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频率加权
相关语句
  frequency-weighted
     A Study on H_∞ Controller Order Reduction for Vehicle Suspension System Based on Frequency-weighted Left Coprime Factorization
     基于频率加权左互质分解的汽车悬架H_∞控制器降阶研究
短句来源
     Frequency-weighted filtering method and its application
     频率加权滤波方法及应用
短句来源
     The filtering principle is introduced into the high resolution processing of seismic data to highlight high frequency seismic signals, and the fil-tering technique is called a frequency-weighted filtering.
     本文将此滤波原理引入地震信号的高分辨率处理,提升高频地震信号,称为频率加权滤波。
短句来源
     By utilizing frequency-weighted coprime factorization based controller method, the order of active suspension controller can not only be considerably reduced, but also the lower-order controller could obtain the very similar closed-loop control performance with the full-order one.
     采用频率加权互质分解的控制器降阶方法,不仅很大程度地降低了主动悬架高阶控制器的阶数,而且降阶控制器能获得与全阶控制器十分相近的闭环控制性能。
短句来源
     Then under the precondition of choosing specific weighted matrix to ensure the stability of lower-order closed-loop system,and by applying the controller order reduction technique based on frequency-weighted left coprime factorization(FWLCF),the order of designed controller is reduced,and corresponding simulations are carried out.
     进而在选取特定加权矩阵保证降阶闭环系统稳定前提下,应用基于频率加权左互质分解的控制器降阶方法,对所设计的高阶H∞控制器进行降阶。
短句来源
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  frequency weighting
     The Principle of Frequency Weighting for Sound Recording and Reproducing in Motion-Picture and Television
     影视录还音的“频率加权”原理
短句来源
  “频率加权”译为未确定词的双语例句
     A limitation upon low-frequency loudspeaker performance is derived in the form of a frequncy-weignted integral of efficiency.
     文章以效率的频率加权积分形式导出低频扬声器性能的限值。
短句来源
     This paper presents the experiment results of human responses to low frequency vibration below 1.0 Hz in respect to ISO2631/DP1989 revised draft proposal.
     ISO 2631/DP-1989修改草案[1]对原标准作了修改,推荐了一组频率加权函数曲线。
短句来源
     CFD numerical simulation coupling with the wind direction frequency weighted(WDFW) method was carried out based on the conditions that were measured.
     运用风向频率加权(WDFW)方法,结合大气流动和污染物扩散的CFD模型进行数值模拟计算.
短句来源
     2. By utilizing model approximation minimization based and closed-loop performance optimum based methods respectively, the lower-order controller design problem is studied.
     2.本文分别采用基于模型误差最小和基于闭环性能指标最优的频率加权方法,研究了降阶控制器的设计问题。
短句来源
     In order to design cooling systems for transmission systems of vehicles accurately, a weighting mean heat balance calculation method based on the heat generation statistics of use frequency of every gear mode was presented here.
     为准确设计车辆传动装置的冷却系统,提出了一个基于变速箱各档位热工况的统计使用频率加权平均的方法,进行传动系统的热平衡计算.
短句来源
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  frequency-weighted
To get a reasonably low-order compensator, frequency-weighted reduced-order models are exploited, with the reduction error treated as an uncertainty.
      
acceleration, at three locations in the bus has been frequency-weighted according to the comfort standard ISO 2631:1997.
      
Vibration measurements showed that the frequency-weighted accelerations for two rock-drills and two small chipping hammers ranged from 19.7 to 36.4 m/s2.
      
Vibration data, daily exposure time and total duration of exposure period were used to calculate two indicators of vibration dose such as the four-hour, energy-equivalent, frequency-weighted acceleration (m/s2) and the vibration exposure level (dB).
      
The frequency-weighted energy equivalent acceleration for 4 h was 4.6-4.7 m/s2.
      
更多          
  frequency weighting
The results enable recommendations for the frequency weighting of WBV between 0.63 and 1 Hz, as well as for the equivalence of noise and WBV with combined exposure.
      
On the basis of the experimental results a new proposal for frequency weighting of the three different axes and an energetic summation procedure are derived.
      
It performs well, outperforming steadily the classical OKAPI term frequency weighting formula but below that of KL-Divergence from language modeling approach.
      
Another difference in reporting involves the use of frequency weighting factors.
      
As shown, enabling the frequency weighting on the baseline causes a PSNR loss of 2 3 dB.
      
