多系统集成电解加工控制策略与故障诊断方法研究

发布时间：2018-11-09 12:06

【摘要】：为了提高航空发动机整体叶盘、汽车发动机喷油嘴阀体等零件的电解加工精度、可靠性以及工作效率,创建了一种集合机床运动、电解液系统、加工电源、电极振动等多个系统为一体的电解加工集成控制系统,提出了一种基于多系统集成的控制策略与故障诊断方法。该集成控制系统在硬件组成上采用了分布式架构与模块化组建方法,由一个主控制器和多个二级控制器组成。在控制策略上采用了协同控制方法,每个二级控制器完成对各自子系统的控制,同时主控制器对二级子系统进行协同管理,从而实现对电解加工全过程控制。在电解加工故障诊断中,建立了较完善的加工信息采集系统,通过特征提取、加工模式识别等步骤对电解加工过程进行诊断。试验证明,该系统集成度高、响应快、操作方便、工作效率高,故障诊断效果好,可有效预防加工故障对零件及其加工系统造成的损坏,提高了加工可靠性。
[Abstract]:In order to improve the precision, reliability and efficiency of ECM for aeroengine integral vane and automobile engine nozzle valve body, a set of machine tool motion, electrolyte system, power supply, etc. An integrated control system for ECM based on electrode vibration and other systems is presented in this paper. A control strategy and fault diagnosis method based on multi-system integration are proposed. The integrated control system is composed of a master controller and a plurality of secondary controllers. In the control strategy, the cooperative control method is adopted. Each secondary controller controls its own subsystem, and the main controller manages the secondary subsystem collaboratively, thus realizing the control of the whole process of ECM. In the fault diagnosis of ECM, a perfect machining information collection system is established, and the process of ECM is diagnosed by feature extraction, machining pattern recognition and so on. The test results show that the system has the advantages of high integration, fast response, convenient operation, high working efficiency and good fault diagnosis effect. It can effectively prevent the damage caused by machining faults to parts and their machining systems, and improve the reliability of machining.
【作者单位】：盐城工学院机械工程学院;南京航空航天大学机电学院;西安工业大学机电工程学院;
【基金】：陕西省特种加工重点实验室开放基金项目(ZSKJ201410) 航空科学基金项目(2011ZE52055)
【分类号】：TG662

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