Motorola M68HC08 manual Low-Voltage Hardware Set Configuration

Page 62

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

Hardware Design

Described in: MC68HC908MR32 Control Board — User’s

Manual (Motorola document order number

MEMCMR32CBUM/D),

see References 3

M1 — IB23810 Motor

Supplied in kit with IB23810 Motor as: ECMTREVAL — Evaluation Motor Board Kit

U2 — 3-Phase AC/BLDC Low Voltage Power Stage:

Supplied in kit with IB23810 Motor as: ECMTREVAL — Evaluation Motor Board Kit

Described in: Motorola Embedded Motion Control Evaluation Motor Board User’s Manual (Motorola document order number MEMCEVMBUM/D) see References 6

The individual modules are described in some sections below. More detailed descriptions of the boards can be found in comprehensive User’s Manuals belonging to each board (References 3, 6). These manuals are available on on the World Wide Web at:

http://www.motorola.com

The User’s Manual incorporates the schematic of the board, description of individual function blocks and a bill of materials. An individual board can be ordered from Motorola as a standard product.

4.2.3 Low-Voltage Hardware Set Configuration

The system configuration for low-voltage hardware set is shown in

Figure 4-3.

Designer Reference Manual

 

DRM028 — Rev 0

 

 

 

62

Hardware Design

MOTOROLA

 

For More Information On This Product,

 

 

Go to: www.freescale.com

 

