线性摩擦焊机振动系统幅相控制策略研究

陈虎; 杜随更; 胡弘毅

doi:10.13433/j.cnki.1003-8728.20220267

线性摩擦焊机振动系统幅相控制策略研究

doi: 10.13433/j.cnki.1003-8728.20220267

陈虎^{1, 2,},
杜随更^{1, 2, ,},
胡弘毅^{1, 2}

1.
西北工业大学机电学院航空发动机高性能制造工业和信息化部重点实验室，西安　710072
2.
西北工业大学机电学院航空发动机先进制造技术教育部工程研究中心，西安　710072

基金项目: 国家自然科学基金项目（10477017）

详细信息

作者简介:
陈虎（1998−），硕士研究生，研究方向为机电液一体化，1043314785@qq.com

通讯作者:
杜随更，教授，博士生导师，fwcenter@nwpu.edu.cn

中图分类号: TP23
计量
- 文章访问数: 69
- HTML全文浏览量: 41
- PDF下载量: 14
- 被引次数: 0
出版历程
- 收稿日期: 2022-02-22
- 刊出日期: 2023-11-30

Study on Amplitude and Phase Control Strategy of Vibration System of Linear Friction Welding Machine

CHEN Hu^{1, 2
,},
DU Suigeng^{1, 2
, ,},
HU Hongyi^{1, 2}

1.
Key Laboratory of High Performance Manufacturing for Aero Engine, Ministry of Industry and Information Technology, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
2.
Engineering Research Center of Advanced Manufacturing Technology for Aero Engine, Ministry of Education, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 为保证线性摩擦焊接过程能量输入的稳定性，提高线性摩擦焊机振动系统幅值与相位的控制精度，建立了振动系统目标信号、输入信号与输出信号之间的关系，提出幅相控制策略，设计了幅相控制算法控制器，并采用Simulink建立了系统控制模型，通过模拟仿真，得到了不同焊接参数下的算法输入参数。通过典型参数下的焊接试验，验证了幅相控制的可行性。根据焊接过程参数分析了不同控制方法的控制效果，结果表明采用所设计的幅相控制策略，焊接过程中振动系统的振幅误差为1.2%，相位误差为0.16°。
- 线性摩擦焊机 /
- 振动系统 /
- 幅相控制 /
- Simulink仿真
Abstract: In order to ensure the energy supply stability of welding operation and improve the control accuracy of amplitude and phase of vibration servo system of linear friction welding machine, the relationship between target signal, input signal and output signal was established in this paper. The vibration servo system controller was designed based on amplitude and phase control algorithm, and the system control model was established in Simulink. Through simulation, the algorithm input parameters under different welding parameters were obtained. The feasibility of amplitude and phase control strategy was verified by welding tests under typical parameters. The control effects of different control methods were analyzed according to the welding process parameters. The results showed that the amplitude control error with amplitude and phase control algorithm was 1.2% and the phase control error was 0.16°.
- linear friction welding machine /
- vibration system /
- amplitude and phase control /
- simulink simulation

HTML全文

图 1 LFW250型线性摩擦焊机振动伺服系统原理图

Figure 1. Principles of LFW250 linear friction welding machine's vibration servo system

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图 2 振动伺服系统Simulink子模型

Figure 2. Simulink sub-model of vibration servo system

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图 3 幅相控制策略原理

Figure 3. Principles of amplitude-phase control strategy

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图 4 幅相控制策略的Simulink模型

Figure 4. Simulink model of amplitude-phase control strategy

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图 5 振动伺服系统幅相控制闭环仿真模型

Figure 5. Closed-loop simulation model of amplitude-phase control for vibration servo system

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图 6 目标位移振幅随时间的变化

Figure 6. Variation of target displacement amplitude with time

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图 7 控制参量及振动信号模拟结果

Figure 7. Simulation results of control parametersand vibration signal

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图 8 不同干扰条件及其位移误差值

Figure 8. Different interference conditions and their displacement error values

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图 9 250 kN线性摩擦焊机

Figure 9. 250 kN linear friction welding machine

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图 10 幅相控制空振试验结果

Figure 10. Empty load vibration test results of amplitude-phase controlled process

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图 11 幅相控制焊接过程参数变化

Figure 11. Parameter variation of amplitude-phase controlled welding processes

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图 12 双闭环PID控制焊接过程参数变化

Figure 12. Welding process parameter changes of double closed-loop PID control strategy

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表 1 TC21线性摩擦焊接工艺参数

Table 1. Linear friction welding process parameters of TC21

频率/Hz 振幅/mm 摩擦压力/MPa 摩擦时间/s 顶锻压力/MPa

44 2.6 55 6 55

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表 2 不同控制方法控制效果对比

Table 2. Comparison of control effects of differentcontrol methods

控制方式振幅绝对误差/mm 振幅相对误差/% 相位差/（°）

PID控制 −0.22 8.5 72.57

幅相控制 −0.03 1.2 0.16

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