GETTING START WITH GiantNEO

Author: Tom Tang

Email: [e-mail]

Twitter: @weipo_tang

Description

It is a modified InstaSPIN-FOC project for indoor smart bike trainer. The whole system is based on the open source project "InstaSPIN-FOC" from TI under BSD licience. This project presents a impedance control struct which included a PI-type torque observer and a impedance reference model. By all this skills, we can simulate the inertia and friction of flywheel by PMSM which we call it "electronic flywheel".

For more info. about smart trainer.

• The GIANT instaspin application guide
• GARMIN訓練台
• CYCLPLUS訓練台

我的開發環境

• 開發板 TI F28069M

  附帶XDS100 v2電路 使用JTAG介面對TI F28069M燒錄

• 開發環境 Windows + CCSTUDIO + git bash

• Compiler TI C2000 ccs1220

• 所有硬體設備

A QUICK START

1. 下載並安裝 TI CCSTUDIO and GIT for windows

2. 打開git bash

   ​​​​mkdir GIANT #想存放的目錄
   ​​​​cd GIANT
   ​​​​git clone [e-mail]:TomT0329/GiantNEO.git
   ​​​​cd GiantNEO/
   

3. 打開Code Composer Studio->project->import CCS projects

   Select the “ccs” folder at the appropriate MotorWare revision, board and MCU target combination to import all projects for these labs.: Ex: C:\ti\motorware\motorware_1_01_00_18\sw\solutions\instaspin_foc\boards\drv8301kit_revD\f28x\f2806xF\projects\ccs

   Do NOT select Copy the projects into the workspace work out of the parent ti\motorware\motorware_#####_## directory

4. Make sure all the signals are functional

   • SVPWM 6pins
   • ADC include current volatge total 6pins
   • two Potentialmeter check DC source and two signals pins
   • The 7th switch control signal 1pin and DC source for the 7th gatedrive
   • Motor three phase
   • Energy resistor
   • DCBUS(48V)
   • UART tx rx 2 pins
   • The USB port to your computer

5. Navigate to proj_lab21.c and user.h. Check the defines in the user.h. it should be look like picture below at first.

   MW_DRIVER為EMTRC開發的驅動版，目前開發中。

6. Build, debug and reset the program under CCS

7. Open Scripting console and load proj_lab21.js

   "D:\GIANT\GiantNEO\motorware\motorware_1_01_00_18\sw\solutions\instaspin_foc\src\proj_lab11.js"

8. Set gMotorVars.Flag_enableSys = 1 gMotorVars.Flag_Run_Identify =1

9. You are ready to go. you can also use scope to check dcbus voltage, motor phase current and the 7th switch control signal.

10. Any update of the projects, EX: new comment message, new function …etc. git commit -a in the git bash and write your commit.

    How to write the commits

11. git push push ur code to the github.

    U can git log to check the commit message

Motor drive/control HARDWARE

電路原理，專案需要操作在動力機與發電機模式，當處在發電機模式會有回升電壓，因此電路架構方面需增加7th開關與功率電阻。

• Drive board DRV8300DRGE-EVM & The 7th switch

input voltage	output current	software current limit
6V - 100V	30A (phase peak)	25A

DRV8300DRGE-EVM mouser

The 7th switch

• DRIVE BOARD FROM EMTRC

TO be continue…

電路板規格

NEO規格

發電機模式

DC電壓	DC電流	Phase current(Peak)	功率
110V	20A	85A	2.2kW

$$\mathrm{輸}\mathrm{出}\mathrm{功}\mathrm{率}=85Nm\times (\frac{250RPM}{60})\times 2\pi \cong 2.2kW$$

電動機模式

DC電壓	DC電流
48V	1.5A

EMTRC規格

發電機模式

DC電壓	DC電流	Phase current(Peak)	功率
80V	20A	61A	1.6kW

$$\mathrm{輸}\mathrm{出}\mathrm{功}\mathrm{率}=60Nm\times (\frac{250RPM}{60})\times 2\pi \cong 1.6kW$$

電動機模式

DC電壓	DC電流
48V	1.5A

1. 發電機模式 DCBUS 80V
2. 功率電阻4歐姆
3. 最大功率1.6kW
4. DC 20A

TI公版規格

發電機模式

DC電壓	DC電流	Phase current(Peak)	功率
48V	10A	25A	600W

$$\mathrm{輸}\mathrm{出}\mathrm{功}\mathrm{率}=25Nm\times (\frac{250RPM}{60})\times 2\pi \cong 600W$$

電動機模式

DC電壓	DC電流
48V	1.5A

TI InstaSPIN-FOC base feature

1. Sensorless motor drive

All labs are using sensorless control methods

include Sliding mode and High Frequency Injection.

