来源：http://www.jnmcd.com 发布时间：2019-04-15 浏览：次
1. Heating Principle: All kinds of DC deceleration motors we usually see have iron cores and winding coils inside. The winding has resistance, the power will produce loss, the size of loss is proportional to the square of resistance and current, this is what we often say copper loss, if the current is not a standard DC or sine wave, it will also produce harmonic loss; dead center has hysteresis eddy current effect, in alternating magnetic field will also produce loss, its size is related to data, current, frequency, voltage, this is called iron loss. Copper loss and iron loss will be shown in the way of heating, which affects the efficiency of micro-motors. Micromotors generally pursue positioning accuracy and torque output, with low efficiency, large current, high harmonic components, and the frequency of alternating current changes with speed. Therefore, micromotors generally have heating conditions, and the situation is more serious than ordinary AC micromotors.
2. Reasonable range of heating: The level of heating allowed by DC deceleration motor mainly depends on its internal insulation level. Internal insulation performance will be destroyed at high temperature (above 130 degrees). So as long as the internal temperature does not exceed 130 degrees, the micro speed reducer motor will not damage the ring, while the external temperature will be below 90 degrees. Therefore, its surface temperature is normal at 70 - 80 degrees. Simple methods of temperature measurement can be roughly distinguished by point thermometers: hands can touch more than 1-2 seconds, not more than 60 degrees; hands can only touch, about 70-80 degrees; drops of water rapidly gasifies, then more than 90 degrees.
3. Influences from fever and heating tropics: DC deceleration motor heating will not affect the life of micro-motors, but it is unnecessary for most customers to pay attention to it. But when it is serious, it will bring some negative effects. For example, the variation of tectonic stress and the slight change of internal air gap caused by different local thermal shrinkage coefficients will affect its dynamic response, and the high speed will easily lose its pace. For example, some places do not allow excessive heating of micro-motors, such as medical devices and high-precision testing equipment.
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