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在线性负反馈恒流源的基础上,利用PID调节技术和高性能处理器LPC2124实现数字闭环反馈控制,从而得到高精度恒流源。利用该恒流源为某型压力传感器系统提供了精密测试电源。
On the basis of linear negative feedback constant current source, digital closed-loop feedback control is realized by using PID adjusting technology and high-performance processor LPC2124 to obtain high-precision constant current source. The use of the constant current source for a type of pressure sensor system provides a sophisticated test power.