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The ADSPTS101 is a high performance digital signal processor (DSP) with good properties that include parallel processing and a high speed.


The research about hysteresis characteristic of finger seal (FS), which was carried out based on the model with static loads, could not reflect the dynamics behavior of FS system when the rotor runs at high speed.


The developed actuator is characterized by high frequency (30 Hz), high speed (380 μrad/s), large travel (>amp;gt;270°), high resolution (1 μrad/step), and work stability.


Shaking table test of composite foundation reinforcement of saturated silty soil for high speed railway


Information on the pressure at the edge of a turbulent stream is necessary for many dynamic calculations of waterworks and for the design of structures which move at high speed in water or air.

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 To meet the needs for highspeed draught of machine tools, a drive circuit for the power stepping motor is proposed. The formula for calculating the parameters of circuit elements is obtained through circuit analysis and the concept of mean values of composite rotating electromotive forces is made use of to find the formulas for winding currents both in high and low frequency ranges, thus determining the range of voltage selfregulation and the normalized torquefrequency characteristic in... To meet the needs for highspeed draught of machine tools, a drive circuit for the power stepping motor is proposed. The formula for calculating the parameters of circuit elements is obtained through circuit analysis and the concept of mean values of composite rotating electromotive forces is made use of to find the formulas for winding currents both in high and low frequency ranges, thus determining the range of voltage selfregulation and the normalized torquefrequency characteristic in low frequency range. Finally, the stability conditions for the circuit are briefly treated of.  为了适应机床高速拖动的需要,提出了一种新的功率步进电机驱动线路.本文通过线路分析,给出了电路元件参数的计算公式;运用合成旋转电动势平均值概念,求得了在高频及低频两种运转状态下绕组电流公式,从而确定了自调压范围及低频区归一化矩频特性.文中还简要地讨论了线路稳定条件.  A high—speed transformer—coupled ROM which is constructed in the form of plug in boards is described in this paper.Two magnetic rings are used as a memory cell.The ROM has a word length of 64 bits and a storage capacity of 3072 words with work cycle less than 600ns and read time less than 300ns.Used successfully in the DJS200/10 Computer for a long time, this type of ROM has been found cheap in cost,high reliable and easy to debug.The logical principles and main circuits of this ROM are given... A high—speed transformer—coupled ROM which is constructed in the form of plug in boards is described in this paper.Two magnetic rings are used as a memory cell.The ROM has a word length of 64 bits and a storage capacity of 3072 words with work cycle less than 600ns and read time less than 300ns.Used successfully in the DJS200/10 Computer for a long time, this type of ROM has been found cheap in cost,high reliable and easy to debug.The logical principles and main circuits of this ROM are given in this paper.  本文叙述一台高速变压器耦合型只读存贮器。存贮单元采用双磁环,扦件式结构,字长64位,容量3072字,工作周期小于600ns,读出时间小于300ns。它已成功地使用在 DJS200/10机上。工作表明:它成本低、工作可靠和易于调整。文中给出了该只读存贮器的逻辑原理和主要线路。  The problem of building up a highspeed servomechanical system in engineering practice have been discussed. The main points are: 1. A Small inertial electronic circuit has been developed instead of the large inertial filter circuit and power element. 2. Tachometer has been used to improve performance of servomotor. The key of this work lies on designing a satisfactory power element and avoiding the spring connection of machines. 3. The method of combining the machine and electronic circuits has been... The problem of building up a highspeed servomechanical system in engineering practice have been discussed. The main points are: 1. A Small inertial electronic circuit has been developed instead of the large inertial filter circuit and power element. 2. Tachometer has been used to improve performance of servomotor. The key of this work lies on designing a satisfactory power element and avoiding the spring connection of machines. 3. The method of combining the machine and electronic circuits has been proposed to the damping of transmission effectively. 4. By using the analytic method introduced in this paper, the specification of optimal highspeed system can be nearly realized by dynamic design. This method is simplier and easier than other general synthetic methods for handling by technicians. 5. The effect of weak damping secondorder element should be considered as the influence of small parameters on feedback control system is taken into account. The highspeed performance of system will be effected under the influence of correction of lowpass filter.  本文着重讨论建造快速伺服系统工程实践中的问题。其主要之点有： １．必须研制小惯性电子线路以取代惯性较大的平滑滤波电路及功率部件等。 ２．采用测速反馈改善伺服电机性能的关键在于设计理想的功率部件和避免机组的弹性联接。 ３．采用机械与电子线路相结合的方法，可以有效地的增加动力传递机构的阻尼。 ４．利用本文介绍的分析方法进行动态设计，可使系统接近最优快速系统的指标。方法简便，比之一般的综合方法易为工程技术人员掌握。 ５．讨论小参数对反馈系统的影响时，需要注意弱阻尼二阶环节的作用，用低通滤波进行校正将会影响系统的快速性。   << 更多相关文摘 
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