| 嵌入式测试系统用高精度数控恒压恒流源 |
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| 引用本文： | 谢洲震,刘明明,柳静,马荣廷.嵌入式测试系统用高精度数控恒压恒流源[J].单片机与嵌入式系统应用,2018(6):65-68,73. |
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| 作者姓名： | 谢洲震 刘明明 柳静 马荣廷 |
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| 作者单位： | 中国计量大学 质量与安全工程学院,杭州,310018 |
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| 基金项目： | 浙江省大学生科技创新活动计划(新苗人才计划)2017R409029 |
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| 摘 要： | 针对电磁阀产品性能测试的需要,开发了一种基于DSPIC33EV128单片机的数控恒压恒流电源装置.采用UCC27211半桥驱动芯片,由精密采样电阻和AD8417组成精准的输出电流的高边采样,电阻串联分压反馈输出电压,单片机内部数字运用PI闭环算法.电源工作方式可由外部电位器或者采集卡AO模拟量控制,或是PC机串口协议控制,并通过串口上传当前实时电压电流值.实验测试显示,电流、电压调节精度可达1%F.S.
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| 关 键 词： | 数控恒压恒流 PI闭环调节 PIC单片机 DSPIC33EV128 AD8417 TPS5430 programmable DC power PI closed-loop adjustment PIC microchip DSPIC33EV128 AD8417 TPS5430 |
Design of Programmable DC Power Supply Used in Embedded System |
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| Xie Zhouzhen,Liu Mingming,Liu Jing,Ma Rongting.Design of Programmable DC Power Supply Used in Embedded System[J].Microcontrollers & Embedded Systems,2018(6):65-68,73. |
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| Authors: | Xie Zhouzhen Liu Mingming Liu Jing Ma Rongting |
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| Abstract: | Aiming at the requirements for performance testing of solenoid valve,a programmable DC power supply based on DSPIC33EV128 microchip is developed.Using the UCC27211 half-bridge drive chip,the precision sampling resistor and AD8417 are composed of the high-edge sampling of precise output current.The resistance series voltage feedbacks the output voltage,and the internal digital PI closed-loop algorithm is used in the microcomputer.The power working mode can be controlled by external potentiometer or acquisition card AO analog quantity,or PC serial port protocol control,and the current real-time voltage current value are uploaded via the serial port.The experimental results show that the accuracy of current and voltage regulation can reach 1%F.S. |
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