synchronous tracking 中文意思是什麼
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In this paper, research on the algorithm of complete digital if and baseband transmission system and the realization of transmitter and receiver. / 4 - dqpsk is chosen as digital modulation scheme. the scheme of demodulation is baseband differential detection. sliding correlator can realize the symbol synchronous acquisition ; early - late gate synchronizer is used to do symbol synchronous tracking
系統的發射機選定/ 4 - dqpsk為調制方式，接收機採用基帶差分解調的非相干解調方式，滑動相關器捕獲發送的pn序列，早遲門同步器跟蹤符號同步，使用相關器對同步后的符號進行最佳判決，並在這些演算法實現的基礎上，實現了直接序列擴頻和解擴技術。 -
During simulating the observation of the synchronous debris, choicing two sites : nanjing observatory and kunming observatory, employing two ways that are tracking stars and tracking satellites, and observing the geostation - ary satellites of the identical geographical longitude are in this paper. the method of finding the new object and its initial orbit are given, too
在對于高軌空間碎片進行了觀測模擬時，分別選取南京和雲南兩個觀測站；採用兩種跟蹤方式：跟蹤恆星和跟蹤衛星；並對于同一地理經度上的同步衛星進行觀測；提供了發現新目標的方法；並給出了新目標的初軌多種計算方法。 -
In order to improve dynamic performance of the control system in the assembly robot, according to acpmsm ( ac permanent magnet synchronous motor ) vector control model and the control idea about preview control, the paper presents a kind of control strategies that is composite of a primary pid ( proportion integral dif - ferenfial ) with a preview feed - forward compensation, its compensation is equivalent to linear combination of future adjacent difference, the simulation results show that it can not only improve the system tracking performance effectively, but also implement easily
摘要為了提高裝配機器人控制系統的動態性能，依據交流永磁同步電機矢量控制模型，從預見控制的思想出發，提出了一種在原有pid基礎上外加預見前饋補償的控制方法，這種控制方法的前饋補償項取未來幾項目標值一階差值的線形組合，並模擬驗證了該控制方法對提高系統跟蹤性能的有效性和簡單可行性。 -
Finite time tracking controller design for permanent - magnet synchronous motor
永磁同步電動機的有限時間跟蹤控制 -
The control hardware for real time dynamic image grabbing and grading was designed, and the facility used for synchronous tracking of fruits was also set up
課題完成了對動態圖像採集和分級控制的硬體設計，實現對水果實時位置信息的同步跟蹤。
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