共查询到18条相似文献，搜索用时 265 毫秒
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任艳焱 《赤峰学院学报(自然科学版)》2010,26(5):17-18
为了解决传统的解耦PID协调控制的输出有超调、振荡等缺点,本文采用了自抗扰控制技术应用于多输入-多输出系统的解耦控制方法．重点介绍了自抗扰控制技术应用于多输入-多输出系统的原理和进行了MATLAB／SIMULINK的仿真．通过仿真实验表明：ADRC控制的具有较强跟随性,抗干扰性等特点,能够很好的解耦． 相似文献
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针对孵化控制系统中的氧气浓度控制问题，采用了一种智能控制方法-模糊控制．同时提出了温度、湿度和氧气浓度之间的解耦方法-间接模糊解耦．实际运行表明此方法简单、有效。 相似文献
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感应电动机是一个多变量、强耦合、非线性的控制对象。微分几何理论是目前分析非线性系统的一种很有效的数学工具。文章介绍了应用微分几何理论对感应电机转速和磁链进行解耦控制的方法,并对解耦控制系统进行了仿真,仿真结果验证了理论分析的正确性。 相似文献
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针对特定碳粉燃烧器中设定温区不同温度值难以采用常规控制算法解决的问题,提出了利用燃烧室不同位置测量温度作为输入,碳粉送进机构以及进气量控制为输出,基于多变量控制系统的特点建立了BP神经网络数学模型,利用PID神经网络控制建立系统的解耦模型,以不同热区温度设定值和燃烧器温度值为解耦模型输入参量,将系统解耦模型的输出作为BP神经网络控制系统的输入值,对燃烧过程进行控制,仿真结果表明该方法具有较好的控制特性. 相似文献
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磁悬浮开关磁阻电机是一个具有强耦合、非线性、多变量的复杂系统,为更有效地对其进行解耦控制,提出了一种基于逆系统方法的磁悬浮开关磁阻电机悬浮系统的解耦设计,建立了磁悬浮开关磁阻电机悬浮系统的状态方程,并对解耦系统的性能进行了仿真比较,结果表明,通过逆系统解耦,磁悬浮开关磁阻电机悬浮系统在径向两个垂直自由度上有效实现了解耦和独立控制。 相似文献
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《赤峰学院学报(自然科学版)》2021,(9)
为了模仿鸟类扑翼运动,提高扑翼机构两侧运动支链的运动对称性,进而为增强扑翼飞行器扑翼飞行的稳定性设计了一种空间斜曲柄摇杆扑翼机结构。本文通过构件几何关系建立了空间曲柄摇杆机构的运动学模型,在多体运动软件ADMAS中建立了扑翼机构仿真分析模型,对运动学模型分析进行了验证。应用udf方法对模型进行动力学分析,分析了扑翼在一个周期内的气动力特性以及速度。结论表明,设计的扑翼机的扑翼极限角度为30°,扑翼机构最大尺寸为88mm,达到扑翼机的微型、对称的要求。应用udf方法,动力学仿真在扑翼频率为4Hz,来流速度7m/s条件下进行。结合气动力以及运动学证明了空间斜曲柄摇杆设计提高运动的对称性,并有利于飞行的稳定性,进而提高了扑翼机整体的气动布局。 相似文献
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肥胖已成为社会公共健康问题．随着细胞与分子生物学技术的发展和应用，c出基因、瘦素、瘦素受体及瘦素作用机制，解耦联蛋白分子及其解耦联作用机理，抵抗素基因、抵抗素分子及抵抗素的生物学效应等方面取得了重要进展，为运动减肥提供了新的科学理论依据． 相似文献
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《实验室研究与探索》2016,(7)
为了满足自动化大作业空间的生产需求,提出了一种面向大型工件加工(如机翼铆接)和大作业空间的工业机器人概念——8-UPS并联机器人。提出了8-UPS并联机器人整体及支链构型,支链中低副等价支链的巧妙配置确保了机器人的步行功能,通过逆运动学模型求解了驱动杆长变化,同时基于三维搜索法,用Matlab求解了并联机构加工状态下的工作空间,并利用姿态工作空间分析了并联机构杆长对工作空间的影响。研究发现,工作空间的截面积沿z轴方向是先增大后减小,空洞则逐渐消失,当z=2 700 mm时,动平台工作空间的面积达到最大值;随着最小杆长的增加,转动中心在垂直空间的范围逐渐增大,这样可以保证并联机器人有足够的加工空间。 相似文献
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Forward position analysis is one of the importantand difficult issues in the kinematic analysis of paral-lel manipulators and has been extensively investiga-ted[1—3]. Most of the approaches for solving forwardposition problems of parallel manipulators with six de-grees of freedom (6-DOF), the Stewart platform forinstance, can be classified into two categories, i.e.closed-form analytical method using polynomial ap-proach and numerical method using iterative algo-rithm. Although the polynomial… 相似文献
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集中供热系统热网有着多输入、多输出、非线性、时变性、强耦合的特点,智能解耦控制算法是解决热网流量控制的有效方法。文章讨论了神经网络解耦控制策略,设计了基于非线性、多变量的神经网络解耦控制器。应用于实验室热网控制的结果表明,该控制算法有明显的控制效果,能实现稳定供热和均匀供热的整体目标。 相似文献
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Architecture singularity of a parallel mechanism with five degrees of freedom (DOF) is analyzed. Such mechanism consists of a movable platform connected to the base by five active limbs. Four of them are identical 6-DOF limbs and the last one has the same DOF as the specified DOF of the movable platform. Based on the kinematics analysis, two categories of architecture singularities for such mechanism are proposed. Then the sufficient condition for each singularity is researched. Results show that the mechanism is singular when it employs each category of the proposed architecture, provided that it satisfies the corresponding sufficient condition. It can be concluded that the proposed two categories of architecture singularities should be avoided with the following dimensional synthesis of such mechanism. 相似文献
