Description: 本设计以ATMEL公司生产的AT90S8515作为控制核心，实现输出电流的数字控制，巧妙地利用4通道8位D/A转换芯MAX505转换芯片来完成16位的转换精度，D/A转换芯片输出的电压量经过一个压流变换电路变换成电流量的输出。再通过12位A/D转换芯片MAX197实现输出数据的反馈采集，形成输出电流的闭环控制，以此来达到较高的控制精度。-design ATMEL the company's core AT90S8515 as the control, Implementation of output current digital control, clever use of a 4-channel 8-bit D / A converter chip core MAX505 conversion to complete 16 of conversion accuracy, D / A converter output voltage chip volume flow through a pressure converter transform into CURRENT output. Again through 12-bit A / D converter chip MAX197 feedback output data collection, output current form of closed-loop control, in order to achieve higher accuracy. Platform: |
Size: 122960 |
Author:刘涛 |
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Description: 本设计以ATMEL公司生产的AT90S8515作为控制核心，实现输出电流的数字控制，巧妙地利用4通道8位D/A转换芯MAX505转换芯片来完成16位的转换精度，D/A转换芯片输出的电压量经过一个压流变换电路变换成电流量的输出。再通过12位A/D转换芯片MAX197实现输出数据的反馈采集，形成输出电流的闭环控制，以此来达到较高的控制精度。-design ATMEL the company's core AT90S8515 as the control, Implementation of output current digital control, clever use of a 4-channel 8-bit D/A converter chip core MAX505 conversion to complete 16 of conversion accuracy, D/A converter output voltage chip volume flow through a pressure converter transform into CURRENT output. Again through 12-bit A/D converter chip MAX197 feedback output data collection, output current form of closed-loop control, in order to achieve higher accuracy. Platform: |
Size: 122880 |
Author: |
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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 |
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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 |
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Description: 介绍了一种闭环智能数控直流电流源的设计原理和实施方案，该方案采用自行设计制作的高精度电压源，利用单片机、PWM和运算放大器构成A/DD/A转换器来控制场效应管导通状态的原理，达到了输出恒流的目的。整个系统采用89C58单片机作为主控部件，将预置电流值数据送入D/A转换器，经硬件电路变换为恒定的直流输出，同时使用采样电阻将实际输出电流转换成电压送入A/D转换器，并将其反馈到单片机中构成闭环系统，进而实现预设值和实际值的比较，再通过调整D /A转换器输出的电压来改变场效应管的导通状态，减小了实际值与预设值之间的误差，实现了电流可预置、可步进调整、输出的电流信号可直接数字显示的功能。采用硬件闭环、软件闭环、软件实时积分、实时滤波的方法，锁定输出电流，从而实现了高精度恒流源的目的。此次所设计的电流源具有精度高、结构简单、工作稳定、操作方便、成本低廉、带负载能力强等优点-The scheme adapts high precision voltage source designed by ourselves Micro Control Unit (MCU) D/A converter and amplifier to control the transmitting state of field effect transistor which attains constant current. The system adapts MCU 89c52 as main control part the output current is transformed into the voltage by sample resistant and the voltage is sent to D/A converter and then sent to the MCU compared with the setting current. If there exist errors we should adapt D/A converter output and change the transmitting state of field effect transistor. The actual value is directed to the setting value. The direct current reaches the constant value. The closed loop control and PID arithmetic is used to realize high precision and wide range in the software design part. The intelligent current source realizes that the output current can be preset adjusted step by step and displayed in digit directly. Above functions are operated by keyboard within the current source. The stability of this Platform: |
Size: 2048 |
Author:zhendongzhao |
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Description: 采用STC89C52单片机作为系统的核心控制器件，利用定时中断，对任务设计了不同的响应频度，CPU分别执行各任务。用这种任务抢占思想构建的程序框架，实现各模块功能，实现了电压可控的恒定直流稳压电源设计。采用10位的AD1543和 DA5615，实现高精度输出与测量；通过闭环控制，使输出电压稳定；显示模块采用了WM-C1602N液晶显示模块，人机界面友好。该系统采用市电变压供电，由单片机控制模块、AD转换模块、DA转换模块、稳压电路、键盘输入模块与显示模块组成，具有高精确输出直流电压功能，测量精度高、抗干扰能力强等特点。-STC89C52 system used as the core of single-chip microcomputer control devices, the use of regular interruption of tasks designed to respond to different frequency, CPU implementation of the tasks, respectively. This task to build process to seize the ideological framework for the realization of the modules to achieve a controllable constant voltage DC power supply design. 10-bit AD1543 and DA5615, to achieve high-precision measurement of output through closed-loop control, so that the output voltage stability display module using the WM-C1602N liquid crystal display module, a friendly man-machine interface. The system uses a municipal electric transformer power supply, by the single-chip control module, AD converter, DA converter, voltage regulator circuits, the keyboard input module and display module with high-precision DC voltage output function, high precision measurement, features such as anti-interference ability. Platform: |
Size: 67584 |
Author:john |
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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 |
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Description: 有些实际应用中可能用的C原码,希望对大家有所帮助:(1)并行接口电压输出型DA转换器的控制(2)并行接口电流输出型DA转换器的控制(3)串行接口电压输出型DA转换器的控制(4)5I2C接口的AD及D A转换器的应用(5)基于AD9850的数字信号发生器(6)直流电机的开环控制(7)直流电机的闭环控制-Some practical applications may be used in the original C code, we want to help: (1) parallel port voltage output type DA converter control (2) parallel port current-output type DA converter control (3) serial interface Voltage output type DA converter control (4) 5I2C interface AD and DA converter applications (5) is based on AD9850 digital signal generator (6) open-loop DC motor control (7) closed-loop DC motor control Platform: |
Size: 124928 |
Author:hdm |
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Description: these excellent buck converter topology of closed loop which was built was built in simulink. Platform: |
Size: 11264 |
Author:suresh |
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Description: simulink model of dc to dc boost converter. the important thing it is in closed loop using p i controller. it is for study purpose-simulink model of dc to dc boost converter. the important thing it is in closed loop using p i controller. it is for study purpose.. Platform: |
Size: 11264 |
Author:srv |
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Description: simulink model of zeta converter. the important thing it is in closed loop using p i controller. it is for study purpose-simulink model of zeta converter. the important thing it is in closed loop using p i controller. it is for study purpose.. Platform: |
Size: 11264 |
Author:srv |
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Description: 该逆变器采用spwm控制方法进行电压闭环控制，成功将直流逆变为三相交流。本模型在matlab2014版本上已验证。(The inverter uses spwm control method to realize the voltage closed-loop control, and inverts the DC to three-phase AC successfully. This model has been verified in matlab2014 version.) Platform: |
Size: 29696 |
Author:maotao2013
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