1) standard negative step force
标准负阶跃力
1.
A new standard negative step force device, which is recently developed and used for large force value (up to 1200kN) and wide frequency band (highest analyzing frequency is 50kHz) force transducer′s calibration, is introduced in this paper.
本文介绍了新研制成功的用于对大力值 (最大 1 2 0 0 k N)、宽频带 (最高分析频率 5 0 k Hz)的力传感器动态特性校准的标准负阶跃力装置 ,该装置是基于帕斯卡原理和冲击卸荷方法来实现的 。
2) negative step force
负阶跃力
1.
In this paper,a kind of design method of the unloading unit is creatively advanced that is used for generating large value and wide frequengcy range negative step force.
本文创造性地提出了一种实现大力值宽频带负阶跃力的卸荷部件设计方法。
3) step load
阶跃负载
1.
Use the throttle speed governing system with by-pass oil way in which the hydraulic cylinder was the executive as research object in this thesis , the trial research about the effect on the pressure p1 of the hydraulic cylinder chamber without piston-rod when series-connecting throttle or timing valve on the by-pass oil way under the step load changing have made.
通过试验研究得出系统在不同的流量阀开度、不同溢流阀限定压力下，给系统施加不同的阶跃负载信号，液压缸无杆腔压力p_1的动态变化规律。
2.
Used the metering-out control system in which the hydraulic cylinder was the executive element as research object in this thesis, the experimental research about the effect on the pressure P1, P2 of the hydraulic cylinder chambers when series-connecting throttle valve or governor valve on the return oil-line under the step load changing have made.
通过试验研究得出系统在不同的流量阀开度、不同溢流阀调节压力(进口压力)下，液压缸两腔压力P_1、P_2随阶跃负载变化的规律： 当出口节流调速系统的回油路上串接节流阀时，随阶跃负载的增加，在相同流量阀开度、相同溢流阀调节压力的情况下，液压缸有杆腔压力P_2(t)的超调量是减小的，上升时间、峰值时间以及调整时间也是减小的；液压缸无杆腔压力P_1(t)的超调量是增加的。
4) step calibration
阶跃标定
1.
This paper discusses the three-frequency-point sine-wave calibration and step calibration and presents a new fast calibration method combining both of above calibration methods,it is pracitical.
讨论了宽频带地震计三点正弦波标定和阶跃标定,并将两种方法结合起来形成快速标定新方法,该方法具有一定的实用价值。
2.
First apply Fourier Transform to the step calibration response waveform and then deduct the frequency spectrum.
对阶跃标定电流的响应波形进行傅立叶变换(FFT)和扣除阶跃信号频谱的运算获得地震计的幅频特性;从稳态正弦标定电流的响应波形可直接提取幅频特性,然后用高斯牛顿迭代法拟合出地震计传递函数的各个系数。
3.
The damping and frequency of seismometer is obtained by using the step calibration function.
利用地震观测系统中的阶跃标定响应记录 ,在频域基于阶跃信号的幅频特性确定地震计的阻尼常数和自振周期。
5) stepped Load
阶跃性负荷
6) step load acceptance
带阶跃负荷
补充资料：负力
1.自恃其力。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条