Description: 【摘 要】论文总结了ＣＤＭＡ通信系统功率控制的目的和方法，重点介绍了基于信噪比的功率控制算法，最后利用
ＭＡＴＬＡＢ工具，对开闭环结合的功率控制方法进行了仿真，给出了实验结果。
【关键词】
ＣＤＭＡ 功率控制 ＭＡＴＬＡＢ仿真
-Abstract paper summarizes the CDMA system power control method and the objective, focus on the signal-to-noise ratio on the power control algorithm, the final use of MATLAB tool outside the closed-loop power control with the simulation method, the experimental results are given. Key words : CDMA power control MATLAB Platform: |
Size: 346650 |
Author:古风 |
Hits:
Description: 摘要:功率控制是CDMA系统中的关键技术之一.本文利用SystemView软件对CDMA系统反向闭环
功率控制进行了仿真.结果表明,通过适当的功率控制算法可以在保证一定误帧率的基础上降低移
动台的发射功率,增加系统容量,并延长移动台电池的使用时间.
关键词:CDMA 功率控制 仿真-Abstract : Power Control in CDMA Systems is one of the key technologies. By using the SystemView software CDM A closed-loop system reverse power control the simulation. The results showed that through appropriate power control algorithm can guarantee that the error frame rate reduction on the basis of the mobile station transmitter power, increase the system capacity and extend the mobile battery usage time. Keywords : CDMA Power Control Simulation Platform: |
Size: 61440 |
Author:古风 |
Hits:
Description: 【摘 要】论文总结了ＣＤＭＡ通信系统功率控制的目的和方法，重点介绍了基于信噪比的功率控制算法，最后利用
ＭＡＴＬＡＢ工具，对开闭环结合的功率控制方法进行了仿真，给出了实验结果。
【关键词】
ＣＤＭＡ 功率控制 ＭＡＴＬＡＢ仿真
-Abstract paper summarizes the CDMA system power control method and the objective, focus on the signal-to-noise ratio on the power control algorithm, the final use of MATLAB tool outside the closed-loop power control with the simulation method, the experimental results are given. Key words : CDMA power control MATLAB Platform: |
Size: 346112 |
Author:古风 |
Hits:
Description: 本系统基于反馈控制思想，由交直流转换电路、DC-DC变换器、步进电路模块和显示模块4个模块电路构成开关稳压电源。交直流转换电路整流部分采用全波桥式整流电路形式，DC-DC变换器以TL494有主核心设计并加上简单滤波电路及RC放电回路所构成的回路控制器。它能把脉冲宽度变化的信号转换成与脉冲宽度成正比变化的直流信号，进而实现闭环单回路控制。由单片机控制
数字定位器X9241的电阻,进而控制输出电压。显示模块由LCD1602构成。
-Based on feedback control of the system of thought, from AC-DC converter circuit, DC-DC converters, stepper circuit module and display module 4 module circuit switching power supply. AC-DC converter circuit using full-wave rectifier part of the circuit form of bridge rectifier, DC-DC converter to TL494 have the main core of the design and add a simple RC filter circuit and discharge circuit posed by the loop controller. It can change the pulse width signals into changes with the pulse width is proportional to the DC signal, and thus realize the closed-loop single-loop control. By the single-chip microcomputer to control the number of locator X9241 resistance, thereby control the output voltage. LCD1602 constituted by the display module. Platform: |
Size: 52224 |
Author:苏永生 |
Hits:
Description: 本系统基于反馈控制思想，由交直流转换电路、DC-DC变换器、步进电路模块和显示模块4个模块电路构成开关稳压电源。交直流转换电路整流部分采用全波桥式整流电路形式，DC-DC变换器以TL494有主核心设计并加上简单滤波电路及RC放电回路所构成的回路控制器。它能把脉冲宽度变化的信号转换成与脉冲宽度成正比变化的直流信号，进而实现闭环单回路控制。由单片机控制
数字定位器X9241的电阻,进而控制输出电压。显示模块由LCD1602构成。
-Based on feedback control of the system of thought, from AC-DC converter circuit, DC-DC converters, stepper circuit module and display module 4 module circuit switching power supply. AC-DC converter circuit using full-wave rectifier part of the circuit form of bridge rectifier, DC-DC converter to TL494 have the main core of the design and add a simple RC filter circuit and discharge circuit posed by the loop controller. It can change the pulse width signals into changes with the pulse width is proportional to the DC signal, and thus realize the closed-loop single-loop control. By the single-chip microcomputer to control the number of locator X9241 resistance, thereby control the output voltage. LCD1602 constituted by the display module. Platform: |
