新闻:民众镇106两相步进马达57HD4402销售部
有关伺服零点开关的问题。
找零的方法有很多种，可根据所要求的精度及实际要求来选择。可以伺服电机自身完成（有些品牌伺服电机有完整的回原点功能），也可通过上位机配合伺服完成，但回原点的原理基本上常见的有以下几种。
一、伺服电机寻找原点时，当碰到原点开关时，马上减速停止，以此点为原点。
二、回原点时直接寻找编码器的Z相信号，当有Z相信号时，马上减速停止。这种回原方法一般只应用在旋转轴，且回原速度不高，精度也不高。
同步带的安装对伺服定位也有很大影响吗。
这个情况，得知道伺服是不是调得很软？常见伺服是用脉冲控制的，那么，位置环的比例增益，速度环比例增益、积分时间常数分别是多少？
位置环比例增益：21rad/s
速度环比例增益：105rad/s
速度环积分时间常数：84ms
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新闻:民众镇106两相步进马达57HD4402销售部
上述因素的影响也因塑料材料的不同，或者其它成型条件如温度、湿度、继续结晶化、成型后的注塑机的变化而不同。由于注塑过程是把塑料从固态(粉料或粒料)向液态(熔体)又向固态(制品)转变的过程。从粒料到熔体，再由熔体到制品，中间要经过温度场、流场以及密度场等的作用。在这些场的共同作用下，不同的塑料(热固性或热塑性、结晶性或非结晶性、增强型或非增强型等)具有不同的聚合物结构形态和流变性能。凡是影响到上述因素必将会影响到塑料制品的物理力学性能、尺寸、形状、精度与外观质量。
新闻:民众镇106两相步进马达57HD4402销售部
行星减速机主要传动结构为:行星轮,太阳轮,外齿圈. 行星减速机因为结构原因,单级减速为3,一般不超过10,常见减速比为:3.4.5.6.8.10,减速机级数一般不超过3,但有部分大减速比定制减速机有4级减速.
相对其他减速机,行星减速机具有高刚性,高精度(单级可做到1分以内),高传动效率(单级在97%-98%),高的扭矩/体积比,终身免维护等特点.
因为这些特点,行星减速机多数是安装在步进电机和伺服电机上,用来降低转速,提升扭矩,匹配惯量.那么我们在用的过程中要注意什么呢？
1.减速机额定输入转速可达到18000rpm(与减速机本身大小有关,减速机越大,额定输入转速越小)以上,工业级行星减速机输出扭矩一般不超过2000nm,特制超大扭矩行星减速机可做到10000nm以上.工作温度一般在-25℃到100℃左右,通过改变润滑脂可改变其工作温度。
新闻:民众镇106两相步进马达57HD4402销售部
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