current steering 中文意思是什麼
current steering
解釋
電流導引-
In this paper, ackerman steering linkage of double - wishbone suspension is taken as the study object, choosing the splitting joint and steering lever joint to carry out the design of optimization the mathematics models are established based on the multi - body system dynamics, applying its analysis method of kinematics to study the mechanism kinetic principles owing to more spatial factors considered, and calling off many hypotheses affecting the accuracy, compared with the traditional methods, the models are better to reflect the realistic motion principles, the results are more exact and applicable moreover, the force analysis is applied to the conduct mechanism the analysis method of dynamics in the multi - body dynamics is applied to study the forces applied on every component, working out the constraint reaction force of up and down ball joints, and developing the current computation program in the end, produce the upper wishbone geometry model in the ansys software package, meshing and carrying out the fea, testifying if the intensity of the wishbone meet with the requirements
本文以雙橫臂獨立懸架的轉向傳動機構作為研究對象，選擇對斷開點和節臂球銷的位置進行優化設計，在此基礎上建立了基於多體系統動力學的導向機構和轉向傳動機構的數學模型，運用該學科的運動學分析方法研究機構的運動規律，編制了通用優化設計軟體。由於考慮了更多的空間因素，取消許多影響準確性的假設，因此建立的數學模型與傳統的方法相比更能反映實際運動規律，得到的優化結果也更加精確實用。此外，本文還針對導向機構進行受力分析，在建立該機構的空間動力學模型后，運用多體動力學中的動力學分析方法研究各個桿件的受力，計算出上下球鉸的約束反力，並開發出了相應的通用計算程序。 -
In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane
本論文系統研究了自主式水下航行器的建模、非線性自適應滑模控制、以及深度調整和水平面導引方法等問題，具體成果和創新點如下1 、根據流體力學理論，建立了螺旋槳推進器的動態模型，它以螺旋槳來流速度v _ p和螺旋槳轉速n為狀態變量，以電機施加轉矩為輸入，螺旋槳推力t和轉矩q為輸出。 -
4ws ( four wheel steering ) is a new technology in vehicle systems. compared with the current 2ws ( two wheel steering ), 4ws has such advantages : when the vehicle turns at low velocity, it provides more smaller steering radius and improves the flexibility ; when the vehicle turns at high speed, it improves the operation stability
與二輪轉向汽車相比，四輪轉向汽車有如下優點：低速轉彎時，轉向半徑小，汽車的靈活性高；高速行駛時，能迅速改變車道，而車身又不致產生大的擺動，減少了擺尾產生的可能性，使司機更容易控制汽車的姿態。 -
A nonlinear ship steering controller is designed successfully. even considered the noises caused by wind, wave and current, the matlab simulation tracking error is almost zero. simulation results show that the presented algorithm is effective and robust
在存在舵機非線性和海浪干擾的情況下，分別跟蹤階躍響應及正弦曲線，航向跟蹤效果很好，幾乎無偏差跟蹤，且打舵小，具有較強的魯棒性。 -
In the second chapter, we firstly present a circuit of 8 - bit, 80mhz samples / s thermometer - decoded dac with hierarchical symmetrical switching sequences which will compensate gradient error, on the basis of 8 - bit dac, we then present high frequency, high definition 12 - bit, 80mhz samples / s current - steering dac
第二章：提出了具有梯度誤差補償的高速8位、 80mhz溫度計碼數模轉換器，並在此基礎上進一步提出了高速、高精度12位、 80mhz采樣率電流舵結構數模轉換器。 -
Design of a 8bit cmos current - steering dac
高速電流型數模轉換器設計 -
They are voltage scaling, current scaling and charge scaling. by compare, current scaling dac is the most fast and occupies the least area. the current - steering structure is a type of improved current scaling structure
傳統dac的轉換按其縮放方式進行分類，主要有:電流按比例縮放、電壓按比例縮放和電荷按比例縮放，通過比較可知，電流按比例縮放轉換速度快且佔用晶元面積小。 -