Image 62
Contents M68HC08 Freescale Semiconductor, IncFor More Information On This Product Sensorless Bldc Motor Control Using MC68HC908MR32 Designer Reference Manual RevRevision history List of Sections List of Sections Table of Contents Table of Contents List of Figures TitleList of Figures List of Tables List of Tables Introduction ContentsBenefits of the Solution Application FunctionalityIntroduction System Description System ConceptSystem Description System Specification Software parameter tuning to a customer motor Software SpecificationSoftware written in C language specifications are listed Software SpecificationsHardware and Drive Specifications High-Voltage Hardware Set SpecificationHigh Voltage Hardware Set Specifications Motor -Brake SetLow-Voltage Hardware Set Specification Low-Voltage Evaluation Hardware Set SpecificationLow Voltage Evaluation Hardware Set Specifications Low Voltage Hardware Set Specifications Bldc Motor Targeted by This Application Bldc Motor ControlBrushless DC Motor Control Theory Semiconductor, Inc Bldc Motor Control Brushless DC Motor Control Theory Bldc Motor Back EMF and Magnetic Flux 2 3-Phase Bldc Power Stage Why Sensorless Control?Power Stage Motor Topology Stator Winding Equations Indirect Back EMF SensingSame expressions can also be found for phase a and B Phase Voltage Waveform Effect of Mutual InductanceMutual Inductance Effect Effect of Mutual Phase Capacitance Detail of Mutual Inductance EffectMutual Capacitance Model 10. Distributed Back-EMF by Unbalanced Capacity Coupling 11. Balanced Capacity Coupling Back-EMF Sensing Circuit Inc Alignment Starting Back-EMF Acquisition Running Used Control TechniqueSensorless Commutation Control 14. Commutation Control Stages Alignment15. Alignment RunningFreescale Semiconductor, Inc Running Commutation Time Calculation Commutation time calculation is shown in FigureService of received back-EMF zero crossing 17. Bldc Commutation Time with Zero Crossing SensingWhere Starting Back-EMF Acquisition Freescale Semiconductor, Inc 18. Vectors of Magnetic Fields 19. Back-EMF at Start Up Computation coefficients are different Starting Commutation Time CalculationRunning Commutation Time Calculation, but the following PC Master Software Application ControlSpeed Control Communication with PC Master Software Specifications PC Master Software Communication CommandsPC Master Software API Variables Name Type Representing Description RangeMotorStatusDef, FailureDef BIT6 ReservedBIT2 Reserved PerSpeedMAXRange and zero crossing period PerZCrosFltT2 SpeedRangeMaxRPM*PerSpeedMAXRange/PerZCrosFltT2Freescale Semiconductor, Inc MC68HC908MR32 Control Board System Configuration and DocumentationHardware Design For High-Voltage Hardware Set cofigurationLow-Voltage Hardware Set configuration For Low-Voltage Evaluation Motor Hardware Set configurationEVM Motor Board Phase Low Voltage EVM Bldc Motor Components will describe the individual boardsHigh-Voltage Hardware Set Configuration High-Voltage Hardware System ConfigurationSee References Described in MC68HC908MR32 Control Board User’sManual Motorola document order number Low-Voltage Evaluation Motor Hardware Set Configuration Low-Voltage Evaluation Motor Hardware System ConfigurationLow-Voltage Hardware Set Configuration System configuration for low-voltage hardware set is shownLow-Voltage Hardware System Configuration 1 MC68HC908MR32 Control Board All HW Sets ComponentsReferences 4shows a block diagram of the board’s circuitry Electrical characteristics in -1apply to operation at 25CHigh-Voltage Hardware Set Components Electrical Characteristics of Control Board1 3-Phase AC/BLDC High Voltage Power Stage Phase AC High Voltage Power Stage Electrical Characteristics of Power Stage Optoisolation BoardElectrical Characteristics of the Optoisolation Board Electrical CharacteristicsEVM Motor Board 3 3-phase Bldc High Voltage Motor with Motor BrakeLow-Voltage Evaluation Motor Hardware Set Components 2 3-phase Low Voltage EVM Bldc Motor Electrical Characteristics of the EVM Motor BoardElectrical Characteristics of the EVM Motor Board Characteristics of the Bldc motor1 3-Ph AC/BLDC Low Voltage Power Stage Low-Voltage Hardware Set ComponentsBlock Diagram 2 3-phase Bldc Low Voltage Motor with Motor Brake SectionIntroduction Data Flow Main Software Flowchart State DiagramSoftware Design Data FlowSoftware Variables Software Variables and Defined ConstantsImportant system variables are listed in Table Process Measurement Start/Stop Switch Reading and Start/Stop DecisionSys3Def Main Data Flow Part1 Process Fault Control Fault Stop Process Back, EMF Zero Crossing SensingFreescale Semiconductor, Inc Main Data Flow Part 2 Alignment, Starting Process Desired Speed Setting Closed Loop Control SystemProcess Alignment Control Processes Commutation and Zero Crossing Preset and SetBldc Speed Control and Calculation Main Software Flowchart Bldc Commutation and Zero Crossing SelectionMain Software Flowchart Freescale Semiconductor, Inc Main Software