负反馈

Negative feedback can produce distortion of its own, however, and too much of it becomes obvious when listening to sibilants (the "s" in words), where it sounds as if someone is hissing at you.

负反馈可以产生自己的失真，但是，过量的变得明显时，听sibilants，在那里好像有人嘶嘶你。

With an output laser intensity induced negative feedback control of resonator gain, a quasi-continuous prelase with duration of ～100 μs is established, then Q-switch during this prelase .

用输出激光强度负反馈控制谐振腔的增益，建立了准连续的～ 10 0 μs宽预激光状态，然后在此预激光基础上调Q。

Prelase Q-switching method: By using output laser intensity to negatively feedback control the cavity loss, a smooth and quasi-continuous prelase of ～100μs width is built, then the cavity is Q-switched during prelase.

预激光调Q法：用输出激光强度来负反馈控制谐振腔的损耗，建立一个平坦的、准连续的～100μs宽预激光状态，然后在此预激光基础上调Q。

The wire-feed speed control system based on negative feedback of speed is designed. The test proves that the performance of this system has been noticeably improved than the common systems. The system can be output steadily under the factors of wire-feed resistance changing or certain different performance of motors, and this system is the base for the further improving of the quality of the pulse MIG welding.

本文设计了基于速度负反馈的送丝调速系统，实验证明该系统的性能较一般系统有了明显的提高，在送丝阻力变化、电网波动或电机性能存在一定差异的情况下，该系统均可以稳定输出，为进一步提高脉冲MIG焊接工艺质量打下了基础。

Usage and maintenance of welding and cutting machines(20)——Configuration and characteristics of CO_2 welder's wire feeder

在CO2 焊送丝机基础上增加了一级减速器，调速电路采用自行设计的测速负反馈控制系统。

The characteristic of this paper is that high-power RF Auto-follow circuit is introduced in this system. RF Auto-follow signal produced by high-power RF Auto-follow circuit is provided to radio tube RF high-handed monofier, and it is adjusted reliably using negative feedback to track the running of all of the system.

引入大功率射频激励电路是该系统的一大特色，它产生的射频激励信号提供给电子管射频高压振荡电路，并用负反馈跟踪整个系统运行，调整射频激励信号，使整个系统运行稳定可靠。

In order to optimize the torque feedback system, the drill string is often simplified as a single - mode torsion pendulum.

原有的扭矩负反馈减振系统优化设计是在将钻柱系统看作单自由度扭转摆的基础上进行的。

The resulting speed-up comes from the reduction of the input impedance of the picoammeter due to negative feedback.

速度提高的原因是由于负反馈的作用使皮安计的输入阻抗降低。

When the system starts, the speed outer ring saturats non-functional, the current inner ring plays a major role to regulate the starting current to maintain the maximum so that the speed linear change, to reach a given value; when it operates steadily, the speed negative feedback from the outer ring plays a major role ,to let the speed changes with the given speed voltage , at the same time the current inner ring regulates the armature current of motor adjustment to balance the load current.

该系统起动时，转速外环饱和不起作用，电流内环起主要作用，调节起动电流保持最大值，使转速线性变化，迅速达到给定值；稳态运行时，转速负反馈外环起主要作用，使转速随转速给定电压的变化而变化，电流内环跟随转速外环调节电机的电枢电流以平衡负载电流。

The results suggested central GCL of the jaws and GCT of long bones may represent the same pathologic process and the difference between them might be relative to age, location and other unknown factors.

而OPG在多核巨细胞和部分圆形单核细胞中表达，提示在GCL和GCT中存在由OPG介导的抑制OC生成和骨吸收的负反馈机制。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新