| 中国上市公司股权再融资时机选择行为研究 |
| |
| 引用本文： | 汤胜.中国上市公司股权再融资时机选择行为研究[J].湖南农业大学学报(自然科学版),2013,40(3):59-63. |
| |
| 作者姓名： | 汤胜 |
| |
| 作者单位： | （1.湖南大学 电气与信息工程学院，湖南 长沙 410082； 2.海上风力发电技术与检测国家重点实验室，湖南 湘潭 411100） |
| |
| 摘 要： | 提出了一种比例谐振（Proportional Resonant, PR）控制器的改进模型，将其应用于永磁同步电机控制中.用改进的PR控制器替代传统的PI控制器，节省一次坐标变换，省去了受温度及电机参数影响的交叉解耦项和前馈补偿项，简化了控制算法.仿真和试验结果表明，引入改进PR控制器的永磁同步电机控制系统控制性能优越，能够实现对交流输入信号的无静差跟踪，系统对低次谐波以及指定次谐波具有很强的抑制能力，具有重要的实用价值.
|
| 关 键 词： | 频谱分析 PR控制器 永磁同步电机 谐波抑制 |
Timing of Seasoned Equity Offering of China's Listed Companies |
| |
| TANG Sheng.Timing of Seasoned Equity Offering of China's Listed Companies[J].Journal of Hunan Agricultural University,2013,40(3):59-63. |
| |
| Authors: | TANG Sheng |
| |
| Abstract: | This paper proposed an improved proportional resonant(PR) controller, which was applied to the permanent magnet synchronous motor control system.Compared with the traditional PI controller, it can not only make the whole control system save a tedious coordinates transformation, but also remove cross-decoupling compensation and feed forward compensation influenced by temperature and electrical parameters, thus simplifying the control strategy.Simulation and experiment results show that the introduction of the improved PR controller to permanent magnet synchronous motor control system can achieve zero static error with the AC input signal, ant the system has a strong inhibitory ability in low-order harmonic and designated harmonic. |
| |
| Keywords: | spectrum analysis proportional resonant controller permanent magnet synchronous motor harmonic inhibition |
|
| 点击此处可从《湖南农业大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《湖南农业大学学报(自然科学版)》下载免费的PDF全文 |
