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Help wanted Tuning PID's
#1
Thanks in advance.

I'm quite new to tuning quads.  In fact I'm still learning how they are supposed to feel in flight.

I've got a Vortex Pro 250 stock 5045 props and no camera.  And after flying it for 3 or 4 sessions, I decided I wanted Airmode so upgraded the firmware. I grabbed a profile (Ummagawd's) and adjusted it a bit based on a post by him, but it was still out.. I added some Pitch D then took away some Pitch P. and it's about the same pitch and roll now I think.

This is using rewrite.

Now of course it needs tuning and I'm attempting to do it, but don't quite know what I'm looking for.. I've been reading lots on the subject, but converting what I read to what I see is difficult. 

So I'll post a BB and my setup.  Hopefully I can learn something out of the tuning help I may get.

My BB log of my last flight is here:
https://www.dropbox.com/s/tbo4l5u85z8ac5...5.TXT?dl=0


I mostly like how it's flying, but I get shuddering when applying power after an extended drop.. also I'm not sure if the amount of 'judder' after sudden moves is right. it seems ok but as I said I'm not sure what 'locked in' even feels like.




Code:
# version
# BetaFlight/IRCFUSIONF3 2.5.3 Mar  6 2016 / 14:18:34 (0aac025)
# dump master

# mixer
mixer QUADX
mmix reset
smix reset


# feature
feature -RX_PPM
feature -VBAT
feature -INFLIGHT_ACC_CAL
feature -RX_SERIAL
feature -MOTOR_STOP
feature -SERVO_TILT
feature -SOFTSERIAL
feature -GPS
feature -FAILSAFE
feature -SONAR
feature -TELEMETRY
feature -CURRENT_METER
feature -3D
feature -RX_PARALLEL_PWM
feature -RX_MSP
feature -RSSI_ADC
feature -LED_STRIP
feature -DISPLAY
feature -ONESHOT125
feature -BLACKBOX
feature -CHANNEL_FORWARDING
feature RX_SERIAL
feature GPS
feature FAILSAFE
feature ONESHOT125
feature BLACKBOX


# beeper
beeper  GYRO_CALIBRATED
beeper  RX_LOST
beeper  RX_LOST_LANDING
beeper  DISARMING
beeper  ARMING
beeper  ARMING_GPS_FIX
beeper  BAT_CRIT_LOW
beeper  BAT_LOW
beeper  GPS_STATUS
beeper  RX_SET
beeper  ACC_CALIBRATION
beeper  ACC_CALIBRATION_FAIL
beeper  READY_BEEP
beeper  MULTI_BEEPS
beeper  DISARM_REPEAT
beeper  ARMED
beeper  SYSTEM_INIT
beeper  ON_USB


# map
map AETR1234


# serial
serial 0 1 115200 57600 0 115200
serial 1 2 115200 38400 0 115200
serial 2 64 115200 57600 0 115200


# led
led 0 15,15:ES:IA:0
led 1 15,8:E:WF:0
led 2 15,7:E:WF:0
led 3 15,0:NE:IA:0
led 4 8,0:N:F:0
led 5 7,0:N:F:0
led 6 0,0:NW:IA:0
led 7 0,7:W:WF:0
led 8 0,8:W:WF:0
led 9 0,15:SW:IA:0
led 10 7,15:S:WF:0
led 11 8,15:S:WF:0
led 12 7,7:U:WF:0
led 13 8,7:U:WF:0
led 14 7,8:D:WF:0
led 15 8,8:D:WF:0
led 16 8,9::R:3
led 17 9,10::R:3
led 18 10,11::R:3
led 19 10,12::R:3
led 20 9,13::R:3
led 21 8,14::R:3
led 22 7,14::R:3
led 23 6,13::R:3
led 24 5,12::R:3
led 25 5,11::R:3
led 26 6,10::R:3
led 27 7,9::R:3
led 28 0,0:::0
led 29 0,0:::0
led 30 0,0:::0
led 31 0,0:::0


# color
color 0 0,0,0
color 1 0,255,255
color 2 0,0,255
color 3 30,0,255
color 4 60,0,255
color 5 90,0,255
color 6 120,0,255
color 7 150,0,255
color 8 180,0,255
color 9 210,0,255
color 10 240,0,255
color 11 270,0,255
color 12 300,0,255
color 13 330,0,255
color 14 0,0,0
color 15 0,0,0

