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旋变 AD2S1205 设计手册 resolver (2)

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GLOBAL_Q
FilterTheta1 Filtered atan(sin/cos)
GLOBAL_Q
FilterTheta2 Filtered atan(cos/sin)
GLOBAL_Q
ElecTheta Electrical angle before comp.
GLOBAL_Q
MechTheta Mechanical angle before comp.
_iq FilterTheta2; // Variable Mechanical angle by filtered cos/sin signal (pu)
Uint32 DemodConst; // Variable: Downsampling by factor K
_iq SignalGain;
// Parameter: Sin and cos gain (pu)
RESOLVER
Description
Position and Speed Calculations for Resolver Sensor
This software module calculates the rotor position and motor speed based on two resolver signals (i.e., sin and cos signals).
80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF 80000000-7FFFFFFF
// Variable: Filtered cos signal (pu)
_iq DemodSin;
// Variable: Demodulated sine signal (pu)
_iq DemodCos;
// Variable: Demodulated cos signal (pu)
_iq PreviousSin[18]; // History: Past sine signals (pu)
Uint32 BaseRpm; // Parameter: Base speed in rpm (Q0)
_iq21 K1;
// Parameter: Constant for differentiator (Q21)
int32 SpeedRpm; // Output : Motor speed in rpm (Q0)
_iq SinIn;
// Input: Measured sine signal (pu)
_iq CosIn;
// Input: Measured cos signal (pu)
_iq FilteredSin;
// Variable: Filtered sine signal (pu)
_iq FilteredCos;
1
Texas Instruments
C Interface
C Interface
Object Definition The structure of RESOLVER object is defined by following structure definition
typedef struct {
• Each pre-initialized “_iq” RESOLVER structure consumes 157 words in the data memory
□ Code size mentioned here is the size of the calc() function
Digital Control Systems (DCS) Group
_iq ElecTheta;
// Variable: Electrical angle before angle compensation (pu)
_iq MechTheta;
// Variable: Mechanical angle before angle comp. (pu)
_iq Speed;
// Variable: Sign change of FilterTheta (pu)
Uint32 OldSignFlag; // History: Sign change of FilterTheta at previous step (pu)
_iq CalibratedAngle; // Parameter: Offset between resolver's signal & winding (pu)
GLOBAL_Q GLOBAL_Q
SpeedGain Speed calculation gain
GLOBAL_Q
PolePairs Number of pole pairs
Q0
BaseRpm Base speed in rpm
Q0
K1
Constant for differentiator
Q21
CalibratedAng Offset between resolver’s signal
_iq SpeedGain;
// Parameter: Speed calculation gain (pu)
Uint32 CounterMax; // Parameter: Maximum count for finding zero crossing (Q0)
_iq AmplifiedSin; // Variable: Amplified sine signal (pu)
// Output: Speed in per-unit (pu)
_iq OldTheta;
// History: Mechanical angle at previous step (pu)
Uint32 PolePairs; // Parameter: Number of pole pairs (Q0)
SinIn CosIn
pu OutputTheta
pu RESOLVER pu Speed
pu
Q0 SpeedRpm
Availability Module Properties
This IQ module is available in one interface format: 1) The C interface version Type: Target Independent, Application Dependent Target Devices: x281x or x280x C Version File Names: resolver.c, resolver.h IQmath library files for C: IQmathLib.h, IQmath.lib
Uint32 SignalCounter; // Variable: Sign change counter 0-3 (Q0)
_iq RefTheta;
// Variable: Filtered mechanical angle before angle comp. (pu)
Uint32 SignFlag;
DemodCos Demodulated cos signal
GLOBAL_Q
AmplifiedSin Amplified sin signal
GLOBAL_Q
AmplifiedCos Amplified cos signal
GLOBAL_Q
FilterTheta FilterTheta1 – FilterTheta2
GLOBAL_Q
RefTheta
Filtered mechanical angle before compensation
GLOBAL_Q
SignFlag
Sign change of FilterTheta
Q0
SignalCounter Sign change counter
Q0
*GLOBAL_Q valued between 1 and 30 is defined in the IQmathLib.h header file.
Format*
GLOBAL_Q GLOBAL_Q GLOBAL_Q
Speed
Motor speed in pu
GLOBAL_Q
SpeedRpm Motor speed in rpm
Q0
RESOLVER parameter
FilterGain[18] SignalGain
Low-pass filter gains (FIR 17order, Hamming windows) Sin and cos gain
void (*calc)();
// Pointer to the calculation function
} RESOLVER;
// Data type created
typedef RESOLVER *RESOLVER_handle;
Digital Control Systems (DCS) Group
Uint32 ThetaCounter; // Variable: Counter for finding zero crossing (Q0)
Uint32 ThetaCounterMax; // Variable: Maximum counter for finding zero crossing (Q0)

