考虑温度影响的开关电源稳健性参数设计
发布时间：2019-02-12 21:07
【摘要】：开关电源具有效率高、重量轻、体积小等特点,广泛应用于各类电子系统中。随着电子系统向高可靠、长寿命的方向发展,用户对开关电源的质量与可靠性也出更高的要求。在实际使用中,开关电源不可避免将受到环境(如温度)和自身产品波动(制造噪声)的影响,导致其出现质量不稳定的现象。如能在开关电源设计过程中考虑温度、制造噪声等不确定因素的影响,将有效提升开关电源的稳健性和可靠性。本文以某典型开关电源为研究对象,对考虑温度影响的参数稳健设计方法进行研究,主要内容如下:首先,针对某典型开关电源电路,在Saber中搭建不考虑温度的电路仿真模型,并进行实测验证;同时研究电源主要元器件的温度特性,建立器件温度模型;进而构建考虑温度影响的开关电源仿真模型,并初步分析不同温度下的开关电源输出的波动情况。其次,在传统的田口参数设计方法基础上,提出一种综合考虑制造和温度噪声的参数设计方法。仍以典型开关电源电路为研究对象,通过灵敏度分析筛选得到电路的关键器件参数;之后考虑电路中的制造和温度噪声,构建二维噪声内外表设计方案,仿真获得数据,统计、分析得到优化设计方案,并采用蒙特卡洛模拟验证优化方案。然后,研究考虑温度影响的多目标稳健参数优化方法。通过试验设计构建样本空间,采用输出合格率评估不同温度下的样本空间输出,筛选温度区间内的关键温度点;建立开关电源电路输入变量和输出响应之间的近似模型,为全局寻优快速计算奠定基础;然后建立开关电源多目标稳健优化模型,采用遗传算法进行全局寻优,并利用蒙特卡洛模拟比较优化前后各目标在全温度区间内的分布效果。最后,基于Saber与QT开发电子系统稳健性参数设计软件平台,将本文研究方法进行软件实现。平台将解决Saber参数传递接口问题,并集成建模、分析和设计功能,成为电子系统稳健参数设计的通用平台。某噪声放大电路的应用结果则进一步证明了该软件平台的通用性和有效性。
[Abstract]:Switching power supply is widely used in all kinds of electronic systems because of its high efficiency, light weight and small volume. With the development of electronic system in the direction of high reliability and long life, the quality and reliability of switching power supply are demanded by users. In practical use, the switching power supply will inevitably be affected by the environment (such as temperature) and the fluctuation of its own products (making noise), resulting in the phenomenon of unstable quality. If the influence of temperature, noise and other uncertain factors can be taken into account in the design of switching power supply, the robustness and reliability of switching power supply will be improved effectively. In this paper, a typical switching power supply is taken as the research object to study the parameter robust design method considering the influence of temperature. The main contents are as follows: firstly, a simulation model without temperature is built in Saber for a typical switching power supply circuit. And carry on the actual test verification; At the same time, the temperature characteristics of the main components of the power supply are studied, the device temperature model is established, and the simulation model of the switching power supply considering the influence of temperature is constructed, and the fluctuation of the output of the switching power supply at different temperature is analyzed preliminarily. Secondly, based on the traditional design method of Taguchi parameters, a parameter design method is proposed which considers manufacturing and temperature noise synthetically. Taking the typical switching power supply circuit as the research object, the key device parameters of the circuit are obtained by sensitivity analysis. Then, considering the manufacturing and temperature noise in the circuit, the design scheme of two-dimensional noise interior appearance is constructed, the data of simulation, statistics and analysis are obtained, and the optimization scheme is verified by Monte Carlo simulation. Then, the multi-objective robust parameter optimization method considering the influence of temperature is studied. The sample space is constructed by experimental design and the output qualified rate is used to evaluate the sample space output at different temperatures and to screen the key temperature points in the temperature range. The approximate model between input variable and output response of switching power supply circuit is established, which lays the foundation for fast calculation of global optimization. Then the multi-objective robust optimization model of switching power supply is established and the global optimization is carried out by genetic algorithm. The distribution effect of each target in the whole temperature range before and after optimization is compared by Monte Carlo simulation. Finally, the software platform of robust parameter design of electronic system is developed based on Saber and QT. The platform will solve the problem of Saber parameter transfer interface, and integrate modeling, analysis and design functions, and become a general platform for robust parameter design of electronic system. The application results of a noise amplifier further prove the generality and effectiveness of the software platform.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN86
本文编号：2420787
[Abstract]:Switching power supply is widely used in all kinds of electronic systems because of its high efficiency, light weight and small volume. With the development of electronic system in the direction of high reliability and long life, the quality and reliability of switching power supply are demanded by users. In practical use, the switching power supply will inevitably be affected by the environment (such as temperature) and the fluctuation of its own products (making noise), resulting in the phenomenon of unstable quality. If the influence of temperature, noise and other uncertain factors can be taken into account in the design of switching power supply, the robustness and reliability of switching power supply will be improved effectively. In this paper, a typical switching power supply is taken as the research object to study the parameter robust design method considering the influence of temperature. The main contents are as follows: firstly, a simulation model without temperature is built in Saber for a typical switching power supply circuit. And carry on the actual test verification; At the same time, the temperature characteristics of the main components of the power supply are studied, the device temperature model is established, and the simulation model of the switching power supply considering the influence of temperature is constructed, and the fluctuation of the output of the switching power supply at different temperature is analyzed preliminarily. Secondly, based on the traditional design method of Taguchi parameters, a parameter design method is proposed which considers manufacturing and temperature noise synthetically. Taking the typical switching power supply circuit as the research object, the key device parameters of the circuit are obtained by sensitivity analysis. Then, considering the manufacturing and temperature noise in the circuit, the design scheme of two-dimensional noise interior appearance is constructed, the data of simulation, statistics and analysis are obtained, and the optimization scheme is verified by Monte Carlo simulation. Then, the multi-objective robust parameter optimization method considering the influence of temperature is studied. The sample space is constructed by experimental design and the output qualified rate is used to evaluate the sample space output at different temperatures and to screen the key temperature points in the temperature range. The approximate model between input variable and output response of switching power supply circuit is established, which lays the foundation for fast calculation of global optimization. Then the multi-objective robust optimization model of switching power supply is established and the global optimization is carried out by genetic algorithm. The distribution effect of each target in the whole temperature range before and after optimization is compared by Monte Carlo simulation. Finally, the software platform of robust parameter design of electronic system is developed based on Saber and QT. The platform will solve the problem of Saber parameter transfer interface, and integrate modeling, analysis and design functions, and become a general platform for robust parameter design of electronic system. The application results of a noise amplifier further prove the generality and effectiveness of the software platform.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN86
【参考文献】
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1 胡哲;马骏;赵艳雄;何景武;;基于Python和MATLAB的CAE可视化分析平台的设计开发[A];第24届全国结构工程学术会议论文集（第Ⅰ册）[C];2015年
，本文编号：2420787
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