目的 提高FDM型3D打印机打印产品的精度及表面质量。方法 针对FDM型3D打印机喷头温度控制具有的非线性特点，利用模糊规则对PID增量参数实时在线校正，设计基于模糊PID算法的喷头温度控制系统，并将其与传统PID控制器仿真对比。结果 模糊PID控制器较传统PID控制器超调量小、达到稳定时间短、鲁棒性强，能够有效地提高温度控制系统的稳定性和控制精度。结论 模糊PID控制能够提高FDM型3D打印机喷头温度控制精度，从而提高了打印产品的精度和表面质量。

The work aims to improve the precision and surface quality of FDM type 3D printer’s printing products. For the temperature control of FDM type 3D printer nozzle featured by the nonlinearity, the PID increment parameter was corrected online for real time with the fuzzy rules. The nozzle temperature control system based on the fuzzy PID algorithm was designed and compared with the simulation of traditional PID controller. Compared with the traditional PID controller, the fuzzy PID controller characterized by small overshoot, short settling time and strong robustness could effectively improve the stability and control precision of temperature control system. The fuzzy PID control can improve the temperature control precision of the FDM type 3D printer nozzle, so as to improve the precision and surface quality of the printing products.