1、毕业设计（论文） 1 变频洗衣机控制系统设计 【摘要】 本文基于 TMS320LF2407A 设计了一种低成本变频洗衣机控制系统， 主要完成以下工 作:首先 ， 在分析洗衣机的工作原理和流程的基础上， 结合全自动变频洗衣机的功能设计了 以 TMS320LF2407A 为核心的变频洗衣机控制系统的总体方案。 其次， 分析变频洗衣机各部分 功能模块的实现原理及设计方法，设计各功能模块，其中包括变频调速模块、故障处理、水 位检测、电流电压检测保护、衣量检测、水温检测、定时操作、暂停、强制停止等模块。并 设计软件功能，实现洗衣机从浸泡到脱水结束的功能设计。最后，分析三相交流电机调速原 理及 SPWM
2、原理，利用 TMS320LF2407A 内嵌的 PWM 波形产生模块采用直接面积等效的方法实 现了正弦脉冲宽度调制，控制电动机变频调速。 【关键词】TMS320LF2407A;变频洗衣机;变频调速;SPWM A Design for Frequency Washing Machine Control System 【Abstract】This thesis is based on TMS320LF2407A designed a low-cost frequency washing machine control system, it complete the following work:
3、Firstly, based on the analysis of the principle and work processes of washing machine, combine with the function of automatic frequency washing machine designed a frequency washing machine control systems overall program which be based on the core TMS320LF2407A.Secondly, this thesis analyses the pri
4、nciple and the design of each module of the frequency washing machine and devise it. Including the design of frequency control module, fault handling, water testing, current and voltage detection protection, clothing weight detection, regular operations, suspended, forced to stop module and so on,and devise the software programming, achieve the function of the frequency washing machine from marinate to dry. Finally, analyses the principles of speed control of three-phase AC motor and SPWM, used