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The main requirement to sound quality in communication is clearness. However, not only is the clearness required for the sound in motion-picture and television, but the sound should also adapt to the role in a play and gives the audience aesthetic enjoyment, or rather abridged as "lucid, similar and aesthetic". If the sound quality of MP or TV sound source is qualified, the sound transmission system, including the recording and reproducing channels, is required to be high fidelity. Because the sound physiological...

The main requirement to sound quality in communication is clearness. However, not only is the clearness required for the sound in motion-picture and television, but the sound should also adapt to the role in a play and gives the audience aesthetic enjoyment, or rather abridged as "lucid, similar and aesthetic". If the sound quality of MP or TV sound source is qualified, the sound transmission system, including the recording and reproducing channels, is required to be high fidelity. Because the sound physiological function of the audience is nonlinear, the sound signal must be treated by "aural equalization', or "frequency weighting', to realize high fidelity.

在通讯中对声音质量的首要要求是清晰。可是电影电视的声音不但要求清晰,而且要求声音符合“角色”,并给观众以“美”的享受,或简缩为“清、似、美”。如果影视声源发出的声音质量合格,则要求声音的传输通道,包括录音和还音通道,具有“高保真度”。由于观众的“声生理函数”是非线性的,所以必须对声信号做“听音均衡”或“频率加权”处理,以实现高保真度。虽然“频率加权”早已成为国际标准,但至今为止,其原理和数学模型都很不完善甚至短缺。本文阐明了“频率加权”原理,建立了数学模型,并提出了严格的定义和概念。它们将成为研究音质评价、声信号辨识、智能模拟、心理信息解译等学科的基础。也是影视录还音机设计的部分要领。

The LQ method with frequncy-shaped weighting matrices in the quadratic cost funtional is the extension of LQ method. This method can better suppress the response in the high frequncy range than LQ method. In the paper a experimantal crane computer control system designed by using frequncy shaping method is described. The system can control the position of mass hanging from the crane without producing serious residual oscillations when the crane is suddenly moved or stopped. The researches show the effecitiveness...

The LQ method with frequncy-shaped weighting matrices in the quadratic cost funtional is the extension of LQ method. This method can better suppress the response in the high frequncy range than LQ method. In the paper a experimantal crane computer control system designed by using frequncy shaping method is described. The system can control the position of mass hanging from the crane without producing serious residual oscillations when the crane is suddenly moved or stopped. The researches show the effecitiveness of frequncy shaping method. Swing of the hanging mass is well suppressed.

在代价函数中具有频率加权的LQ方法是一般LQ方法的推广,它比LQ方法能较好地抑制高频范围内的响应。本文介绍了采用频率加权方法设计的实验性桥式起重机数字控制系统,该系统在起重机突然起动或停止时,可以控制吊物的位置不产生严重的残留振荡。研究表明频率加权最优控制是有效的,系统成功的抑制了吊物的摆动。

The synthesis of frequency-shaped weighting matrixes in the quadratic cost functional and the theory of implicit model-following is presented and the approach to select frequency-shaped weighting matrixes is studied. The procedure using this method to design flight control law is given. In the synthesis the stability, desided transient and ste-ady-state response characteristics and robustness of system are considered so as to get the satisfactory synthetic results. This mehtod is used to design a flight control...

The synthesis of frequency-shaped weighting matrixes in the quadratic cost functional and the theory of implicit model-following is presented and the approach to select frequency-shaped weighting matrixes is studied. The procedure using this method to design flight control law is given. In the synthesis the stability, desided transient and ste-ady-state response characteristics and robustness of system are considered so as to get the satisfactory synthetic results. This mehtod is used to design a flight control law for a fight aircraft. In comparison with the flight control law designed by using normal linear quadratic method, the flight control law designed by using this method has not only satisfying stability and transient response characteristics but robustness is also improved. The structural mode response of the aircraft is well suppressed. These results are proved by digital simulation and real-time microprocessor realization.

频率加权二次型法与隐模型跟踪理论综合起来,在系统设计时,考虑系统的稳定性、动态特性和鲁棒性要求,以期达到满意的综合指标。利用所述方法,设计了飞控系统的控制律。通过数字仿真及实时混合仿真表明,与通常最优二次型方法所设计的控制律比较,用本文所述方法设计的控制律,不仅有满意的稳定性和动态特性,而且还改善了鲁棒性。

 
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