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Architecture singularity of a parallel mechanism with five degrees of freedom (DOF) is analyzed. Such mechanism consists of a movable platform connected to the base by five active limbs. Four of them are identical 6-DOF limbs and the last one has the same DOF as the specified DOF of the movable platform. Based on the kinematics analysis, two categories of architecture singularities for such mechanism are proposed. Then the sufficient condition for each singularity is researched. Results show that the mechanism is singular when it employs each category of the proposed architecture, provided that it satisfies the corresponding sufficient condition. It can be concluded that the proposed two categories of architecture singularities should be avoided with the following dimension-al synthesis of such mechanism. 相似文献
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吴洁 《唐山师范学院学报》2009,31(2):83-86
针对影响焦炉集气管压力的主要参数进行了研究,运用机理建模法建立了控制系统的数学模型;并应用前馈补偿法进行解耦,构建阀门间的影响关系模型,实现集气管压力的自动控制． 相似文献
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Genetic optimization algorithm of PID decoupling control for VAV air-conditioning system 总被引：1，自引：0，他引：1
Variable-air-volume (VAV) air-conditioning system is a multi-variable system and has multi coupling control loops. While all
of the control loops are working together, they interfere and influence each other. A multivariable decoupling PID controller
is designed for VAV air-conditioning system. Diagonal matrix decoupling method is employed to eliminate the coupling between
the loop of supply air temperature and that of thermal-space air temperature. The PID controller parameters are optimized
by means of an improved genetic algorithm in floating point representations to obtain better performance. The population in
the improved genetic algorithm mutates before crossover, which is helpful for the convergence. Additionally the micro mutation
algorithm is proposed and applied to improve the convergence during the later evolution. To search the best parameters, the
optimized parameters ranges should be amplified 10 times the initial ideal parameters. The simulation and experiment results
show that the decoupling control system is effective and feasible. The method can overcome the strong coupling feature of
the system and has shorter governing time and less over-shoot than non-optimization PID control. 相似文献
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Luo Yi Qian Jinwu Shen Yaozong Gong Zhenbang 《上海大学学报(英文版)》1998,2(1):49-53
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In order to compensate for the limitation of conventional XY table used in semiconductor integrated circuits(IC) packaging and improve its speed and accuracy, a voice coil actuator (VCA) direct-drive high-speed and precision positioning XY table used in wire bonder was proposed. Also, a novel flexible decoupling mechanism was used in the positioning table, and the small moving mass enabled the positioning table to move at high speed and precision. XY table deformation interference caused by assembly error and instant interference generated by dynamic load moving with high speed and acceleration can be eliminated through the flexible decoupling mechanism. Considering the positioning table as lumped mass spring system,the dynamic equations of the mechanical system and the VCA were built according to the Newton mechanics principle and electromagnetic theory. Then the electromechanical coupling control model of the system was created through Laplace transform. Based on displacement PID controller, the loop-locked controlling algorithm of the positioning system was investigated. The dynamic control algorithm effectively improved the system dynamic performance. The precision test of the prototype machine was carried out, and the results validated the correctness of the model and the theory. Compared with traditional XY table, the table has higher speed, acceleration and positioning accuracy. 相似文献