梳棉包针布机是瑞士格拉夫(GRAF)公司制造,它利用改变频率方法,达到电机转速变化的目的。该设备的特点是在低速之下有足够大的转矩,调速范围宽、主回路比较简单、装置体积小等。 该装置设有下列几个部分:①速度设定器;②速度控制电路;③电压频率变换器;④三相脉冲引导电路;⑤驱动器;⑥功率级;⑦转矩控制器;⑧电流限制器;⑨其它。上列各部分的方块图示于图1。 The Carding Cloth Carding Machine is manufactured by GRAF, a Swiss company that uses frequency-changing methods to achieve changes in motor speed. The device is characterized by low enough torque, speed range, the main circuit is relatively simple, small device size. The device is equipped with the following parts: ① speed setter; ② speed control circuit; ③ voltage frequency converter; ④ three-phase pulse guide circuit; ⑤ drive; ⑥ power stage; ⑦ torque controller; ⑧ current limiter ; ⑨ other. The block diagram of each section above is shown in Figure 1.