人造金刚石压机低频加热系统（本科）毕业论文设计.docVIP

摘 要 本文针对加热电源控制系统电路进行分析和研究，介绍了一种由单片机控制的PWM信号数字触发电路，设计利用单片机的接口电路以及相应的控制程序来实现频率以及电源电压的调节功能。 首先了解金刚石压机和单片机的研究背景以及发展前景，对设计要求的概念进行理解，为设计打下基石。然后根据设计要求对实现方案进行选择论证，通过各种方案的电路图，功能以及输出波形的比较分析确定设计方案。接下来是系统的硬件设计,对总体框架进行构造，电源经过整流滤波然后进行降压送入可控硅作为调节对象，然后利用单片机输出PWM控制信号经过驱动电路控制可控硅的开关达到调压的目的，改变单片机内部程序调节PWM输出周期从而改变输出频率，再详细的介绍了各模块的电路原理以及相互的关系，对设计中使用的各种芯片所运用的功能进行阐述。接着是软件设计，先介绍PWM控制技术的原理，阐述软件程序的设计流程。最后是系统的调试及结论，利用仿真软件进行仿真实验及对实物进行调试得到最后的结果 通过仿真实验和实物调试的结果表明方案是可行的，该低频加热电源控制系统利用PWM控制技术进行可控硅调压使资源得到更合理的利用，控制更简单智能，频率的改变提高了电压的利用率，该低频加热控制系统体积小，操作简单，频率和电压的可调让加热系统更效率。 关键词：PWM；AVR单片机；可控硅；整流滤波；数码显示 Abstract This power control system for the heating circuit analysis and research, presents a PWM signal from the microcomputer controlled digital trigger circuit design using microcontroller interface circuit and the corresponding control program to achieve frequency and voltage regulation functions.  Diamond Press and SCM first understand the background and prospects of research on understanding the concept of design requirements for the design of laying the cornerstone. Then according to design requirements to choose the achievement of the program demonstrated, through various programs of circuit, functional and comparative analysis to determine the output waveform design. Followed by hardware design, the overall framework of the structure, power through the rectifier and then proceed to step-down into the silicon as the adjustment object, then use the output PWM control signal single chip driver circuit through the switch to control the thyristor voltage regulator The purpose of regulating internal procedures to change the microcontroller PWM output cycle to change the output frequency, then a detailed description of the various modules of the circuit and to each other on the design of chips used in a variety of functions by the use of elaborate. Followed by software design, first introduced the principle of PWM control techniques, elaborated software design process. Finally, system debugging and conclu