Code for 'Smart Regulator' featured in 'Model Engineer', November 2020 on. Contains all work to August 2020 including all code described. Top level algorithm development is quite spares, leaving some work for you! Any questions - jon@jons-workshop.com
Dependencies: mbed BufferedSerial Servo2 PCT2075 I2CEeprom FastPWM
Alternator.h
- Committer:
- JonFreeman
- Date:
- 2020-06-08
- Revision:
- 2:8e7b51353f32
- Parent:
- 1:450090bdb6f4
- Child:
- 3:43cb067ecd00
File content as of revision 2:8e7b51353f32:
#include "Servo.h" #include "BufferedSerial.h" //#define SPEED_CONTROL_ENABLE // Includes engine revs servo control loop const uint32_t TICKOVER_RPM = 2500; const uint32_t PWM_OFF_RPM_LIMIT = (TICKOVER_RPM * 9) / 10; const uint32_t MAX_RPM_LIMIT = 7500; const double MAX_FIELD_PWM = 0.47; const double SERVO_MAX = 0.5; const double DRIVER_NEUTRAL = 0.18; const uint32_t eeprom_page = 17; // Determines where in eeprom 'settings' reside //const int lut_seg_size = 60; // steps per thousand RPM //const int lut_size = lut_seg_size * 8; // 8 segments - 0-1, 1-2, 2-3, 3-4 etc 000 rpm class VEXT_Data { public: uint64_t t_on, t_off, measured_pw_us, measured_period, rise_count, fall_count; double duty_cycle () { return (double) measured_pw_us / (double) measured_period; } ; VEXT_Data () { // constructor t_on = t_off = measured_pw_us = measured_period = rise_count = fall_count = 0L; } ; } ; class eeprom_settings { char settings [36]; public: eeprom_settings (); // Constructor char rd (uint32_t) ; // Read one setup char value from private buffer 'settings' bool rd (char *, uint32_t) ; // Read one setup char value from private buffer 'settings' bool wr (char, uint32_t) ; // Write one setup char value to private buffer 'settings' bool save () ; // Write 'settings' buffer to EEPROM bool load () ; // Get 'settings' from EEPROM bool set_defaults (); // Put default settings into EEPROM and local buffer // uint32_t errs () ; // Return errors } ; enum {RPM0, RPM1, RPM2, RPM3, RPM4, RPM5, RPM6, RPM7, RPM8, PWM_SCALE, FUT1, FUT2, FUT3, FUT4, FUT5} ; // struct optpar { int min, max, def; // min, max, default const char * t; // description } ; const int MAX_PARAMS = 12; // Up from 10 May 2020 struct parameters { int32_t times[50]; int32_t position_in_list, last_time, numof_dbls; double dbl[MAX_PARAMS]; } ; const int PWM_PERIOD_US = 1800 ; // Was 2400, May want to reduce this, note would require change of resistor value on board