| 1. | A novel speed measuring method for induction motor in voltage 晶闸管调压系统中的电机转速检测新方法 |
| 2. | The hydraulic transient process and calculating have always been the problems regarded by the engineers 调压系统的水力瞬变过程和计算一直是设计人员关注的重要问题。 |
| 3. | The mathematical model of synchronous generator voltage regulation system of ship power station using h controller is first put forward in this paper 本文首次提出了应用h _控制器的船舶电站同步发电机调压系统的数学模型。 |
| 4. | At last , this paper also design a small capacity buck - boost type chopper system , pointing out the problems and difficultes of the ac modulation voltage system in the future 最后,对小容量斩波控制buck - boost电路调压系统作了初步的设计,指出了本课题研究调压系统有待解决的一些问题。 |
| 5. | The ascertainment of surges in surge tank and waterhammer pressure in pipe systems is the key point of the design of surge tanks and the safe function of the water power station 调压室中的水位波动以及压力管道水击压强的确定对调压系统的正确设计和确保电站调压系统的正常运行至关重要。 |
| 6. | After that , the evaporative cooling commute circuit system was build - up . the temperature of thyristor and the thermal resistant between thyristor and air was calculated . the corresponding parameter was compared in different cooling system 文章在对晶闸管传统冷却方式深入透彻理解的基础上,从理论上分析了可控硅整流电路采用蒸发冷却技术的可行性以及引入调压系统的可行性和必要性,进而又进行了实验研究。 |
| 7. | The control nuclear of this system is base on the single chip micro - comupter , and use the fuzzy control , transform the dc voltager - stabilzed power supply based on simulate component into a digital one . in this paper , it discussed the theory of three - phase half control ; design the fuzzy controler ; used the fuzzy control in this system 由于目前的直流电源柜由模拟电路实现,硬件电路复杂、元器件易老化、存在温漂和抗干扰能力差的缺点,因此提出了单片机模糊控制晶闸管直流调压系统的课题,对直流电源柜进行改造,支持电站系统的工作。 |
| 8. | The mathematical model of phase - compounding excitation system , thyristor excitation system and brushless excitation system are given separately . the design of h controller for synchronous generator voltage regulation system is transformed into a mixed sensitivity problem . the uncertainty of synchronous generator model is analyzed in the light of this control object 分别给出了船舶电站相复励励磁系统、可控硅励磁系统、无刷励磁系统的数学模型,把同步发电机调压系统h _控制器的设计归结为混合灵敏度问题,针对同步发电机这一控制对象,分析了其模型的不确定性,建立了同步发电机广义对象的数学模型。 |
| 9. | Simulation and analyses on the model are done . the paper gives detailed analyses of the motor ' s exciting current by the experiment of the voltage regulation system for the first time . the methods of improving automatic voltage regulator are presented based on the analyses of results 然后设计了发电调压器的硬件电路,建立了调压系统的频域模型并进行了仿真分析,对发电系统作了较为全面的实验,首次详细分析了励磁电流的变化规律,分析了实验结果,提出了调压器的改进。 |