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| 摘要: |
| 脉宽调制(PWM)控制方法用于过程控制领域时,由于通过三角波构造PWM控制器不够准确,且三角波参数设置较为复杂,因此提出了利用S函数描述PWM控制算法,通过M文件编写的S函数完全是算法的再现,且生成的S函数模块如Simulink标准模块.结合Matlab中的Simulink工具箱对PWM控制系统进行建模,并针对一个一阶系统进行仿真.通过比较说明,用S函数实现的PWM控制器有着准确性高、建模简单等优点. |
| 关键词: S-Function PWM控制 仿真 |
| DOI： |
| 分类号:TP391.9 |
| 基金项目: |
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| Simulation of PWM control system based on S-Function |
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HAO Ji-fei XING Qing-qing ZHANG Lin
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| Abstract: |
| When PWM(Pulse-Width-Modulation) control is used in process control field,the PWM controller constructed with triangular wave is not very precise and the setting of triangular wave parameters is very complicated.S-Function is proposed to describe the control algorithm of PWM and its M file clearly represents the algorithm.The generated S-Function module is as the standard Simulink modules.With Simulink toolbox of Matlab,the PWM control system is modeled and a first-order lag process is simulated.Results show that the PWM controller of S-Function has higher accuracy while its modeling is simple. |
| Key words: S - Function pulse- width - modulation control simulation |
