1、

Outer loop is voltage loop which controls base time to assure arc length adjustment quickly in external disturbance through welding voltage feedback to reach arc length stable.

外环电压环通过弧压反馈控制基值时间来稳定弧长,保证电弧在焊接过程中遇到外界干扰能快速进行调节。

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2、

The welding current, arc voltage, preset current, the period and ratio of pulse, base current, down slope time, gas pre and post flow time are sampled, calculated and controlled by microprocessor.

单片机对焊接电流、电弧电压、电流给定、脉冲周期、占空比、基值电流、收弧电流衰减时间、前气和后气时间等焊接参数进行采样、计算和控制。

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3、

The effect of voltage fluctuation on control accuracy of the PLC-based open-loop electric heating system is investigated. The compensation method and program of time parameter correction are stated and the functions of the program are proven.

研究了电压波动对PLC开环电加热系统控制精度的影响,提出时间参数校正的补偿方法和程序,并通机验证了程序的功能。

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