Fuzzy control tests of arc voltage and short-circuit frequency are conducted to improve welding quality.
采用模糊控制技术，实现了电弧电压或短路频率的控制，提高了焊接质量。
The paper studies the hardware of the interface circuit and how to control the sweep fingerprint sensor to complete the task of high quality fingerprint gathering with hardware language VHDL.
重点研究接口电路的硬件组成和如何采用硬件语言VHDL编程控制滑动式指纹传感器以完成高质量的指纹采集工作。
The final analysis proved that a phase-shifting surge SPWM optimal control of the inverter, a simple control circuit, in the phase shift smaller, better quality waveform.
最后分析证明了采用移相调压最优SPWM控制的逆变器，控制电路简单，在移相角较小时，波形质量较好。
A 150a DC TIG welding machine is developed, using specially designed thyristor rectifier and IC control circuit, which is simple, reliable and of high quality.
研制了一种150a直流tig焊机，采用特殊的晶闸管主电路和集成电路控制技术，具有简单、可靠和高性能的特点。
Therefore, modern train control system can affect the quality of transmitted signals and used to ensure traffic safety and improve the daily operational efficiency is a key part of the track circuit.
轨道电路是现代列控系统中能够影响传输信号品质并且用来确保日常行车安全和提升运营效率的关键部分。
The execution of the liquid photoimageable solder mask of the printed circuit board was briefly introduced. The process and its quality control were also illuminated.
本文对印制板液态感光成形阻焊剂的制作进行了简单介绍，对该制程的工艺过程和品质控制进行了较为详细的论述。
Printed circuit board, Solder mask, Flood screen printing, Quality Control.
印制板，阻焊膜，丝网印刷，品质控制。
Printed circuit board, Solder mask, Flood screen printing, Quality Control.
印制板，阻焊膜，丝网印刷，品质控制。
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