| 引用本文: | 朱伟,董湘怀,张质良.板料拉深成形液压系统模糊控制建模[J].控制理论与应用,2007,24(1):122~126.[点击复制] |
| ZHU Wei, DONG Xiang-huai, ZHANG Zhi-liang.Modeling of fuzzy control in sheet deepdrawing[J].Control Theory and Technology,2007,24(1):122~126.[点击复制] |
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| 板料拉深成形液压系统模糊控制建模 |
| Modeling of fuzzy control in sheet deepdrawing |
| 摘要点击 1450 全文点击 1318 投稿时间：2005-03-19 修订日期：2006-02-22 |
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| DOI编号 10.7641/j.issn.1000-8152.2007.1.023 |
| 2007,24(1):122-126 |
| 中文关键词 模糊控制 板料拉深成形 液压系统 PID 自适应控制器 MATLAB |
| 英文关键词 fuzzy control sheet deep drawing hydraulic
pressure system adaptive PID controller MATLAB |
| 基金项目 |
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| 中文摘要 |
| 针对板料拉深成形系统中的变压边力液压控制动态性能和稳态精度较差的难题,
建立了一个基于模糊PID 自适应调整的液压模糊控制模型, 并借助 MATLAB
仿真得到了控制参数的优化模糊查询表. 最后结合实际板料拉深成形系统,
选取两种变压边力加载模式进行实时变压边力模糊控制应用效果验证.
应用结果表明: 采用模糊 PID
自适应控制方式可大大改善拉深成形液压控制系统的动态响应性能和稳态精度.
当压边力输入曲线为4吨的阶跃信号,
模糊控制下系统的最大超调量仅为理想设定值的4.25%, 大大小于原来无PID
控制时的21.24%及常规PID 控制下的31.07%,
且达到稳定状态的调节高度也大大缩小, 仅略为5mm 左右,
调节时间略为0.24s; 而当输入为U型变压边力加载曲线时,
系统的最大超调量比原来无PID 控制时下降了约5%,
且达到稳态时的调节高度也缩短了约1mm 左右,
使整个拉深变压边力系统的动态性能和稳态精度得到了有效的提高. |
| 英文摘要 |
| To deal with the undesirable
dynamic response and the low steady-state precision of the hydraulic
control in sheet-deep drawing, a fuzzy control model is built based
on fuzzy adaptive PID adjustment rules. The look-up table for
optimal control parameters is generated from MATLAB Toolbox. Two
load profiles of variable blank holder force (VBHF) in real tests
are applied for testing the real-time effect of VBHF. Experimental
results show that when the input signal is a constant VBHF, the
over-shoot under this fuzzy control of adaptive PID controller is
less than 4.25% of the set-point value, in comparison with the
21.24% with no PID controller and the 31.07% with conventional PID
controller. The regulation height and the regulation time are
reduced to 5mm and 0.24s respectively. When the input signal is a
U mode of VBHF, the over-shoot is decrease by 5% from the value
when no PID is applied, and the regulation height also decreased by
1mm. These demonstrate that the proposed fuzzy model effectively
improves the dynamic response and raises the steady-state precision
of the VBHF system. |
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