It is difficult to draw the time response curve and the frequency response curve of high order system in the control system of mechanical engineering, which is inconvenient for the understanding of the system's characteristics.

Make use of computer in analysis if necessary, both the time response curve and Performance sPecifications of system, original or corrected, along with corrective data as a result of design also can be printed out.

(2)In short term test the effect of 25μmol/L Zn 2+ was obvious. Cellular IP 3 content increased significantly just after treatment of 25μmol/L Zn 2+ for 15 minutes, and remained at a high level in two hours. The time response curve kept stable.

（2） 在短期实验中，25μmol／ L Zn2 ＋ 对成骨细胞的作用比较明显，仅作用15 分钟， I P3 含量即明显提高，且在以后的各个作用时点均明显高于对照组，但时间效应曲线平坦；

Time response curve after exposure to 5.0 Gy of γ- irradiation was characterized by an initial slow increase in the number of apoptotic thymocytes during the first 6 hours post-irradiation.

When checking a third generation fighter aircraft which is in service with MIL-1797-STD, it is thought that it is more reasonable to get the Chalk criteria(i.e. ratio of peak values, uprising time and time delay) with the time response curve obtaining through transferring function of a high order system, than time response curve obtaining through solving differential equations corresponding to the aircraft and its control system.

When checking a third fighter aircraft which is in service with the standard of 1797, it is thought that it is more reasonable to get time domain indices such as ratio of peak values uprising time etc. with time response curve obtaining through transferring function of high order system.

Using numerical simulation method,the time response curve,plane chart,power chart and poicare section chart of one kind of nonlinear vibration in structure engineering are simulated.

According to the time response curve, while the highest toxic activity against S.

The deadtime D can be easily read from the time response curve analysis.

The duration of the inhibitory effect of 100 mM Org 9935 was 120 minutes; the time-response curve showed a more gradual decline than with rolipram.

Time-response curve for plasma glucose and insulin levels in a subject with NIDDM after inhalation of 1.10 U/kg insulin aerosol.

Figure 3 shows a typical time-response curve for one of the study subjects.

Based on the algebraic method of series expansion, a simple and unified method to obtain the low-order approximate transfer functions for highly damped thermal pro-cess is proposed. The results are sufficiently accurate for the simulation and analy-sis of single-loop control systems. Examples are given for typical processes with lumped parameters, with distance-velocity lag and heat exchangers. Complex processes such as the heating surface of boiler can also be reduced to low-order approximation.The paper also...

Based on the algebraic method of series expansion, a simple and unified method to obtain the low-order approximate transfer functions for highly damped thermal pro-cess is proposed. The results are sufficiently accurate for the simulation and analy-sis of single-loop control systems. Examples are given for typical processes with lumped parameters, with distance-velocity lag and heat exchangers. Complex processes such as the heating surface of boiler can also be reduced to low-order approximation.The paper also discusses the method of obtaining a low-order approximate transfer function from the experimental time-response curve, and proposes an improved procedure of numerical integration as proposed by M. P. Simoyu.

This paper presents a computer-aided design method for linear time-invarient system compensation in frequency domain. It can be applied to the compensation for control systems containing different origin poles (Types O—2), real zeros, real poles and complex poles. Lead, lag, and lead-lag compensations under given performance requirement can be achieved. The desigh result of the compensated parameters can be printed by the computer. It can also print the time response curves and performance for both...

This paper presents a computer-aided design method for linear time-invarient system compensation in frequency domain. It can be applied to the compensation for control systems containing different origin poles (Types O—2), real zeros, real poles and complex poles. Lead, lag, and lead-lag compensations under given performance requirement can be achieved. The desigh result of the compensated parameters can be printed by the computer. It can also print the time response curves and performance for both the original Systems and the compensated systems through computerized analysis, if necessary. Satisfactory results were obtained in many practical cases.

The dynamic response of a seismograph is usually expressed by means of amplitude- and phase-frequency responses in the frequency domain, but the construction of the synthetic seismogram and the restoration of the true ground motion from sei-smograms are carried out in the time domain. Therefore, it is nesessary to know the time response (pulse response) of the seismograph. Theoretically, the time response can be numerically computed by using the Fast Fourier Trnsform...

The dynamic response of a seismograph is usually expressed by means of amplitude- and phase-frequency responses in the frequency domain, but the construction of the synthetic seismogram and the restoration of the true ground motion from sei-smograms are carried out in the time domain. Therefore, it is nesessary to know the time response (pulse response) of the seismograph. Theoretically, the time response can be numerically computed by using the Fast Fourier Trnsform (FFT) from experimental amplitude- and phase-frequency response data, but results show that the computation error of time response is larger, especially in the initial motion range. Therefore, in the computation of the time response of a seismograph it is better to use the transfer function, from which the time response may be obtained by the inverse Laplace transformation.At present, three kinds of seismographs are used at Chinese seismic stations. They are the direct-coupled seismometer, the galvanometric seismograph, and the electronic seismograph. For the first two kinds the equations of motion and transfer functions are known. The coefficients of the transfer functions are determined by means of classical step-by-step calibration. For the electronic seismographs, such as the type DD-1 and type DK-1, however, the coefficients of the transfer functions of the electronic circuits have to be determined first before determining the analytic expression of their amplitude- and phase-frequency responses and the time responses.In this paper the transfer functions of the type DD-1 and type DK-1 electronic seismographs are determined by applying complex curve fitting on the basis of step-by-step calibration. Analytic expressions of frequency and time responses of the type DD-1 and type DK-1 seismographs are derived from their trasfer functions and their amplitude- and phase-frequency response curves, and time response curves are given.