Flowchart Main Software Loop Freescale Semiconductor, Inc Freescale Semiconductor, Inc State Diagram Software Flowchart InterruptsApplication State Transitions Initialize Application State diagram for this software is shown in FigureInitialize MCU Stand-ByFreescale Semiconductor, Inc Stand-by State Align State Starting Commutation Time Calculation Freescale Semiconductor, Inc 10. Back-EMF Acquisition Commutation Time Calculation Service of CommutationSet Explained in 5.5.5 Back-EMF Acquisition State Service of Received Back-EMF Zero CrossingRunning State Over Current 11. Running State 12. Stop State Fault State Stop StateSoftware Files Implementation NotesSee Figure Software files and structure are described in sectionSet Bldc Commutation and Bemf Zero Crossing Selection Preset Bldc Commutation and Bemf Zero Crossing SelectionBldc Commutation and Zero Crossing Selection PWM Duty Cycle Bldc Speed Control and CalculationDesired Speed Calculation PWMValMax = DUTYPWMMAX*MCPWMMODULUSTimers TimerFunction TIMACh3Int Designer Reference Manual DRM028 Rev 108 Software Design Minimal Application Speed User GuideApplication Suitability Guide Motor’s nominal speedMotor Suitability Maximal Application SpeedVoltage Closed Loop Mutual Inductance Designer Reference Manual DRM028 Rev 112 User Guide Hardware setups are shown in -1, -2, Application Hardware and Software ConfigurationHardware Configuration High-Voltage Hardware Set Configuration Low-Voltage Evaluation Motor Hardware Set ConfigurationLow-Voltage Hardware Set Configuration Controller Board Settings Software Setup EVM Board SettingsEVM board settings are the same for all hardware platforms Application HC08 Software Files \bldczerocros08MR32\sources\bldc08.c, main program Application PC Master Software Control Files Execute from Evaluation Board Software ExecutionBuild Bldczerocros08mr32MMDS.sx is generated When the software is built, the S-record fileExecute from Pre-programmed MCU Application ControlManual Operating Mode PC Master Software Remote Operating ModePC Master Software Control Window For More Information On This Product Tuning for Customer Motor User Guide Tuning for Customer Motor Follow-up for Software Customizing to Customer Motor Follow-up for Advanced Software Customizing To have PC master software installed on your PC computer Start the PC master software parameters tuning application11. PC Master Software Parameters Tuning Control Window Software Parameters Setting Follow-up Labels in the File const.h \bldczerocros08MR32\sources\constcustlv.h, definitions for Software Customizing to Power StageParameters File Selection Example of Software Customizing to HardwareRange 0,infinity Voltage Setting Hardware CustomizingCurrent Setting Hardware Customizing Example of Software Customizing to Hardware Modified maximal measurable voltage is 55 V, so setDetailed description starts here Software Customizing to Motor Voltage and Current SettingsMaximal and Minimal Voltage Limits Setting Range 0,VOLTRANGEMAXMaximal and Minimal Current Limits Setting Range 0,CURRENTRANGEMAXARange 0,8 Alignment Current and Current Regulator SettingCurrent during alignment state before motor starts Α From Evaluation Board Parameters Tuning with PC Master Software Project FileSet constcustx.h 12. PC Master Software Current Parameters Tuning Window Designer Reference Manual DRM028 Rev 142 User Guide MUSTCHANGEEXPERnn in file constcustx.h Commutation Parameters Commutation time period to discharge coil current ∝sStart-up Constants and Maximal Commutation Period Range -128,127 Start-up PeriodMaximal commutation period limit ∝s Constcustx.h Set #define Percmtstartus in constcustx.h Alignment Current and Current Regulator Setting 6.5.4.3Constcustx.h Ensure Percmtstartus =PERCMTMAXUS /2#define Speedpiregigain Constcustx.h file13. PC Master Software Start Parameters Tuning Window Range 0,255 Software Customizing to Motor Speed Control SettingNumber of commutations per motor revolution Range 0,SPEEDRANGEMAXRPM Maximal speed range rpmMinimal speed of the drive rpm Speedminrpm = 0.07 to 0.5SPEEDMAXRPM User Guide 153 Execute from Evaluation Board Start motor see Application Control and PC Master Software Set PC master software control mode and start motor seeRemote Operating Mode PWM frequency setting is provided by PWM Frequency and Current Sampling Period SettingFor the PWM frequency setting, follow the label PWM FrequencyCurrent Sampling Period PWM Frequency SettingPWM period = Periodpwmus = SETPERPWM*2 EQ PERCST1US = Periodpwmus * Setpercs ∝s Conclusion Software Parameters Setting and TuningCANCHANGEPERCURSAMPn in const.h file Current Sampling InstantUser Guide 159 Designer Reference Manual DRM028 Rev 160 User Guide Appendix A. References Motor using MC68HC705MC4 document order number AN1627, MotorolaAppendix B. Glossary SG40NGlossary Serial communications interface module SCI a module that Designer Reference Manual DRM028 Rev 166 Glossary Freescale Semiconductor, Inc HOW to Reach US USA/EUROPE/LOCATIONS not Listed