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旋转变压器数字转换器AD2S1205在电机转子位置检测中的应用

旋转变压器数字转换器AD2S1205在电机转子位置检测中的应用

ｐ ｅ ｒ ｍａ ｎ ｅ ｎ ｔ ｍａ ｇ ｎ ｅ ｔ ｓ ｙ ｎ ｃ ｈ ｒ ｏ ｎ ｏ ｕ ｓ ｍｏ ｔ ｏ ｒ ｒ ｏ ｔ ｏ ｒ ｐ ｏ ｓ ｉ ｔ ｉ ｏ ｎ ｄ ｅ ｔ ｅ ｃ ｔ ｉ ｏ ｎ ． Ｋｅ ｙ ｗｏ ｒ ｄ ｓ ： ｒ ｅ ｓ ｏ ｌ ｖ ｅ ｒ ； ＤＳ Ｐ； ｄ ｉ ｇ ｉ ｔ ａ ｌ ｅ ｏ ｎ ｖ ｅ ￣ ｅ ｒ ； ｐ ｅ ｒ ｍａ ｎ ｅ ｎ ｔ ｍａ ｇ ｎ ｅ ｔ ｓ ｙ ｎ ｃ ｈ ｒ ｏ ｎ ｏ ｕ ｓ ｍｏ ｔ ｏ ｒ ； ＡＤ ２ Ｓ １ ２ ０ ５
敖 杰， 刘永 强
５ １ ０ ６ ４ ０ ） （ 华南理工大学电力学院 ， 广 东广 州
摘要 ： 文 中介 绍 了一种 永磁 同步 电 机 转 子 位 置 检 测 方 法 ， 使用 Ｄ Ｓ Ｐ的 并 口模 拟 Ｓ Ｐ Ｉ 读取 Ａ Ｄ ２ Ｓ １ ２ ０ ５转 换 的 位 置 信 息 。
Ａ Ｄ ２ Ｓ １ ２ ０ ５是 最新 的单芯片旋变数 字转换器 ， 将 旋转 变压 器输 出的模 拟信号 转化 为数 字信 号 。文 中阐述 了旋转 变压 器、 Ａ Ｄ ２ Ｓ １ ２ ０ ５的工作原理及 其信 号引脚 ， 结合 Ｔ ＭＳ ３ ２ ０ Ｌ Ｆ ２ ４ ０ ６ Ａ， 给 出了一 种永磁 同步 电机 转子位 置检测的 通讯接 口方 法及
应用示例。
关键词 ： 旋 转变压器 ； Ｄ Ｓ Ｐ ； 数字转换 器； 永磁 同步电机 ； Ａ Ｄ ２ Ｓ １ ２ ０ ５ － － 中图分类号 ： Ｔ Ｍ３ ０ １ ． ２ ； Ｔ Ｍ ３ ５ １ 文献标识码 ： Ａ 文章编号 ： １ ０ ０ ２—１ ８ ４ １ （ ２ ０ １ ３ ） ０ ５—０ ０ ２ ５— ０ ４
０ 引 言
文 中主要论述 了使用旋转 变压器及其转换器 Ａ Ｄ ２ Ｓ １ ２ ０ ５检
永磁同步电机旋转变压器解码算法优化设计

永磁同步电机旋转变压器解码算法优化设计

永磁同步电机旋转变压器解码算法优化设计马利娇，贾欣&,陈少华（北京信息科技大学仪器科学与光电工程学院，北京100192）摘要：针对旋转变压器解码电路误差对永磁同步电机（PMSM ）转子位置检测精度的影响，深入分析了解码电路工作 ，基 度/速度观测器， 了 高精度快响应的旋转变压器信 方法。

电路采用低电压运放MCA33202对旋变输出正弦和余弦信号进行解码，基于解码后的估算角度构建了单位反馈闭环系 ，优化了解码电路关键器，提高了 PMSM 转子位置检测精度。

