| 摘要 |
<p>PURPOSE:To obtain a desired accelerating property, by providing a means capable of changing the current limit value of a current limiting relay in accordance with a notch instruction. CONSTITUTION:A control cylinder CC and a reversing unit Rev are actuated by operating a main controller MC. A cam motor CM is energized in accordance with a notch instruction. A main motor is rotated at prescribed torque to accelerate a vehicle. A current limit value, which depends on the current coils CLC1, CLC2 of a current limiting relay CL, is set at a prescribed value. A third and a fourth lines, to which voltages are applied depending on the instructing position of the main line controller MC, are connected to an auxiliary excitation coil f through resistors R1, R2 respectively. When a third notch, for example, is appointed by the main controller, a voltage is applied to the third line and a current determined by the resistor R1 and a control voltage flows and the auxiliary excitation coil f is energized. At that time, the magnetic flux of the coil f acts differentially with those of the current coils CLC1, CLC2 to change the current limit value.</p> |
