Description: Linux下动态电源管理(Dynamic Power Management)的用户守护进程，可根据系统负载和运行程序情况自动调整。-Linux Dynamic Power Management (Dynamic Power Management) the user daemon, according to system load and operating procedures of the automatic adjustment. Platform: |
Size: 5120 |
Author:韦建利 |
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Description: 该设计采用的是NE5532芯片组成前置放大电路将输入正弦信号放大，实现负载输出功率大于等于5W的要求。通过分立MOS管组成的互补放大电路，增强功率放大和驱动能力，以驱动8Ω负载。功率放大器的输出功率、电源的供给率通过STC89C52单片机的中A/D转换器取样计算，从而得到整机效率，并显示在LCD的显示屏上。采用带阻滤波电路可以有效抑制交流电源对放大器的影响。该系统的设计实现了输出功率范围在10Hz—50KHz，功率大于5W的模拟信号，且误差在5 以内，信号无明显失真。-This design USES is composed NE5532 chip preamplifier circuit will input sine signal amplifier, realize the load power output is equal or greater than 5 W requirements. Through the division of MOS tube complementary amplifier circuit, enhance power amplifier and drive ability to drive eight Ω load. The power amplifier output power, power supply rate through the STC89C52 SCM in the A/D converter sampling calculation, and get the whole machine efficiency, and displayed on the LCD display. The band elimination filter circuit can reduce the ac power to the influence of the amplifier. The design of the system realized the output power range in 10 Hz ac-50 KHz, power is greater than 5 W analog signals, and the error within 5 and the signal no significant distortion. Platform: |
Size: 1024 |
Author:李雄亮 |
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Description: FEATURES
High Accuracy
0.1 Typical Error
High Speed
10 MHz Full-Power Bandwidth
450 V/ms Slew Rate
200 ns Settling to 0.1 at Full Power
Low Distortion
–80 dBc from Any Input
Third-Order IMD Typically –75 dBc at 10 MHz
Low Noise
94 dB SNR, 10 Hz to 20 kHz
70 dB SNR, 10 Hz to 10 MHz
Direct Division Mode
2 MHz BW at Gain of 1-FEATURES
High Accuracy
0.1 Typical Error
High Speed
10 MHz Full-Power Bandwidth
450 V/ms Slew Rate
200 ns Settling to 0.1 at Full Power
Low Distortion
–80 dBc from Any Input
Third-Order IMD Typically –75 dBc at 10 MHz
Low Noise
94 dB SNR, 10 Hz to 20 kHz
70 dB SNR, 10 Hz to 10 MHz
Direct Division Mode
2 MHz BW at Gain of 100 Platform: |
Size: 251904 |
Author:王刚 |
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Description: BER of QAM at Different bitrates, The
resulting bit error rate the Monte Carlo
simulation for the different QAM bit rates (4 to 1024) have been exported to the Matlab
workspace as a vector of error values for each bit rate versus the noise power spectral density (Eb/No) variations. The figure illustrates the fact that at higher transmission bit rates, the error in the received signal increases. Therefore, it becomes a tradeoff between the transmission speed and the accuracy of the transmitted data. The increase in the error or distortion in the received signal may add to the complexity of the receiver design in order to recover the original signal or information.-BER of QAM at Different bitrates, The
resulting bit error rate the Monte Carlo
simulation for the different QAM bit rates (4 to 1024) have been exported to the Matlab
workspace as a vector of error values for each bit rate versus the noise power spectral density (Eb/No) variations. The figure illustrates the fact that at higher transmission bit rates, the error in the received signal increases. Therefore, it becomes a tradeoff between the transmission speed and the accuracy of the transmitted data. The increase in the error or distortion in the received signal may add to the complexity of the receiver design in order to recover the original signal or information. Platform: |
Size: 1024 |
Author:Sami |
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Description: 本系统由SPWM信号的产生、逆变回路及其控制、欠压过流保护、键盘和显示等部分组成。选择DSP TMS320F28027芯片产生SPWM信号；逆变器主回路是由功率场效应晶体管构成的全桥逆变电路，其控制部分采用基于DSP控制的最大功率跟踪和输出电流跟踪控制策略，使逆变输出电流与参考信号同频同相；并从软硬件两方面进行输入欠压、输出过流保护，增强系统的稳定性和可靠性。对系统的转换效率、畸变率等各项指标的测试结果表明，本光伏并网模拟装置是比较稳定可靠的。(The system consists of SPWM signal generation, inverter circuit and its control, undervoltage over-current protection, keyboard and display and other parts. DSP TMS320F28027 chip select SPWM signal is generated; the inverter main circuit is full bridge inverter circuit is composed of power field effect transistor, the control part adopts DSP to control the maximum power tracking and output current tracking control strategy based on the inverter output current reference signal with the same frequency and phase; and the input voltage, output over-current protection from two aspects of hardware and software, to enhance the stability and reliability of the system. The test results of the system conversion efficiency, distortion rate and other indicators show that the photovoltaic grid connected simulation device is relatively stable and reliable.) Platform: |
Size: 23951360 |
Author:destyni
|
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Description: 用于消除电网中由非线性负荷导致产生的5/7次谐波，降低畸变率(Eliminate the 5/7 subharmonic in the power grid and reduce the distortion rate) Platform: |
Size: 27648 |
Author:左下角 |
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Description: 利用matlab编程对电能质量进行分析，包括电压有效值，频率，功率因数和谐波畸变率(The power quality is analyzed by MATLAB programming, including voltage effective value, frequency, power factor and harmonic distortion rate.) Platform: |
Size: 192512 |
Author:YJTyjt |
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Search - power-rate-distortion