Control Strategy of Multipoint Jacking System Based on Generalized Predictive Adjacent Coupling Theory

Abstract

Abstract: A control strategy combined generalized predictive control and adjacent coupling synchronization control was proposed for synchronization control of multipoint jacking system. A CARIMA model of multi cylinder electro-hydraulic servo system was established based on multivariable generalized predictive theory, then combining adjacent coupling synchronization control theory, a synchronization error observer was constructed for forecasting synchronization errors. In order to guarantee that the tracking errors and synchronization errors converged to zero asymptomatically in the global range, both of the errors and their corresponding differential components were embedded into the performance index. Experimental results show that this strategy has better performance of tracking and synchronization comparing to master-slave PID control strategy.

Key words: generalized predictive control, adjacent coupling control, synchronization error observer, multi cylinder electro-hydraulic servo system

摘要： 针对多点顶推系统的同步控制问题，提出了一种广义预测相邻耦合同步控制策略。根据多变量广义预测理论，建立了多缸电液伺服系统的CARIMA模型。结合相邻耦合控制理论，构造了同步误差观测器，预测了同步误差。对广义预测控制算法进行了改进，在性能指标中嵌入跟踪误差与同步误差及其差分量，确保同步误差与跟踪误差在全局范围内并渐进收敛于零。实验表明该策略较之主从式PID控制策略，具有更好的跟踪性能和同步性能。

关键词: 广义预测控制, 相邻耦合控制, 同步误差观测器, 多缸电液伺服系统

CLC Number:

TP273

Huang Kang, Gong Miao, Zhong Huayong, Wang Kailai. Control Strategy of Multipoint Jacking System Based on Generalized Predictive Adjacent Coupling Theory[J]. China Mechanical Engineering.

黄康, 巩淼, 钟华勇, 王开来. 基于广义预测相邻耦合理论的多点顶推系统同步控制策略[J]. 中国机械工程.

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