PMSM Sensorless FOC

2. Motor Parameter IDentify

• LAB 2 Electrical parameter ID can ID Ld, Lq, Rs and lambda
• LAB 5C Physic parameter ID can ID Inertia(J) and Friction(B)

參數ID原理可參考The GIANT instaspin application guide

3. Inverter Verifercation

• LAB 1a CPU and INVERTER setup
• LAB 1b Open loop control(V/F control) for hardware integrity verification
• LAB 1C Closed current loop for signal chain verification

4. Auto ADC offset calibration

LAB3 ADC offset calibration

5. PMSM CURRENT LOOP CONTROL

LAB04 iq電流命令為馬達的line2line電流peak值。 id電流命令可進行flux weaking控制

6. PMSM SPEED LOOP CONTROL

LAB05b Speed mode and tuning speed PI

7. IQ math optimization

當我們可以確定每個方塊輸入與輸出的數值範圍後，透過TI所提供的IQLIB，我們可以挑選合適的IQ值，對程式碼進行精確度和速度的優化，甚至在整個專案中使用多種不同的IQ值，更進一步優化程式。

TI IQ LIB

8. DC bus comp and angle Delay Comp

DC bus comp

keeps the proper voltage output on the inverter regardless of the actual Bus. To explain the effect, if you have a nominal 350V bus, and your algorithm determines it needs 300V, it may produce a duty cycle of 85.7%. With DC Bus compensation you are measuring the actual bus, so that if the bus is actually 325V, and you still want the 300V output, you produce 92.3% duty cycle.we get this effect not by directly changing the duty cycle - which can be unstable and saturate - but by scaling the proportional gain of the current controllers.

angle Delay Comp

The angleDelayComp function compensates for the delay introduced from the time when the system inputs are sampled to when the PWM voltages are applied to the motor windings.

9. USER_checkForErrors

Checks for errors in the user parameter values.

10. Advance feature

• LAB07 Rs Online calibration

• LAB 11b Vibration Compensation

• LAB 9 field weakening(弱磁控制)

• LAB 10-a over-modulation

• LAB 10-e Flying start

• LAB 10-d dual motor control

• LAB 05d e f SpinTAC Speed Controller

  弱磁控制 over-modulation

Something Special in LAB 21 and LAB 11

6種模式切換

LAB 11	LAB 21
Sliding mode	HFI + Sliding mode
SPEED主動模式	SPEED主動模式
CURRENT阻力模式	CURRENT阻力模式
REFERENCE阻力模式	REFERENCE阻力模式
DCBUS保護(60V)	DCBUS保護(60V)

1. impedance/Admittance control

實現訓練台核心演算法IMPEDANCE CONTROL。

阻抗控制簡介

2. Customized USER.H

對原本的user.h進行修正，可方便使用者任意更換驅動版與馬達。

3. USART

USART communicate with computer.

輸出絕對角度與扭矩，量化騎乘路感，以提供開發者不同的路感設計。

UART with RPI3 and serial plot

4. PID type controller implement in C

系統皆為一階系統，提供PID控制器C語言實現方法，專案中提供Torque observer and Reference model，未來使用者能根據自己的需求實現更多一階PID控制器。

控制系統基礎複習

5. DCBUS Regulate

提供dcbus regulate fun提供直流電壓保護功能與直流電壓控制功能，使系統能夠操作在發電機模式。

Development environment

1. Add .gitignore to only track .c and .h files
2. Add USART function in LAB11 and LAB21 only for debugging.
3. Remove unnecessary files in the project.

TACXNEO馬達規格

本實驗所使用馬達基本參數如下表

馬達型號	Tacxneo 2t
額定電壓 Rated Voltage	100VDC
額定功率 Rated Power	2.2 kW
額定轉矩 Rated Torque	45Nm
額定相電流 Rated Phase Current	45.8A
額定轉速 Rated Speed	250 RPM

電氣參數

Rs	Ld	Lq	$$\lambda$$	Kt(Nm/A)	Ke(RPM/Vdc)
0.0534 $$\mathrm{\Omega }$$	0.0000512 H	0.0000512 H	0.237	1	250RPM/48V

TO DO …

• 增加reference model可調控與模擬 J、B

• 根據實際路面輸出扭矩，提升訓練台對路感的模擬程度，目前debug介面開發中(UART)

• 目前馬達使用neo馬達，需進行馬達設計

• 產品機構要求針對電阻散熱的部分進行考量

• 驅動硬體目前由EMTRC開發中 預期規格 1.6 kW

• HFI模式能夠解決Sliding mode在低速高扭力情況下，振動問題，但HFI有時會出現噪音情況。

• 速度控制器響應

  目前專案速度控制器是使用PI，可以換成專案中MOTION部分所提供的速度控制器SpinTAC

• 路感舒適度-運動科學，可以繪製花生圖去分析路感情況。

• MW_DRIVER board 建議增加48V 12V 3.3V 指示燈，還有PWM訊號測試腳

• 目前Torque observer是PI type的控制器設計且固定頻寬，未來可以試試看IP controller或者使頻寬可調。

• 增加馬達物理和電汽模型(J、B、Rs、Ld、Lq)的準確度

• dcbus偵測，區分兩種模式->有dc OR 沒dc

• 利用J、B調變模擬石頭路、沙子路。