基于分布式DLL时序控制的高精度励磁电流控制系统设计OA
High-precision excitation current control system based on distributed DLL timing control
针对旋转变压器励磁电流峰值控制对高精度的需求,设计并实现了基于分布式延迟锁相环(DLL)时序控制的高精度励磁电流峰值控制系统.通过在芯片中集成7档低失调高带宽可编程增益放大器(PGA)、13位基于混合时序逻辑的逐次逼近型模数转换器(SAR ADC)、采用双极调制架构的12位数字正弦脉宽调制(SPWM)模块以及3组DLL时序控制电路,构建了完整的闭环励磁电流控制系统,实现了对励磁电流峰值的精确采样与动态调节.实验结果表明,本设计输出的PWM波形具有1.3 ns的分辨率,能够在400 mA目标电流下实现励磁电流峰值误差小于±0.934%,为旋转变压器励磁电流峰值控制问题提供了一个有效的解决方案.
To address the high-precision requirements for resolver excitation current peak control,this paper designs and implements a high-precision excitation current peak control system based on distributed Delay-Locked Loop(DLL)timing control.By integrating a 7-stage low-offset,high-bandwidth Programmable Gain Amplifier(PGA),a 13-bit hybrid-timing-logic-based Successive Approximation Register Analog-to-Digital Converter(SAR ADC),a 12-bit digital Sinusoidal Pulse Width Modulation(SPWM)module employing a bi-polar modulation architecture,and three sets of DLL timing control circuits on-chip,a complete closed-loop excitation current control system is constructed.This system achieves precise sampling and dynamic adjustment of the excitation current peak.The experimental results demonstrate that the designed PWM waveform output achieves a resolution of 1.3 ns and an excitation current peak error of less than±0.934%at a target current of 400 mA,providing an effective solution for resolver excitation current peak control.
张德文;张李晨曦;秦莉雅;张杰;张鸿
西安交通大学 微电子学院,西安 710049西安交通大学 微电子学院,西安 710049西安交通大学 微电子学院,西安 710049西安交通大学 微电子学院,西安 710049西安交通大学 微电子学院,西安 710049
信息技术与安全科学
励磁电流峰值控制PGA混合时序逻辑SAR ADC数字SPWM分布式DLL
excitation current peak controlPGAhybrid timing logic SAR ADCdigital SPWMdistributed DLL
《集成电路与嵌入式系统》 2026 (2)
24-33,10
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