基于DRV595的激光器恒温控制系统

发布时间：2018-06-18 10:12

  本文选题：激光技术 + 温度控制　； 参考：《激光技术》2017年05期

【摘要】：半导体激光器的输出波长和功率随温度变化而变化,为了确保激光器工作性能,须对其进行恒温控制。采用脉冲宽度调制功率驱动器DRV595驱动半导体制冷器的方法,设计了一种双向大电流输出的高精度温度控制系统。在S域对系统进行了建模分析,搭建经典比例-积分-微分控制器,采用桥式采样电阻,纯硬件电路实现,结构简单,省掉了数字控制器的复杂软件编写。在常温试验中取得了±0.03℃的控制精度,DRV595集成脉冲宽度调制和双向MOSFET,输出电流最大为±4A。双向电流驱动半导体热电制冷器,实现了无死区控制。结果表明,脉冲宽度调制方式驱动和低输出级电阻大大降低了功率耗散。该系统工作稳定、功耗低、控制精度较高,具有实用价值。
[Abstract]:The output wavelength and power of semiconductor lasers vary with temperature. In order to ensure the performance of the laser, constant temperature control is necessary. A high precision temperature control system with bidirectional high current output is designed by using the pulse width modulated power driver DRV595 to drive the semiconductor cooler. The system is modeled and analyzed in S domain, and the classical proportional-integral-differential controller is built. The bridge type sampling resistor is adopted. The pure hardware circuit is realized, the structure is simple, and the complicated software of the digital controller is saved. The control accuracy of 卤0.03 鈩，

本文编号：2035117