Method and device for reducing fuzzy region of ratio braking characteristic of sampling value differential motion and electronic equipment

The invention discloses a method for reducing a sampling value differential ratio braking characteristic fuzzy region, and the method comprises the steps: obtaining a current sampling value of each end of a protected element, calculating a sampling value differential current and a sampling value braking current, calculating a phase difference between the sampling value differential current and the sampling value braking current according to the sampling values of two adjacent points, and obtaining a sampling value differential ratio braking characteristic fuzzy region. And determining a fuzzy region of the sampling value differential ratio braking coefficient according to the calculated phase difference. The method is simple in principle, small in calculation amount and easy for engineering realization. 本申请公开一种减小采样值差动比率制动特性模糊区的方法，包括：获取被保护元件各端的电流采样值，计算采样值差流和采样值制动电流，根据相邻两点采样值计算出采样值差流和采样值制动电流的相位差，根据计算得到的相位差确定采样值差动比率制动系数的模糊区。该方法原理简单、计算量小，易于工程实现。