Size: 50176 |
Author:苏永生 |
Hits:
Description: 本程序来自TI公司网站原程序,其功能是通过间接磁场定向的控制算法来实现对三相异步电机的控制, 程序的具体算法和介绍在软件压缩包有详细介绍！-This system simulates a sensored indirect field oriented control of 3-phase induction motor with an "emulated" 3-phase induction motor model. The motor speed is controlled by using measured speed as the speed feedback from the induction motor model. The control strategy can be evaluated on TMS320C280x controllers without any power inverter and real induction motor. The system consisting of digital motor control modules is gradually built up until the speed control loop is finally closed. The incremental builds are included in the software to confidently build up the system. Based on TMS320C280x™ /TMS320F280x™ DSP controllers.
Platform: |
Size: 4125696 |
Author:Charmaine |
Hits:
Description: Simulink and Stateflow model of IS-95A CDMA reverse traffic channel power control. Includes reverse traffic channel physical layer, together with open and closed loop algorithms for base station and mobile implemented as state machines with Stateflow.
MATLAB 6.5 (R13) Platform: |
Size: 97280 |
Author:Rafal |
Hits:
Description: 此开关稳压电源由AT89S52单片机作为控制核心。系统包括AD采样，PID控制，PWM输出，构成闭环系统。交流电源输入到整流模块，经整流滤波后输出平稳的直流电压。该直流电压直接输出至IGBT全桥变换器模块。高精度AD转换器将后端输出的电压电流信号由模拟信号量变为数字量供给单片机进行数字PlD运算，经过PID控制运算后，由控制模块输出PWM调制波形至IGBT栅极，构成一个闭环系统，控制电压稳定输出，从而实现开关稳压电源控制系统。此外，可由键盘输入欲得电压值，从LCD显示实际电压值，人机交互界面友好。-This switching power supply control by the core as a single-chip AT89S52. AD sampling system, PID control, PWM output, constitute a closed-loop system. AC power input to the rectifier module, after filtering by the rectifier output DC voltage stable. The output DC voltage directly to the IGBT full-bridge converter modules. Precision will be the back-end AD converter output voltage and current signals from the analog signal into a digital quantity to supply the number of single-chip computing PlD, after PID control algorithms, the control module from the output PWM waveform modulation IGBT gate to form a closed-loop system, the control voltage output, in order to achieve switching power supply control system. In addition, by欲得keyboard input voltage from the LCD displays the actual voltage value, user-friendly human-computer interaction. Platform: |
Size: 46080 |
Author:周陶钧 |
Hits:
Description: 1、基于Ip/Iq方法控制PWM整流器，实现有功无功解耦控制，实现直流电容的稳压控制。
2、分别采用滞环电流和电压空间矢量技术进行PWM调制
3、DSTATCOM无功补偿仿真验证
4、系统采用了在带有前馈解耦控制的基础上产生的电压电流双闭环控制结构，其中电压外环保证了稳定的直流输出，电流内环提高了电流的动态响应速度，并且这种控制方法使电流的相位和输入电压的相位保持一致。-1, based on Ip/Iq way to control the PWM rectifier to achieve the active and reactive decoupling control of DC capacitor voltage control. 2, respectively, using hysteresis current and voltage space vector PWM modulation technique 3, DSTATCOM reactive power compensation simulation 4, the system used in the decoupling control with feed-forward on the basis of the voltage and current double closed-loop control structure, in which voltage outer ring to ensure a stable DC output, current inner improve current dynamic response, and this control method makes the current phase and the phase of the input voltage is consistent. Platform: |
Size: 59392 |
Author:有梦最美 |
Hits:
Description: A closed-loop power control system
having both fixed-step and adaptive-step power
control algorithms and incorporating with
multitap RAKE receivers was proposed.
