基于单神经元复合整定的多余力抑制
来源期刊：中南大学学报(自然科学版)2012年第11期
论文作者：樊泽明 吕利刚
文章页码：4349 - 4354
关键词：电液负载模拟器；多余力；单神经元PID；同步补偿
Key words：electro-hydraulic load simulator; surplus force; single-neuron PID; synchronous compensation
摘 要：分析结构不变性原理与同步补偿的优缺点，建立加载系统的线性化模型，研究系统在干扰状态下的幅频特性，并针对电液负载模拟器位置同步补偿方法自适应能力的不足，提出一种基于单神经元的复合整定方案。该方案利用单神经元整定同步补偿环节中的增益系数，并通过复合算法对单神经元输出进行修正，以弥补整定过程中因系统幅频特性导致的震荡。研究结果表明：该控制方案实现了在不同频率变化下系数的最优整定，多余力被有效抑制。该方案优于传统的前馈补偿方法，整定迅速，且结构简单，自适应能力强，具有实际意义。
Abstract: The relative merits of the structure invariance principle and the synchronous compensation method were analyzed, a linearized model of the loading system was established, and the amplitude-frequency characteristic with interference was studied. Aims at the adaptive defects of the position synchro compensation method on the electro-hydraulic load simulator, a single-neuron compound tuning method was proposed. The single-neuron was used to tune the gain factor in the synchro compensation unit, and the compound algorithm was added to revise the output of the single-neuron for eliminating the oscillation arised from system amplitude-frequency characteristic. The results show that the optimal tuning of the gain factor at different frequency is realized, and the surplus force is inhibited effectively. Compared with the traditional feedforward compensation method, this method tunes fast and has simple structure, good adaptive ability, and practical significance.
樊泽明，吕利刚
(西北工业大学 自动化学院，陕西 西安，710129)
摘 要：分析结构不变性原理与同步补偿的优缺点，建立加载系统的线性化模型，研究系统在干扰状态下的幅频特性，并针对电液负载模拟器位置同步补偿方法自适应能力的不足，提出一种基于单神经元的复合整定方案。该方案利用单神经元整定同步补偿环节中的增益系数，并通过复合算法对单神经元输出进行修正，以弥补整定过程中因系统幅频特性导致的震荡。研究结果表明：该控制方案实现了在不同频率变化下系数的最优整定，多余力被有效抑制。该方案优于传统的前馈补偿方法，整定迅速，且结构简单，自适应能力强，具有实际意义。
关键词：电液负载模拟器；多余力；单神经元PID；同步补偿
FAN Ze-ming, LÜ Li-gang
(School of Automation, Northwestern Polytechnical University, Xi’an 710129, China)
Abstract:The relative merits of the structure invariance principle and the synchronous compensation method were analyzed, a linearized model of the loading system was established, and the amplitude-frequency characteristic with interference was studied. Aims at the adaptive defects of the position synchro compensation method on the electro-hydraulic load simulator, a single-neuron compound tuning method was proposed. The single-neuron was used to tune the gain factor in the synchro compensation unit, and the compound algorithm was added to revise the output of the single-neuron for eliminating the oscillation arised from system amplitude-frequency characteristic. The results show that the optimal tuning of the gain factor at different frequency is realized, and the surplus force is inhibited effectively. Compared with the traditional feedforward compensation method, this method tunes fast and has simple structure, good adaptive ability, and practical significance.
Key words:electro-hydraulic load simulator; surplus force; single-neuron PID; synchronous compensation
