According to the equivalent circuit model of non-linear load,and using "when load current is periodic function,the integral in a period for absolute value of the difference between the load current and fundamental active current is the least" as detecting principle,a harmonic current detecting method for single-phase active power filter based on iterative algorithm was proposed.
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This paper studies the basic principle of detecting cam based on the Gear Measuring Center, and solves such key problems as cam contour matching, compensation and controlling strategy for the probe.
研究了基于齿轮测量中心检测凸轮的基本原理，并解决了测量过程中凸轮轮廓线拟合、测头控制策略和补偿等问题。
The principle of this method is to standardize the method by which manufacturers may demonstrate that their spark testing is effective in detecting faults in the insulation as specified in clause 9.
这个方法的原则是为了证明哪个制造商所进行的绝缘火花试验是符合第9条规定的标准的。
In this paper are discussed the functions of MC14538 which is used to measure and control the weft yarn of the rapier loom as well as the working principle and maintenance of the detecting plate.
MC 14538可用于剑杆织机纬纱的测控，介绍了它的功能及检测板的工作原理和维护过程。
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