方型锂电池卷绕系统纠偏控制算法的研究与实现

发布时间：2018-06-19 22:16

本文选题：锂离子电池 + 卷绕机　；参考：《深圳大学》2017年硕士论文

【摘要】：随着锂离子电池使用率不断提高,其市场需求量飞速增涨,因此对锂离子电池的产能和产品质量的要求也不断提升。锂电池电芯卷绕机负责完成锂离子电池芯体卷绕这个关键生产工艺,其工艺质量与锂电池产品品质直接挂钩。国内锂电池卷绕机相关技术起步较晚,主要通过采购引入国外先进设备,价格较高且无自主产权。因此,为提高锂离子电池的生产技术,设计一款性能优异、价格合理的锂电池生产设备,有利于改善现阶段国内锂电产业结构,具有重大的实际意义。本课题从方型锂电池卷绕机纠偏控制这一关键技术着手,通过分析偏移量产生机理,构建多级纠偏控制系统理论模型,根据纠偏控制任务和特点设计控制器硬件和软件,在单级纠偏控制中提出优于传统方法的新纠偏控制方案,并将同步控制策略应用到多级纠偏控制中,最终通过仿真验证纠偏控制效果。首先,对卷绕机纠偏控制系统建模。分析纠偏控制系统结构,介绍偏移量产生的原因,对各纠偏执行机构进行理论建模,最终得出纠偏控制系统的整体模型。其次,为满足纠偏控制系统需求,设计出对应控制器所需的硬件电路及软件,并通过调试实现纠偏控制器各模块功能。再次,针对单级纠偏控制,研究与改进卷绕系统纠偏控制策略。将模糊PID控制运用到单级纠偏控制中,通过分析常规PID控制在纠偏控制中的效果,确定模糊控制规则,运用仿真工具建立理论模型,验证了模糊PID控制在单级纠偏控制中的性能。最后,基于常规多级纠偏控制方法的不足,提出同步纠偏控制策略。通过仿真对比了几种常用同步控制策略在多级纠偏控制系统中的控制效果,选择同步性最好的交叉耦合同步控制方式,在MATLAB/Simulink平台上建立纠偏控制系统模型,通过对比实际多级纠偏控制,验证了同步纠偏控制策略具有更好地控制效果。
[Abstract]:With the increasing utilization rate of lithium-ion batteries, the market demand is increasing rapidly, so the requirements for the production capacity and product quality of lithium-ion batteries are also increasing. Lithium battery coiling machine is responsible for completing the key production process of lithium ion battery core winding, and its process quality is directly linked to the quality of lithium battery products. Domestic lithium battery winding machine technology started late, mainly through the procurement of foreign advanced equipment, high prices and no independent property rights. Therefore, in order to improve the production technology of lithium ion battery, it is of great practical significance to design a lithium battery production equipment with excellent performance and reasonable price. This subject starts with the key technology of rectifying deviation control of square lithium battery winding machine. By analyzing the mechanism of offset generation, the theoretical model of multistage rectifying control system is constructed, and the hardware and software of controller are designed according to the task and characteristics of rectifying control. A new control scheme, which is superior to the traditional method, is put forward in the single-stage error correction control, and the synchronous control strategy is applied to the multi-stage correction control. Finally, the effect of the correction control is verified by simulation. Firstly, the control system of winding machine is modeled. This paper analyzes the structure of rectifying control system, introduces the causes of offset, and models the mechanism of rectifying deviation in theory. Finally, the overall model of rectifying control system is obtained. Secondly, in order to meet the demand of the rectifying control system, the hardware circuit and software of the corresponding controller are designed, and the function of each module of the controller is realized by debugging. Thirdly, the control strategy of winding system is studied and improved for single-stage deviation correction control. The fuzzy pid control is applied to the single-stage rectifying control. By analyzing the effect of the conventional pid control in the rectifying control, the fuzzy control rules are determined, and the theoretical model is established by using the simulation tools. The performance of fuzzy pid control in single stage correction control is verified. Finally, based on the shortcomings of the conventional multilevel error correction control method, a synchronous correction control strategy is proposed. This paper compares the control effect of several common synchronous control strategies in multistage rectifying control system, chooses the best synchronous cross-coupling synchronous control method, and establishes the system model of rectifying control system on MATLAB / Simulink platform. By comparing with the actual multilevel correction control, it is proved that the synchronous correction control strategy has better control effect.
【学位授予单位】：深圳大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273;TM912

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