發(fā)布時間：2018-04-22 09:16

  本文選題：分子電偶極矩 + 馳豫過程��； 參考：《華中科技大學(xué)》2014年碩士論文

【摘要】：慣性導(dǎo)航系統(tǒng)是利用慣性儀表測量運動載體在慣性空間的角運動和線運動的自主式導(dǎo)航系統(tǒng)。它根據(jù)載體運動微分方程組能夠?qū)崟r、精確地算出運動載體的位置、速度和姿態(tài)角。在慣性導(dǎo)航系統(tǒng)中，陀螺儀發(fā)揮了很重要的作用。 陀螺儀是測量轉(zhuǎn)動角速度的主要工具，它的主要特點是具有定軸性和進動性。一般常規(guī)陀螺儀和利用原子在靜磁場作用下自旋進動實現(xiàn)的新型原子自旋陀螺儀都具有這些性質(zhì)。本文以進動陀螺儀的工作原理為基礎(chǔ)，提出了在靜電場作用下利用分子電偶極矩進動來測量轉(zhuǎn)動頻率的初步方案。 本文首先介紹了各種進動式陀螺儀的工作原理，然后以進動式陀螺儀的工作原理為基礎(chǔ)，提出在靜電場作用下以分子電偶極矩進動來測量轉(zhuǎn)動頻率的方案。對方案所需的分子種類進行了分析挑選，選擇CH3F分子作為實驗分子，并對其在靜電場下進動的經(jīng)典圖像和量子圖像進行了詳細描述，同時闡述了該方案中涉及的物理過程和物理量。通過對常溫下分子態(tài)感應(yīng)電場幅值的分析，將分子態(tài)|J=6，，|K|=6㧐作為實驗中的共振分子態(tài)，并利用提高靜電場強度的方法抑制其它分子態(tài)的干擾。在靜電場為5.0×104V/m，溫度為300K，分子密度為2.7×1014cm-3的條件下，CH3F分子的進動頻率為4.2×102MHz，感應(yīng)電壓幅值為10-6V，對轉(zhuǎn)動頻率的探測靈敏度可以達到100Hz的水平。另外，如果利用該方案測量電場，那么電場大小的測量精度可以達到0.07V/m。
[Abstract]:Inertial navigation system (ins) is an autonomous navigation system which uses inertial instruments to measure angular and linear motion of moving vehicles in inertial space. It can accurately calculate the position, velocity and attitude angle of the carrier according to the differential equations of motion. Gyroscopes play an important role in inertial navigation systems. Gyroscope is the main tool for measuring angular velocity of rotation, which is characterized by its fixed axis and precession. General conventional gyroscopes and new atomic spin-gyroscopes, which are realized by the spin-precession of atoms under the action of a static magnetic field, have these properties. Based on the working principle of precession gyroscope, a preliminary scheme for measuring rotational frequency by molecular electric dipole moment precession under electrostatic field is presented in this paper. This paper first introduces the working principle of various precession gyroscopes, and then, based on the working principle of precession gyroscopes, puts forward a scheme of measuring rotational frequency by molecular electric dipole moment precession under the action of electrostatic field. The kinds of molecules needed for the scheme are analyzed and selected. The CH3F molecule is selected as the experimental molecule, and the classical and quantum images of its precession under electrostatic field are described in detail. At the same time, the physical process and physical quantity involved in the scheme are expounded. By analyzing the amplitude of molecular state induction electric field at room temperature, the molecular states J _ (6), K _ (6)? As the resonant molecular state in the experiment, the interference of other molecular states is restrained by increasing the electrostatic field intensity. Under the condition of electrostatic field of 5.0 脳 10 ~ 4 V / m, temperature of 300K, molecular density of 2.7 脳 1014cm-3, the precession frequency of Ch _ 3F molecule is 4.2 脳 10 ~ 2 MHz, the amplitude of inductive voltage is 10-6 V, and the detection sensitivity to rotation frequency can reach the level of 100Hz. In addition, if this scheme is used to measure the electric field, the precision of measuring the electric field can reach 0.07 V / m.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN96

【相似文獻】

相關(guān)碩士學(xué)位論文 前1條

1 張晶;分子電偶極矩進動研究[D];華中科技大學(xué);2014年

本文編號：1786566