In order to make more effective control of universal power quality controllers (UPQC), an outer loop model for the voltage loop in a three-phase three-wire UPQC is proposed in the paper.
为了对通用电能质量控制器直流侧电压进行更为有效的控制，提出一种用于三相三线通用电能质量控制器(UPQC)直流侧电压控制的外环模型。
A DC voltage outer loop control for power balance and PI correction and an ac current inner loop control for feedback are designed to ensure the current quality and stabilize the DC voltage.
通过直流电压外环的功率平衡控制及比例积分校正，配合内环并网电流反馈控制，使并网逆变器在保持并网电流质量的同时更好地控制直流电压。
For digitized AC servo system, it needs software to support it's closed-loop control. Its control quality is decided by the program of control computation directly.
数字化的交流伺服系统是靠软件完成控制计算来支持闭环控制的，它的控制计算程序直接决定了系统的控制质量。
Theoretical analysis and experimental results verify that the dual closed loop repetitive control based inverter has high output energy quality and low THD of grid-connected current.
理论分析和实验表明，基于双闭环重复控制的并网逆变器具有较高的输出电能质量和较低的并网电流谐波畸变率。
The control system is composed of the engine control automatic shifting control, torque converter lockup closed-loop control, and shift quality control etc.
控制系统是由发动机控制、自动换挡控制掖力变矩器闭锁闭环控制换挡品质控制等部分组成。
Due to changing welding condition caused by interference in TIG welding process, to improve the sensors and its control is two ways to promote accuracy of closed-loop control of welding quality.
对于焊接过程中常出现各种干扰，焊接条件时有变化的TIG自动焊而言，改进传感方法和控制技术是提高焊缝质量闭环控制系统控制效果的两大途径。
TPY3 series speed-adjusting system can realize closed loop control to speed of traction machine, the stability of line speed is increased, so production efficiency and product quality are improved.
用TPY3系列调速器对牵引机的速度进行闭环控制，提高线速度的稳定性，从而提高生产效率和产品质量。
First, the management requirements and characteristics of the quality assurance process are analyzed based on China's guideline for the closed loop control of aerospace products.
首先以中国航天行业标准中质量归零管理要求为基础，对维修保障中质量问题处理的业务特点进行了分析；
Simulation results indicate that the clutch engaging speed can be accurately controlled by using DC servo motor dual closed loop control system. The start quality of Vehicle was improved.
结果表明：直流伺服电机驱动离合器，能很好地控制离合器的结合速度，提高车辆起步品质。
The feed-forward block and two close-loop control methods effectively guarantee the calorific value adjusting quality of the burning gas supplying system.
系统采用前馈和双闭环的调整方法，有效地保障了池炉燃气供应系统良好的热值调节质量。
The feed-forward block and two close-loop control methods effectively guarantee the calorific value adjusting quality of the burning gas supplying system.
系统采用前馈和双闭环的调整方法，有效地保障了池炉燃气供应系统良好的热值调节质量。
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