PWM AC servo motor is normally a nonlinear control object of high order. In this paper it is simplified as a linear object of low order with variable parameters.
PWM交流伺服系统是一个高阶非线性对象，本文把它简化处理为低阶变系数线性对象。
In electronics, a circuit for converting AC voltage to low voltage DC in such a way that the output is regulated to minimize noise and voltage fluctuation.
在电子技术中，把交流电转换成低电压直流电的一种电路。这种电路的输出是经过调整的，使它的噪声及电压波动都很。
When measuring low current, electrostatic shielding (as discussed in Section 2.6.2) is the most common way to reduce noise due to AC interference.
在测量弱电流时，静电屏蔽(如第2.6.2节所讨论)是降低交流干扰引起的噪声的最常用的方法。
However, when the hi terminal of the electrometer is connected to the low impedance power supply, this AC current (I) flows through the electrometer (im), as illustrated in Figure 2-41.
然而，如果静电计的HI端连到电源的低阻端，则该交流电流(i)就流过静电计(IM)，如图2 - 41所示。
The electric brake of AC shaft hoist is an important part on hoisting technics low frequencies power generation brake and power are widely used in the shaft hoist of AC asynchronous drive at present.
交流拖动提升机电气制动是提升工艺中比较重要的一部分，目前交流异步电机拖动的提升机中，广泛应用的制动方式是低频发电制动和动力制动。
In domestic AC interconnected area power grids the low-frequency oscillations still exist due to insufficient damping.
在我国大区交流互联系统中存在着区域间弱阻尼或负阻尼低频振荡问题。
In this paper, the tested parameter outcome of large synchronous machine identified by using the MPIS parameter identifier from low voltage ac steady state test is presented.
本文介绍采用静态交流试验，应用MPIS参数识别器识别大型水轮发电机的参数结果。
The low voltage DC system is one of the most important equipments in converter station, which is closely associated with the safety and stability of DC transmission system and correlative AC system.
低压直流输电系统是换流站内重要设备之一，直接影响到整个直流输电系统及相关交流系统的安全稳定运行。
Purpose: Used in circuit of DC or low frequency AC.
用途：用于直流或低频交流电路中。
It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
该方案能在80 ~ 265V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
Feed Power: uses the AC servomotor, fast in response, high in precision, low in noise, low in braking heat loss but long in service life.
送料动力：采用交流同步伺服电动机，具有响应快，定位精度高，低噪音，制动热埙小，寿命长等特点。
In breakers for operation in low-voltage ac circuits, advantage is taken of the voltage required to establish a cathode spot.
用于低压交流回路的断路器，由于在过零换向电压不能满足再次阴极放电起弧的需要，因此具有容易灭 弧的优点。
The utility model relates to an autorotation silent electricity-saving coil, used on the ac contactor in the low-voltage controlling circuit, realizing the silent electricity-saving running.
本实用新型涉及的是一种自转无声节电线圈，用于低压控制电路中的交流接触器上，并实现无声节电运行。
Today, VACON is one of the leaders in Low-voltage AC Drive market in the world and provides AC Drive products and solutions to meet the needs of industry and the public sector worldwide.
作为全球唯一百分百专注于交流变频器产品的供应商，VACON已成为世界低压交流变频传动领域的主要领导者之一，为工业和公共设施领域的用户提供高性能、高可靠性的交流驱动控制产品及解决方案。
The fault trip of AC filter overload protection in Gezhouba converter station leaded to the out of service of all HP11/13 low-pass AC filters.
根据葛洲坝换流站一次双极停运事故的现象，指出过负荷保护误动作是这次事故的主要原因。
Largely used in color tv, program-controled exchange machine, computer, telephone. fox and the instrumental circuit for the purpose of DC, impulse and AC at low voltage.
该产品广泛使用于彩电、程控交换视机、计算机、电话机、传真机及仪器、 仪表电 路中作直流脉动、脉冲及低压交流功能之用。
Largely used in color tv, program-controled exchange machine, computer, telephone. fox and the instrumental circuit for the purpose of DC, impulse and AC at low voltage.
该产品广泛使用于彩电、程控交换视机、计算机、电话机、传真机及仪器、 仪表电 路中作直流脉动、脉冲及低压交流功能之用。
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