通1台2.5 kW 高速PMSM 了该的有效 。

关键词：永磁同步电机；旋转变压器；观测器；解码电路；位置检测精度中图分类号：TM 341文献标志码：A文章编号：1673-6540（2021）02-0031-05doi ： 1052177/emca.2020.187Optimal Design of Resolver Decoding Algorithm for Permanent MagnetSynchronous Motor *收稿日期：2020-11-02；收到修改稿日期：2020-12-E4*基金项目：国家自然科学基金项目（62003047）；北京市委组织部骨干人才项目（2018000020124+103） 作者简介：马利娇（1995-），女,硕士研究生,研究方向为永磁电机控制’陈少华（1985-），男，博士,副教授，研究方向为高速电机控制、高效电力变换’（通信作者）MA Lijiao ， JIA Xinyu ， CHEN Shaohua(School of Instrument Scienca and Opto-Electronica Engineering ，Beijing InformationScienca & Technology University ，Beijing 100192，China)Abstrach : The erroo of resolves decoding circuit has effect on the rotoo position detection accuracy of permanent magnet synchronous motoe ( PMSM). In ordee to reducc tie inOuencc ，the principle of decoding circuit ir analyzed.A decoding circuit with the advantaaes of high precision and fast response is proposed. The low voVage operationaVamplifier MCA33202 is used t 。

低成本实用型旋转变压器解码系统设计

低成本实用型旋转变压器解码系统设计

低成本实用型旋转变压器解码系统设计作者：张伟鹏杨瑞峰郭晨霞来源：《现代电子技术》2020年第09期摘; 要：目前，测量角位移的光电码盘体积大而且对使用环境要求苛刻，不适用于某些特殊场合，如果直接使用旋转变压器测量，又因为其输出信号中混合有许多杂波信号，所以给精确解码造成了很大困难。

因此，设计通过使用AD公司的专用解码芯片AD2S1210配合STC89C52单片机以及外围的调理电路、滤波放大电路等构成的旋转变压器角位移测量系统来满足工程中角位移测量精度高的需求。

通过搭建角位移测量系统的实验平台对实验数据进行分析后，得出最终解码角度误差可达到0.055°，可满足一般的应用需求，具有较高的实际应用价值。

关键词：角度跳变; 角位移测量; 巴特沃斯滤波; 光电编码器; 闭环角度跟踪法; 角度解算中图分类号： TN76⁃34; TM383.2; ; ; ; ; ; ; ; ; ; 文献标识码： A; ; ; ; ; ; ; ; ; ; 文章编号：1004⁃373X（2020）09⁃0154⁃03Design of decoding system for low cost practical rotary transformerZHANG Weipeng， YANG Ruifeng， GUO Chenxia（School of Instrument and Electronics， North University of China， Taiyuan 030051，China）Abstract： At present， the photoelectric code disc used to measure the angular displacement is large and demanding in service environment. Therefore， it is not suitable for some special occasions. However， if the resolver is directly used to measure the angular displacement， it is very difficult to decode accurately because of the clutter signals mixed in the output signal. Thus， in this design，the resolver angular displacement measurement system composed of AD2S1210 special decoding chip of AD company in combination with SCM STC89C52， as well as peripheral conditioning circuit and filter amplifier circuit， is used to meet the need of high precision of angle displacement measurement in engineering. The experimental platform of angle displacement measurement system is built and the experimental data are analyzed. It shows that the final decoding accuracy can reach 0.055°， which can meet the general application requirement. Therefore， it has a high value in the practical application.Keywords： angle jump; angle displacement measurement; Butterworth filter; photoelectric encoder; closed?loop angle tracking method; angle solution0; 引; 言在伺服控制的许多领域需要角位移传感器来获取轴角位移，而大多数获取轴角位置的传感器分为光电编码器、磁编码器。

基于AD2S1210的旋变解码电路设计

基于AD2S1210的旋变解码电路设计

基于AD2S1210的旋变解码电路设计刘芸邑;郑婕;李燕;田桂平;魏伟;陈洁【摘要】This paper introduces a resolver decoding circuit based on the position detection of a step-stare panoramic imaging platform. Through the use of AD2S1210(revolving transformer/digital converting IC produced by ADI), to decode the resolver J78XFS009, a decoding circuit is designed. The design includes the basic working of ADS2S1210, the interface circuit and the connecting circuit between the micro-controller and resolver and so on. The whole circuit has the advantages of simple structure, high reliability, working stability, high precision and better noise immunity, etc. It can be used under harsh environments, so it has high value of practical use. The experimental results show that the circuit can detect the position signals of the DC motor accurately, so it can contribute to achieve a more precise closed loop control of DC motors.%介绍了在步进凝视扫描成像平台的位置检测中，传感器的解码电路。