Simulations were performed for wide-band radio
channels having path loss, slow fading, and fast
fading. As the measurement of the received power
and the bit energy-to-interfkrence power spectral
density ratio play an important role in a CDMA
power control system, a scheme to estimate these
two parameters was proposed. For a Rayleigh
fading channel and a Rician fading channel
having a K factor of 6dB, a three-tap RAKE
receiver is desirable. Platform: |
Size: 53248 |
Author:nani |
Hits:
Description: We propose a discrete nonlinear controller, developed
in a synchronous frame, for a parallel three-phase boost
converter consisting of two modules. The basic idea, however, can
be extended to a system with modules. Each of the closed-loop
power-converter modules operates asynchronously without any
communication with the other modules. The controller stabilizes
the currents on the -axes and limits the flow of the pure-zero
sequence current. It combines the space-vector modulation
scheme with a variable-structure control, thereby keeping the
switching frequency constant and achieving satisfactory dynamic
performance.
Index Terms—Discrete nonlinear controller, modules, parallel
multiphase converters, space-vector modulation, switching
frequency, synchronous frame, three-boost converters, variablestructure Platform: |
Size: 1159168 |
Author:imed |
Hits:
Description: 一种基于PID闭环控制算法的串联型开关稳压电源的设计，附有电路仿真图以及相关程序，只要在电脑上安装好相关软件解压后就可以马上运行仿真，，，是上个月刚完成的课程设计。保证能用-PID closed-loop control based on tandem-type switching power supply design algorithms with circuit simulation diagrams and procedures, as long as the software is installed on the computer after decompression can immediately run a simulation,,, just completed last month curriculum design. Platform: |
Size: 818176 |
Author:叶彩 |
Hits:
Description: Active Harmonic Filtering Using Current Controlled Grid-
Connected DG Units with Closed-Loop Power Control Platform: |
Size: 625664 |
Author:Haja |
Hits:
Description: 应用MC33035、MC33039、IGBT专用驱动模块2ED300C172-S、IGB T 功率模块FF450R12IE4以及带有 CAN (controllers area network) 接口的PIC18F458 单片机构成360V无刷直流电机闭环调速控制与通信系统 ,该电机控制器能够实现对120 kW无刷直流电机的闭环控制 , 具有过电流、欠压、过热等保护功能. 另外,还提出了CAN总线通信方案-Application of MC33035, MC33039, IGBT driver module 2ED300C172-S, T IGB power module FF450R12IE4 and PIC18F458 (area network controllers) interface of CAN microcontroller 360V brushless DC motor closed-loop speed control and communication system, the motor controller can achieve the 120 kW brushless DC motor closed-loop control, with over current, under voltage, over heat, etc. Platform: |
Size: 248832 |
Author:张平 |
Hits:
Description: MATLAB仿真IS-95开环闭环功率控制 制问题,包括基站以及移动台的功率-MATLAB simulation IS- 95 open loop system of closed loop power control problems, including the power of base station and mobile station Platform: |
Size: 74752 |
Author:QH_665 |
Hits:
Description: MATLAB simulation IS - 95 open loop system of closed loop power control problems, including the power of base station and mobile station Platform: |
Size: 73728 |
Author:Whlbur
|
Hits:
Description: Sinusoidal charging can ideally reduce the need for DC
link capacitance due to its ripple-power balancing action
between the input and output of the battery charger. Platform: |
Size: 834560 |
Author:hotre
|
Hits:
Search - closed loop power control