The directional routing protocol ds _ dsr put forward by the author is the improvement of the current protocol dsr, complete routine discovery and maintenance by directional neighbor nodes routing table, source routing and directional steering. the research discovers the application of the directional antenna, compare the omnidirectional antenna can increases the networks " total throughput, obviously reduces the co _ channel interference ( cci ), multiple access interference ( mai ), enlarges the nodes " signal and interference to noise ratio ( sinr ), and because of the high gain of directional antenna can realize the communication with farther distance and less jump, end to end delay can decrease deeply, simultaneously, security of networks can be improved partially, the node energy also can be saved easily by power control
本文提出的定向路由協議ds _ dsr是基於對現有協議dsr的改進下實現的，通過定向鄰節點路由表、定向源路由和定向搜索來完成路由發現與維護。研究發現，定向天線的應用，相比全向天線可明顯提高網路的總的吞吐量，減少通道干擾、多址干擾，提高信干噪比，且由於定向天線的高增益可實現較遠距離、較少跳數的通信，減少了路由發現時間，這樣大大減小了傳輸時延，網路的整體性能得到了不同程度的提高，同時部分地解決安全問題，通過功率控制還可較容易的實現節能的目的。 -
Current steering diode matrix
電流導引二極體矩陣 -
Comparing with voltage - domain d - a converter and charge - domain d - a converter, current - steering d - a converter has its high - speed superiority, which is only influenced by the speed of current switch. because the structure is based on current replication while not on current division, it can overcome the defects of current - domain d - a converter
電流舵型數模轉換器只受到電流開關速度的影響，相對于電壓型和電荷型結構具有高速的優勢，並且這種結構是基於電流復制而非電流劃分，可以很好地克服電流型結構的缺陷。 -
A 10bits, 200mhz segmented current - steering dac is designed with the top - down method, which can be applied to the video conversion system. high speed and low dissipation are reached. the traditional dac is classified into three sorts by scaling mode
本文研究了dac的設計原理和常用結構，並以實際應用為導向，按top - down的方法獨立完成了10bit ， 200mhz分段電流舵dac的設計。 -
In the seventh chapter, some of the above proposed new circuit, such as high frequency, high definition 12 - bit, 80mhz samples / s current - steering dac and fully differential r - mosfet - c bessel filter with accurate group delay, high accuracy bandgap reference and high drive capability cmos operational amplifier have been applied in communication gsm baseband i / o port integrated circuit, all the above blocks meet well with the design requirements of the system, and gain the better testing results, in the mean time, the above proposed high accuracy bandgap reference circuit als
第七章:將本文第二章提出的高速、高精度12位、 80mhz采樣率電流舵結構的數模轉換器和第五章提出的r一mosfet一c結構且具有精確群時延值的貝塞爾（ bessel ）濾波器以及第六章提出的高精度帶隙基準電壓源和高驅動能力全差分運算放大器電路應用於通信gsm基帶輸入/輸出埠晶元，滿足系統設計要求並取得了令人滿意的實測結果。 -
To obtain a high resolution cmos current - steering digital - to - analog conveter, the matching behavior of the current source transistors is one of the key issues in the design
在高速高精度電流型dac的設計中，電流源晶體管的匹配問題是設計的關鍵。 -
Mhz cmos dac current - steering 7 - bit 20 mhz cmos dac applied in transmitter of blue - tooth rf circuit
用於藍牙射頻晶元發送通道的電流驅動型7位20 -
A general introduction on digital - analog converter study of domestic and aboard is presented. dac principle and structures, and different converters such as current converting and voltage converting are analized. a 8 - bit high speed dac is designed. based on the study of binary weighted dac and thermometer - coded dac, a thermometer - coded current - steering dac is adopted
通過閱讀大量文獻，較為全面地概括了數模轉換器（ dac ）的國內外動態，介紹了dac的基本原理和結構，分析了dac主要誤差來源和模型，對幾種典型的dac結構進行了詳細的分析，並設計出一個8位高速dac 。
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