ABSTRACT:Objective To identify the acceleration control model of a centrifuge and to carry out the simulation and optimization of the control system. Methods The speed, voltage and current during the running of a centrifuge were measured, and the relationship between the armature current and the speed was fitted at speeding up and speed-hold states. Then the model parameters of load resistance and equivalent inertia were analyzed. The Simulink simulation model of the centrifuge acceleration control system was established. Results The simulation results of the model based on identified parameters were close to the results of the real system test, providing a credible model for the optimization of control system, estimation of various test ability and control error. Conclusion The identification method is feasible and the parameters are correct and the running of centrifuge simulation model is fast and correct, which can be used for the identification and simulation of the centrifuge.%目的：辨识某离心机的加速度控制模型，并开展控制系统仿真和优化。方法实测某离心机运行时的转速、电压、电流等，对保载和加速状态的电流进行拟合，进而分析保载阻力、等效转动惯量等模型参数。建立离心机加速度控制系统Simulink仿真模型，进行仿真试验。结果基于辨识的模型参数进行仿真的结果与真实系统试验的结果很接近，为控制系统优化、各种试验能力和误差预估提供了可信的模型。结论采用的辨识方法可行，辨识的参数正确，离心机仿真模型运行快速正确，可供相关离心机辨识和仿真参考。
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