常规的转角自适应控制方法未能与同步电机的实际运行数据精准结合，导致实际控制中精度不足，因此提出基于关联规则与PLC设计的同步电机高精度转角自适应控制方法。计算同步电机的增益效率，将结果加权处理，得到同步电机转角理想传动比的计算方法。建立关联数据库，基于关联规则优化转角控制增益系数。以适应性系数判断算法终止条件，建立自适应模型结构，得到同步电机中的转角质心偏离距离，设计转角模糊自适应算法。在对比试验中，试验组中适应性系数均值为0.48/0.92 μm，3个对照组的均值分别为0.27/0.82、0.42/0.57、0.26/0.86 μm。通过试验数据可知,基于关联规则与PLC的同步电机高精度转角自适应控制方法比常规算法更适应同步电机的实际运行，具备更高的精度控制效果。

The conventional angle adaptive control methods are not accurately combined with the actual operation data of synchronous motor, which leads to the lack of accuracy in the actual control. Therefore, a high-precision angle adaptive control method of synchronous motor based on association rules and PLC is proposed. The gain efficiency of synchronous motor is calculated, and the results are weighted to get the calculation method of ideal transmission ratio of synchronous motor angle. An association database is established to optimize the angle control gain coefficient based on association rules. The end condition of the algorithm is judged by the adaptability coefficient, the adaptive model structure is established, the angular centroid deviation distance of synchronous motor is obtained, and the angular fuzzy adaptive algorithm is designed. In the comparative experiment, the mean value of adaptability coefficient in the experimental group is 0.48/0.92 mm, and the mean values of the three control groups are 0.27/0.82, 0.42/0.57 and 0.26/0.86 mm, respectively. The experimental data shows that, compared with the conventional algorithm, the high-precision angle adaptive control method of synchronous motor based on association rules and PLC is more suitable for the actual operation of synchronous motor, and has higher precision control effect.