【作者】 辛苗；

【导师】 欧阳斌林；

【作者基本信息】 东北农业大学 ， 农业电气化与自动化， 2013， 硕士

【摘要】 电感在当今电子及电器领域中，起着非常重要的作用。与电阻、电容合称三大基础元件。尤其在DCDC、UPS等领域中，更是起着关键性作用。因此，电感感值的测量也就显得尤为重要。目前普遍使用的有电桥法等方式，设备体积大，造价高。本文提出了一种新型的电感测量方式，并根据其原理，又衍生出了一种新型的PWM信号发生器。PWM信号发生器现在被广泛应用于电机控制，开关电源等领域。目前PWM信号的产生方法主要有数字法和模拟法。数字方法需要使用软件进行控制，稳定性及灵活性差。模拟法可以直接利用模拟信号对PWM进行在线调制，但是传统的模拟法采用三角波比较法产生，电路相对复杂。在本文中我们提出基于开关电感的新型PWM信号发生器。电路简单，成本低。本文主要内容如下：1.对电感测量及PWM信号发生器国内外形式和发展进行分析。2.阐述开关式电感值测量方法的原理。3.阐述开关电感法产生PWM的原理。4.进行方案设计及实现。5.对数据进行分析和处理。6.对本文进行总结。通过对实验电路的设计、实现及数据的处理和分析，我们最终得到了效果理想的电感测量方法及新型的PWM信号发生器。更多还原

【Abstract】 Nowadays, inductor plays a very important role in electronic and electrical field. And with theresistor, capacitor, it is known as the three basic elements. Especially in DCDC, UPS and othersimilar fields, it plays a key role. Therefore, measuring the inductance is particularly important.The bridge method is widespread used in current, but it has a large volume and high cost. Thispaper presents a novel inductance measurement method, and according to its principle, we deriveda new PWM signal generator.The PWM signal generator is widely used in the field of motor control, switching powersupply etc.. At present the main methods of generating PWM are digital method and analoguemethod. Digital method requires software to control, so its stability and flexibility are poor.Analogue method can directly online modulation of the PWM with analog signals, but thetraditional analogue method adopts triangle wave calculation method, circuit is relatively complex.In this paper we propose a new PWM signal generator based on the switched inductor. The circuitis simple, low cost.The main contents of this paper are as follows:1. Analysis was conducted in1on the inductance measurement and PWM signal generator athome and abroad in the form and development.2. This paper describes the principle of measure inductance with switched inductor method.3. The principle of generate PWM with the switched inductor method.4. The design and implementation.5. The data analysis and processing.6. The paper summarized.Through designing and actualizing of the experimental circuit, processing and analyzing ofdata, we finally get the inductance measurement method is effective and the PWM signal generatormodel.更多还原