前言目前,国内外对一些通用部件(如轴承等),其摩擦力矩的测试方法和仪器巳较完善。但对计数器摩擦力矩的测试问题,尚未很好地解决。特别是在电度表中应用的计数器(又称计度器),其蜗杆蜗轮啮合部位及可动部分由摩擦力矩所引起的误差,在电度表机械误差中,占主要部分。多年沿用的惯性运转法和变差法,测试摩擦力矩的精度低、可靠性差、测试效率低,测试仪器距规格化尚有很大差距。这些都影响计度器质量分析、评定和提 Foreword At present, some common parts (such as bearings, etc.) at home and abroad, the friction torque testing methods and instruments have been more perfect. However, the testing of the counter friction torque has not been well solved. Especially in the use of the meter meter (also known as meter), the worm gear meshing parts and moving parts by the friction torque caused by the error in the meter mechanical error, the main part. For many years, the method of inertial operation and variation, the low precision of the test friction torque, poor reliability, low test efficiency, there is still a big gap between the test equipment and the standardization. These affect the quality analyzer, assessment and mention