constant-power meaning in English
恒定功率
Examples
- A change in converter control mode from constant - power to constant - current always improve system voltage stability
当换流器控制模式从定功率控制变为定电流控制时，总是改善系统的电压稳定性。 - The voltage - stabilizing step is now focused on the control of constant - power in the semiconductor laser . in fact , the output voltage is changed when the load changed . as a result , it comes to be an important technology to make it stable when the load changed
但事实证明,随着负载的变化,光电转换电源输出端的电压是不稳定的,因而采用何种方法确保在负载变化的情况下电源输出仍是稳定的就成了光电转换电源研究的一个重要问题。 - Based on these advantages we analyze the performance of constant - power variable - rate m - qam schemes for spectrally efficient data transmission over nmf channels . by introducing the adaptive modulation approach , we gain two things : 1 ) the error rate is kept at a constant level . 2 ) the achievable spectral efficiency comes within 5 db of the shannon capacity limit . at the last chapter , the presentation of a single base station and a single mobile scenario proved the feasibility of adaptive schemes
然后作者的精力转入信道的自适应方案的研究中，首先通过研究发现nakagami衰落因子的适当调整可以近似于常见的瑞利衰落和莱斯衰落，接着研究在无线信道中采用三种不同自适应方案时的信道容量，研究表明速率的调整是增加信道容量的关键，在此基础上，着重研究了离散变速率qam的情况，表明这种调制方案无论在频带利用率还是在系统平均误码率比其它情况提高很多。 - Nowadays , the constant - power - control variable displacement axial - piston hydraulic pump have be used in most of construction machine and equipment for their power equipment . the quality of the whole machine is determined by the quality of the piston pump . because the piston is the most important part of the piston pump , it is becoming necessary to study of the piston with modern design method
由于大多数工程机械利用全功率轴向柱塞变量泵作为其动力装备，柱塞泵质量的好坏将关系到工程机械的总体质量，而柱塞又是柱塞泵的主要部件，因此有必要利用现代设计方法对柱塞泵的柱塞进行研究分析。 - A mathematic model of the motor is builded and emulated through matlab . the low - speed and constant - torque , high - speed and constant - power state is analyzed and researched , also the software approach of simulation to the driver has been done , a digital signal processor tms320lf2407 is developed successfully to control the perm square - wave bldcm driving airscrew of solar powered unmanned engine . it is useful to the further study
在matlab下建立了电机的数学模型，通过计算机仿真，验证了数学模型的正确性，同时在理论上对低速恒转矩高速恒功率运行进行了分析与研究，提出了一种用模糊控制的方法实现恒功率控制，并对驱动器进行了系统仿真，成功的研制了以数字信号处理控制器tms320lf2407为控制核心的驱动器，控制无刷直流电动机驱动太阳能无人飞机的螺旋桨，为后面继续研究工作提供了参考。