ABB电磁SB821

SB821

SB821

额定转矩（Rated torque）：指电机在额定电压、额定电流、额定速度下所能输出的大转矩。

额定转速（Rated speed）：指电机在额定电压、额定电流下所能输出的转速。

峰值转矩（Peak torque）：指电机在瞬间能够输出的大转矩，通常用于电机的加速和减速过程中。

峰值电流（Peak current）：指电机在瞬间能够承受的大电流，通常与峰值转矩相对应。

大加速度（Maximum acceleration）：指电机在单位时间内的加速度大值，通常用于电机加速和减速的控制。

零负载转速（No-load speed）：指电机在无负载情况下的转速，通常比额定转速高。

编码器分辨率（Encoder resolution）：指电机的反馈装置（如编码器）每转产生的脉冲数，通常用于闭环控制中检测电机的位置和速度。

功率（Power）：指电机输出的功率，通常以瓦特（W）或马力（HP）表示。

我们在选择伺服电机的时候，都应该关注哪些参数呢？

1、首先，是转速，即一分钟电机多能够转多少圈，单位一般为rpm。目前，常见的伺服电机转速有1000rpm、1500rpm、2000rpm、3000rpm等等。也不是说转速越高就越好，我们需要综合的看，一般转速越高扭矩就越小。

2、然后就是扭矩，承接上面的内容，伺服电机转速越高扭矩就相对来说越小，但这是相对于这台电机自己来说的，比如750W的电机在3000rpm时的扭矩可能仍高于200W电机2500rpm的扭矩。常见的扭矩数值有0.64NM、1.27NM、2.38NM等等。

3、再然后是伺服电机功率，即电机是多少瓦特的。中小型伺服电机的功率可能只有200W或者是400W这样子，而大功率伺服电机有可能超过1000W。在选择时也要看设备的综合参数和自己的时机需求，按照具有性价比的方式买。

4、还有就是伺服电机的基座大小、编码器的类型、转轴的直径等等，这都需要和你的项目做好对比。比如说，你本来需要17位多圈值的编码器就够了，你非要弄一个23位的，这不钱烧的吗？何必呢？

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