【作者】 黄尚青；

【导师】 刘利；

【作者基本信息】 上海交通大学 ， 机械电子工程， 2009， 硕士

【摘要】 永磁交流伺服系统广泛应用于消费品市场和工业现场中,而对于如家电、工业植针机等成本要求较高的产品,迫切需要开发高性能价格比的伺服系统。本课题来源于“植针机自动化改造”项目。本文首先分析了原植针机系统结构及原理。根据“安全、可靠、简便、先进”的设计原则,结合植针机自身特点设计了整个系统自动化控制方案。主要完成了:1)传动机构,定位机构的机械设计;2)基于植针机快速进给、精度较高的性能要求,选用台达ASDA-A系列750W伺服电机建立植针机伺服控制系统,基于台达DVP-SV型PLC实现系统功能。然后,本文推导了永磁同步电动机相关公式,建立了数学模型。在MATLAB/Simulink中建立了基于矢量控制的交流伺服系统电流环、速度环、位置环三环模型,采用工程整定方法整定了台达750W伺服驱动器PID参数,然后对系统性能进行分析。运行结果显示,本方法整定的参数基本满足系统需求,但存在速度超调量大,响应时间较长等不足。接着,本文对二次型最优化准则的三种类型的特点及其对控制系统的影响进行了分析,并基于二次型最优化准则对本项目的交流伺服系统进行优化。分析结果表明ITSE准则最不受限于优化初值的选择,并能得到较好的系统性能,最适于作为本系统优化准则。最后,本文提出了基于相位裕度的PID最优化参数整定方法。根据相位裕度概念推导出参数整定公式,并以此为约束应用两次寻优的方法整定PID参数,优化准则选用ITSE。并将该方法在交流伺服系统中进行应用研究。更多还原

【Abstract】 As servo drives employing permanent magnet synchronous motors are being used for various purposes in consumer products and industry applications. Although their technical advantages are generally acknowledged, researchers are becoming aware of their cost and are exploring the possibility of cost reduction. Especially for industrial sewing machines, a servo control system with low cost but high performance is needed. The research subject is based on the‘industrial sewing machine automation transformation’project.In this paper, it analyze the structure and principles of the industrial sewing machine, primarily the feature and principles of the two-axis feeding. Following the principles of safety, reliability, conveniences and advancement, an overall design of the automation system is combined with the feature of the machine. The transmission and locating mechanism are designed. The ASDA-A 750W servo motor and driver are chosen for the design of the servo system. The function of the system is implemented by DVP-SV PLC.Secondly, the paper deduced the equation related to PMSM, and then built the mathematical model of PMSM. The model of the current loop, speed loop and position loop were built based on Vector Control for PMSM by MATLAB/Simulink. The PID parameter of ASDA-A 750W servo driver were tuned by the project tuning method, furthermore, it analyzed the system performance. The running result revealed that this method could achieve the basic demand of the system, on the other way, it revealed the fault, such as large amount of overshoot and too long response time.Thirdly, the paper analyzed the performance of three kinds of the optimal algorithm based on Quadratic Form. The AC servo system in this project was optimized by three typical optimal algorithm based on Quadratic Form., which were called ISTE, ITSE and ITAE. The running results indicated that ITSE algorithm was the most adaptable to optimize the PID parameters of the AC servo system of PMSM. Because ITSE do not depend on the choose of initial value and make better system performance.Finally, in this paper, the differential regulation is introduced to constitute the high performance speed loop of PMSM and realize the perfect following capacity of high speed variation. The mathematical model of the speed loop of permanent magnet synchronous motor(PMSM)was constructed. The PI parameters were tuned by the method which is commonly used in engineering practice, and then the capability of system was analyzed. The PID parameters were tuned by a new optimization tuning method base on phase margin. The tuning formula was derived from the concept of phase margin. Furthermore, quadratic optimization was used for PID parameters tuning, which was constrained by the tuning formula. Compared with the traditional PM method derived from geometrical graph, it is simple and pellucid.更多还原