the above signals and the previous revolution signals, and between the above signals and the signals FR1 and FR2. Also, the detecting section 15 compares the signals FR11, FR12 and FR13 with a slipping constant, a skidding constant, an unbalance constant, and outputs an unbalance signal to a control circuit 4.</p> |
