正弦信号发生器的研究.docVIP

学号：1008421063 学号：1008421063 本科毕业论文（设计） (2014届） 正弦信号发生器的研究 院 系 电子信息工程学院 专 业 电子信息工程 姓 名 张* 指导教师 钟** 讲师 2014年4月2014年4 2014年4月 摘 要 随着电子技术的飞跃发展，社会发展步入了信息时代；随着生活水平提高，人们对精神生活的要求也跟着提高，这对电子领域提出了跟更高的要求。所以我们有必要在电子技术的各个领域不断创新、提高。正弦信号发生器广泛地应用于电子电路，自动控制系统，仪表测量校正调试和教学实验等领域。 本文利用仿真软件Proteus，以RC振荡电路、LC振荡电路、石英振荡电路为选频网络，仿真出三种正弦信号发生器的电路，通过仿真结果分析电路参数对正弦信号发生器性能指标的影响。其中研究RC振荡电路中电阻、电容对振荡频率的影响；讨论电位器对 振荡电路输出波形的影响；讨论谐振回路的电容对振荡频率和反馈系数的影响；研究负载电阻对电路输出波形的影响等。 关键词：正弦信号发生器；Proteus；LC振荡电路；RC振荡电路 Abstract With the rapid development of electronic technology, social development has entered the information age; with the improvement of living standards, the requirements on the spiritual life of people has also been increased, which put forward with the higher request to the electronic field. So we need to constantly innovate and improve in all areas of electronic technology. Sinusoidal signal generator is widely used in the field of electronic circuits, automatic control system, instrumentation correction debugging and teaching experiment etc. On this paper, by using the simulation software Proteus, the RC oscillation circuit, LC circuit, crystal oscillation circuit for the frequency selective network, I simulated a circuit of three sinusoidal signal generator. Through the simulation results, I analyzed the influence of circuit parameters on the performance of the sinusoidal signal generator.Among which make a research on the effect of the resistance, capacitance of oscillation frequency in the RC oscillation circuit; discuss the effects of potentiometer to oscillation circuit output waveform; discuss the influence of capacitance in the resonant circuit on the oscillation frequency and the feedback coefficient of load resistance; and study the impact of load resistance on the circuit output waveform,etc. Keywords:?sinusoidal signal generator; ?Proteus; ?LC circuit; ?RC oscillation circuit; 目 录 TOC \o 1-2 \h