item直线模组_线性模组中步进电机与伺服电机有什么区别?

 荣誉资质     |      2019-07-24 10:09

 问:线性模组中伺服电机与交流伺服电机有什么不同?

  答:线性模组是用电机驱动器,能够按制造行业必须配搭伺服电机或交流伺服电机,二者在操纵方法上similar(单脉冲串和方位数据信号),但在性能指标和运用场所上存有着很大的差别。

 a,运作特性不一样:

 线性模组中伺服电机的操纵为开环操纵,起动頻率过高或负荷过大易出現丢步或堵转的phenomenon,终止时转速比过高易出現过冲的问题,因此为确保其线性度,应解决好升、减速难题。伺服电机驱动器系统软件为闭环控制,控制器可立即对电动机伺服电机意见反馈signal开展取样,內部组成部位环和速率环,通常不容易出現伺服电机的丢步或过冲的问题,操纵特性更加reliable。

 b,负载工作能力不一样:

 线性模组中伺服电机通常不具备负载工作能力。交流伺服电机具备极强的负载ability。伺服控制系统它具备速率负载和转距负载工作能力。其较大转距为额定值转距的3倍,可用以摆脱惯性力负荷在起动一瞬间的惯性力矩。伺服电机由于沒有这类负载工作能力,在电机选型时以便摆脱这类inertia扭矩,因此必须选择很大转距的电动机,而设备在一切正常工作中期内又不用那麼大的转距,便出現了扭矩waste的问题。

 c,线性度不一样:

 两相混合式伺服电机步距角通常为3.7°、 1.9°,五相混合式伺服电机步距角general为0.72 °、0.36°。也是某些性能的伺服电机步距角更小。

 d,速率没有响应特性不一样:

 线性模组中伺服电机从静止不动加快到工作中转速比(通常为每分好几百转)必须150~350ms。伺服控制系统的加快performance不错,以康佳MSMA 350W交流伺服电机为例,从静止不动加快到其额定值转速比3500RPM仅需几ms,可用以规定迅速起停的control场所。

 e,高频特点不一样:

 线性模组中伺服电机在低速档最易出現高频震动问题。震动頻率与负荷Happening和控制器特性相关,通常觉得震动頻率为电动机满载起跳頻率的一大半。这类由伺服电机的原理所决策的高频震动问题针对设备的normal运行十分不良影响。

 f,矩频特点不一样:

 线性模组中伺服电机的輸出扭矩随转速比上升而降低,且在较转数时候sharp降低,因此其最大工作中转速比通常在400~700RPM。交流伺服电机为恒扭矩輸出,即在其额定值转速比(通常为3000RPM或3500RPM)之内,都能輸出额定值转距,在额定值转速比左右为恒power輸出。

  左右就是说线性模组中伺服电机与交流伺服电机的差别,期待能协助到您!

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