analog control circuit

基本解释

At first we established an AC small-signal model of welding inverter and designed a digital controller on the basis of analyzing a typic analog welding control circuit.
本文在这部分的研究工作中，首先建立了弧焊逆变电源的交流小信号模型，并对典型的模拟控制电路进行了分析。
In traditional method which uses analog control circuit, some disadvantages such as difficult debugging and aging component, are unavoidable. Digital control method is not mature now.
目前感应加热装置多采用模拟控制电路，模拟电路不可避免的存在调试困难、元件易老化等缺点，感应加热电源的数字控制技术发展尚不成熟。
The analog circuit consists of power-supply modular, signal pickup circuit, analog filter amplifier, gain control circuit, power ground lifting circuit and signal limit circuit of A/D channel.
模拟电路部分包括：电池电源供电模块、信号采集电路、模拟滤波和放大电路、增益调节电路、地电压抬升电路和A/D输入信号限制电路。