| 摘要 |
PURPOSE:To improve safety by increasing the current of a field coil to a maximum limit when an obstacle is detected and an alarm signal is generated, and automatically braking. CONSTITUTION:A regenerative current control circuit normally so controls as to increase a field coil current if according to an increase in a depressing force W0 of a brake in a range of B0-Bn and to generate a braking force corresponding to the depression quantity of the brake. When an obstacle detection signal is generated, the circuit so controls as to increase the current to a maximum value A. Thus, the braking force increases over a magnitude corresponding to the depression quantity of the brake, thereby performing a maximum braking force. Accordingly, it can so control as to automatically brake according to the detection signal. Thus, its safety can be enhanced. |
