预应力张拉偏差耦合同步控制的仿真
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摘要
针对预应力张拉施工过程中张拉设备同步精度低、抗干扰性差,以及液压系统自身的非线性与参数时变性影响同步控制精度等问题,以变频泵控液压系统为基础,结合偏差耦合同步控制策略,提出一种多点同步预应力张拉控制方法。根据该控制方法建立数学模型,并采用模糊PID控制器取代常规PID控制。在MATLAB/Simulink环境下对该控制方法进行仿真研究。结果表明,采用偏差耦合控制策略可以提高系统的同步性,而模糊PID控制在保证多台千斤顶同步张拉的前提下,有效地提高了系统的动态响应与稳态性能。
Aiming at the problems of low synchronization accuracy and poor anti-interference of tensioning equipment in the process of prestressing construction,as well as the influence of nonlinearity and time-varying parameters of hydraulic system on synchronization control accuracy,a multi-point synchronization control method of prestressing tension was proposed based on variable frequency pump-controlled hydraulic system and combined with deviation coupling synchronization control strategy.According to the control method,the mathematical model was established,and the conventional PID control was replaced by the fuzzy PID controller.The control method was simulated in MATLAB/Simulink.The results show that the synchronization of the system can be improved by using the deviation coupling control strategy,while the dynamic response and steady-state performance of the system can be effectively improved by using the fuzzy PID control under the premise of ensuring the synchronous tension of multiple jacks.
Aiming at the problems of low synchronization accuracy and poor anti-interference of tensioning equipment in the process of prestressing construction,as well as the influence of nonlinearity and time-varying parameters of hydraulic system on synchronization control accuracy,a multi-point synchronization control method of prestressing tension was proposed based on variable frequency pump-controlled hydraulic system and combined with deviation coupling synchronization control strategy.According to the control method,the mathematical model was established,and the conventional PID control was replaced by the fuzzy PID controller.The control method was simulated in MATLAB/Simulink.The results show that the synchronization of the system can be improved by using the deviation coupling control strategy,while the dynamic response and steady-state performance of the system can be effectively improved by using the fuzzy PID control under the premise of ensuring the synchronous tension of multiple jacks.
引文
[1]王小波.桥梁预应力张拉精细化施工监控系统研究[D].西安:长安大学,2015.
[2]李式雄.后张法预应力钢绞线张拉和锚固过程分析[J].筑路机械和施工机械化,2015,32(2):69-72,77.
[3]李文峰,廖强,罗斌,等.全自动智能预应力张拉设备液压系统研究与设计[J].公路交通技术,2012(6):68-71.
[4]章建鹏.智能预应力张拉程控系统的研究与设计[D].武汉:华中科技大学,2015.
[5]季明逸,游有鹏.基于偏差耦合法的同步控制策略研究与实践[J].中国制造业信息化,2012,41(21):58-61,66.
[6]李鹏飞,王伟涛,万亚斌.基于相邻偏差耦合的多电机模糊PID同步控制[J].机械设计与研究,2013,29(5):45-48,58.
[7]杨晶,同志学.液压机械手电液比例系统模糊PID控制研究[J].机械科学与技术,2013(6):834-838.
[8]田士强,李孝兵,王辉.预应力张拉数字变频自动控制方法和系统研究[J].公路交通科技,2013(10):252-256.
[9]刘礼华,戴长秋,黄元峰.基于变频技术的泵控缸液压调速系统的模糊PID控制的仿真研究[J].机械与电子,2011(9):69-72.
[10]朱士伟,李宏杰,黄庆学,等.全液压矫直机电液伺服系统控制研究[J].机床与液压,2014,42(23):46-50.
[11]苗新刚,汪苏,韩凌攀,等.基于偏差耦合的多电机单神经元同步控制[J].微电机,2011,44(2):44-47.
[12]曹玲芝,王红卫,李春文,等.基于偏差耦合的起重机起升机构同步控制[J].计算机工程与应用,2008,44(25):233-235.
[13]彭晓燕,刘威,张强.基于改进型偏差耦合结构的多电机同步控制[J].湖南大学学报(自然科学版),2013,40(11):76-83.
[14]吕博,吴云洁.基于模糊自适应PID的伺服系统控制[J].系统仿真学报,2009,21(21):6794-6797.
[2]李式雄.后张法预应力钢绞线张拉和锚固过程分析[J].筑路机械和施工机械化,2015,32(2):69-72,77.
[3]李文峰,廖强,罗斌,等.全自动智能预应力张拉设备液压系统研究与设计[J].公路交通技术,2012(6):68-71.
[4]章建鹏.智能预应力张拉程控系统的研究与设计[D].武汉:华中科技大学,2015.
[5]季明逸,游有鹏.基于偏差耦合法的同步控制策略研究与实践[J].中国制造业信息化,2012,41(21):58-61,66.
[6]李鹏飞,王伟涛,万亚斌.基于相邻偏差耦合的多电机模糊PID同步控制[J].机械设计与研究,2013,29(5):45-48,58.
[7]杨晶,同志学.液压机械手电液比例系统模糊PID控制研究[J].机械科学与技术,2013(6):834-838.
[8]田士强,李孝兵,王辉.预应力张拉数字变频自动控制方法和系统研究[J].公路交通科技,2013(10):252-256.
[9]刘礼华,戴长秋,黄元峰.基于变频技术的泵控缸液压调速系统的模糊PID控制的仿真研究[J].机械与电子,2011(9):69-72.
[10]朱士伟,李宏杰,黄庆学,等.全液压矫直机电液伺服系统控制研究[J].机床与液压,2014,42(23):46-50.
[11]苗新刚,汪苏,韩凌攀,等.基于偏差耦合的多电机单神经元同步控制[J].微电机,2011,44(2):44-47.
[12]曹玲芝,王红卫,李春文,等.基于偏差耦合的起重机起升机构同步控制[J].计算机工程与应用,2008,44(25):233-235.
[13]彭晓燕,刘威,张强.基于改进型偏差耦合结构的多电机同步控制[J].湖南大学学报(自然科学版),2013,40(11):76-83.
[14]吕博,吴云洁.基于模糊自适应PID的伺服系统控制[J].系统仿真学报,2009,21(21):6794-6797.