| 摘要 |
PURPOSE:To execute a test with high accuracy, by detecting a unallowable speed variation for detecting not only an excessive speed deviation but also a too small speed deviation. CONSTITUTION:A differential gear test controller 6 is subjected to speed control or torque control by a set command S1 of a speed or torque. When a speed is controlled, and when torque is controlled, the left shaft and the right shaft are controlled to N0+ DELTAN and N0-DELTAN, respectively, against the controlled reference rotational frequency N0, and the torque-controlled rotational frequency N0, respectively. The left and right rotational frequencies N1, N2 are outputted from rotation speed detectors 6g, 6h, and in a reference rotational frequency detecting circuit 1, the reference rotational frequency N0 is calculated. N0 and N1 are sent to a left shaft deviation detecting circuit 2, a left shaft speed deviation DELTAN1 is detected, is compared with a speed deviation command value DELTAN by an absolute value amplifier 3, and an absolute value of its error (alpha) is multiplied by a constant K and is outputted. An output of the amplifier 3 is compared with an output of an absolute value amplifier 4 for converting the command value DELTAN to an absolute value, and only in case when the output of the amplifier 3 is larger, a detecting circuit 5 is operated, and a signal showing a unallowable speed deivation is generated. |
