| 摘要 |
<p>The device has an electrical motor (32) i.e. direct current motor, provided for driving a circular body (5) e.g. roller. A computer controlled slippage brake (34) is attached to the circular body. Brake shoes lie opposite to each other and are attached to a brake pad. The brake shoes are engaged at the circular body. A brake plate (44) is connected with a hub (35) of the circular body via spokes (43). The brake shoes are connected with an electromagnetic coil, which is coupled with a control unit (33). An incremental sensor (36) is connected with a computer control and attached to the body.</p> |
