Design and control of the belt-polishing tool system for the blisk finishing process
Design and control of the belt-polishing tool system for the blisk finishing process
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DOI：
10.5194/ms-12-237-2021
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发表时间：
2021-02-26
影响因子：
1.4
通讯作者：
Lu, Lei
中科院分区：
文献类型：
--
作者：
Fan, Cheng;Xue, Caoyang;Lu, Lei
根据轮盘的结构特点，开发了一种新型的轮盘精加工自适应带刀系统。气动伺服系统由气缸、伺服阀和力传感器组成，用于控制抛光力。针对气动系统较强的非线性特性，提出了一种二维模糊比例积分导数（PID）控制器进行气动力控制。该控制器通过误差和错误率对传统PID控制器的比例、积分和微分参数进行实时调整，从而优化气动系统的控制性能。与PID控制相比，模糊PID控制的稳态误差减小0.03 s，超调量减小4%，显示了模糊PID控制算法在非线性系统中的优越性。最后，利用所提出的皮带工具系统进行了叶片样品和实际叶片的抛光实验。结果表明，抛光过程非常稳定，抛光后的粗糙度小于0.4 μ m，证明了所提出的新型带刀系统和模糊PID控制器的有效性。
According to the structural characteristics of the blisk, a new adaptive belt tool system for blisk finishing is developed. The pneumatic servo system, which is composed of the cylinder, the servo valve, and the force sensor, is used to control the polishing force. Due to the strong nonlinearity of the pneumatic system, a two-dimensional fuzzy proportion, integral, derivative (PID) controller is developed for the pneumatic force control. The proposed controller adjusts the proportional, integral, and differential parameters of the traditional PID controller in real time through the error and error rate so as to optimize the control performance of the pneumatic system. Compared with the PID control, the steady-state error of the fuzzy PID control is reduced by 0.03 s and the overshoot is reduced by 4 %, which reveals the superiority of the fuzzy PID control algorithm for the nonlinear system. Finally, the experiments of polishing the blisk sample and the real blisk are carried out by the proposed belt tool system. The results show that the polishing process is very stable and the roughness after polishing is less than 0.4 mu m, which proves the effectiveness of the proposed new belt tool system and the fuzzy PID controller.