摘要
进行机械传动耦合特性动态测试,提高输出稳定性,提出基于末端载荷质量参数辨识的冲击载荷作用下机械传动耦合特性动态测量方法,构建冲击载荷作用下机械传动的运动学模型,采用载荷质量参数递推辨识方法进行机械传动耦合状态特征提取,建立机械传动耦合的传感信息融合模型,分析冲击载荷的非几何位姿误差,建立复杂的误差反馈模型,采用载荷质量参数递推辨识方法进行机械传动耦合状态特征提取,结合模糊参数识别方法进行冲击载荷作用下机械传动的工况耦合性反馈调节,利用递推子空间方法进行冲击载荷的动态应力评估,采用四面实体单元进行有限元模拟,得到机械传动冲击荷载的作用力矩,根据力学参数评估结果实现机械传动耦合特性动态测量。仿真结果表明,采用该方法进行机械传动耦合特性动态测量的抗干扰性较好,传动速度、加速度和载荷误差变化范围得到有效控制,计算耗时和加工耗时较小,测量精度较高,提高了机械传动的稳定性。
The dynamic test of mechanical transmission coupling characteristics is carried out to improve the output stability. A dynamic measurement method of mechanical transmission coupling characteristics under impact load is proposed based on the identification of end load mass parameters. The kinematic model of mechanical transmission under impact load is constructed. The load mass parameter recurrence identification method is used to extract the coupling state characteristics of mechanical transmission, and the sensing information fusion model of mechanical transmission coupling is established. The non-geometric pose error of impact load is analyzed, and the complex error feedback model is established. The load mass parameter recurrence identification method is used to extract the coupling state characteristics of mechanical transmission, the fuzzy parameter identification method is used to adjust the coupling feedback of mechanical transmission under impact load, the recurrent subspace method is used to evaluate the dynamic stress of impact load, and the finite element simulation is carried out by four-sided solid element. The force moment of mechanical transmission impact load is obtained, and the dynamic measurement of mechanical transmission coupling characteristics is realized according to the evaluation results of mechanical parameters. The simulation results show that the dynamic measurement of mechanical transmission coupling characteristics by this method has good anti-interference, the variation range of transmission speed, acceleration and load error is effectively controlled, the calculation time and machining time are small, the measurement accuracy is high, and the stability of mechanical transmission is improved.
作者
邱洪涛
Qiu Hongtao(Guangzhou Huali Science and Technology Vocational College,Guangzhou 511325,China)
出处
《电子测量技术》
2020年第8期49-53,共5页
Electronic Measurement Technology
关键词
冲击载荷
机械
传动
耦合特性
动态测量
质量参数辨识
impact load
machinery
transmission
coupling characteristics
dynamic measurement
mass parameter identification
作者简介
邱洪涛,本科,讲师,高级技师,主要研究方向为数控加工技术、模具制造技术和机械设计及制造技术。E-mail:170843532@qq.com
