热负荷状态下机载无级变速器韧性加工控制  

Ductile Machining Control Technology of Airborne CVT under Thermal load

作　　者：蔡凯武[1] Cai Kaiwu(Huali College Guangdong University of Technology,Guangzhou 511325,China)

机构地区：[1]广东工业大学华立学院,广州511325

出　　处：《电子测量技术》2019年第24期1-5,共5页Electronic Measurement Technology

基　　金：2017年广东省教育厅重点平台及科研项目青年创新人才类项目(自然科学类)(2017KQNCX254);2017年广东省创新强校重点培育学科机械设计制造及其自动化(粤教研函〔2017〕1号)资助。

摘　　要：热负荷状态下机载无级变速器加工容易受到小扰动的影响,导致加工稳定性控制性不好,提出一种基于热载荷参数辨识的热负荷状态下机载无级变速器韧性加工控制技术,采用Lagrange方法建模方法构建热负荷状态下机载无级变速器韧性加工的控制约束参量模型,以韧性加工的线密度、弹性模量等参数的控制变量,采用有限激励源反馈约束控制方法进行机载无级变速器韧性加工的进刀轨迹曲率规划,采用局部线性化技术进行热负荷状态下的韧性加工耦合小扰动抑制,结合非线性动力学控制方法进行热载荷参数辨识,实现机载无级变速器韧性加工控制优化。仿真结果表明,采用该方法进行机载无级变速器韧性加工控制的精度较高,参数辨识能力较好,提高了对工件的加工效率及加工稳定性。The machining of airborne CVT under heat load is easy to be affected by small disturbance, which leads to poor control of machining stability. Based on the identification of thermal load parameters, a kind of ductile machining control technology for airborne CVT under thermal load condition is proposed. A control constraint parameter model for ductile machining of airborne CVT under heat load is constructed by using Lagrange method. The parameters such as linear density and elastic modulus of ductile processing are used to control the model. The feed path curvature planning for ductile machining of airborne CVT is carried out by using the finite excitation source feedback constrained control method, and the local linearization technique is used to suppress the coupled small disturbance in the ductile machining under heat load. Based on nonlinear dynamic control method, thermal load parameter identification is carried out to optimize the ductile machining control of airborne CVT. The simulation results show that this method has higher precision and better parameter identification ability for the ductile machining control of airborne CVT, and improves the machining efficiency and stability of the workpiece.

关 键 词：热负荷 机载无级变速器 韧性加工 控制 

分 类 号：V262[航空宇航科学与技术—航空宇航制造工程]