# aux
aux 0 0 2 1700 2100
aux 1 1 0 1300 1700
aux 2 2 0 1700 2100
aux 3 27 3 1700 2100
aux 4 0 0 900 900
aux 5 0 0 900 900
aux 6 0 0 900 900
aux 7 0 0 900 900
aux 8 0 0 900 900
aux 9 0 0 900 900
aux 10 0 0 900 900
aux 11 0 0 900 900
aux 12 0 0 900 900
aux 13 0 0 900 900
aux 14 0 0 900 900
aux 15 0 0 900 900
aux 16 0 0 900 900
aux 17 0 0 900 900
aux 18 0 0 900 900
aux 19 0 0 900 900

# adjrange
adjrange 0 0 1 900 2100 12 1
adjrange 1 0 0 900 900 0 0
adjrange 2 0 0 900 900 0 0
adjrange 3 0 0 900 900 0 0
adjrange 4 0 0 900 900 0 0
adjrange 5 0 0 900 900 0 0
adjrange 6 0 0 900 900 0 0
adjrange 7 0 0 900 900 0 0
adjrange 8 0 0 900 900 0 0
adjrange 9 0 0 900 900 0 0
adjrange 10 0 0 900 900 0 0
adjrange 11 0 0 900 900 0 0
adjrange 12 0 0 900 900 0 0
adjrange 13 0 0 900 900 0 0
adjrange 14 0 0 900 900 0 0

# rxrange
rxrange 0 1000 2000
rxrange 1 1000 2000
rxrange 2 998 2000
rxrange 3 1000 2000

# servo
servo 0 1000 2000 1500 90 90 100 -1
servo 1 1000 2000 1500 90 90 100 -1
servo 2 1000 2000 1500 90 90 100 -1
servo 3 1000 2000 1500 90 90 100 -1
servo 4 1000 2000 1500 90 90 100 -1
servo 5 1000 2000 1500 90 90 100 -1
servo 6 1000 2000 1500 90 90 100 -1
servo 7 1000 2000 1500 90 90 100 -1

set mid_rc = 1500
set min_check = 1040
set max_check = 1900
set rssi_channel = 0
set rssi_scale = 30
set rssi_ppm_invert = OFF
set input_filtering_mode = OFF
set rc_smoothing = OFF
set roll_yaw_cam_mix_degrees = 0
set max_aux_channels = 6
set debug_mode = NONE
set min_throttle = 1100
set max_throttle = 1900
set min_command = 1015
set servo_center_pulse = 1500
set 3d_deadband_low = 1406
set 3d_deadband_high = 1514
set 3d_neutral = 1460
set 3d_deadband_throttle = 50
set use_oneshot42 = OFF
set use_multishot = OFF
set motor_pwm_rate = 400
set servo_pwm_rate = 50
set disarm_kill_switch = ON
set auto_disarm_delay = 5
set small_angle = 180
set fixedwing_althold_dir = 1
set reboot_character = 82
set gps_provider = NMEA
set gps_sbas_mode = AUTO
set gps_auto_config = ON
set gps_auto_baud = OFF
set gps_wp_radius = 200
set nav_controls_heading = ON
set nav_speed_min = 100
set nav_speed_max = 300
set nav_slew_rate = 30
set serialrx_provider = SBUS
set sbus_inversion = ON
set spektrum_sat_bind = 0
set spektrum_sat_bind_autoreset = 1
set telemetry_switch = OFF
set telemetry_inversion = ON
set frsky_default_lattitude =  0.000
set frsky_default_longitude =  0.000
set frsky_coordinates_format = 0
set frsky_unit = IMPERIAL
set frsky_vfas_precision = 0
set frsky_vfas_cell_voltage = OFF
set hott_alarm_sound_interval = 5
set battery_capacity = 0
set vbat_scale = 110
set vbat_max_cell_voltage = 40
set vbat_min_cell_voltage = 30
set vbat_warning_cell_voltage = 30
set vbat_pid_compensation = OFF
set current_meter_scale = 400
set current_meter_offset = 0
set multiwii_current_meter_output = OFF
set current_meter_type = ADC
set align_gyro = DEFAULT
set align_acc = DEFAULT
set align_mag = DEFAULT
set align_board_roll = 0
set align_board_pitch = 0
set align_board_yaw = 90
set max_angle_inclination = 700
set gyro_lpf = OFF
set gyro_sync_denom = 8
set gyro_soft_lpf =  60.000
set moron_threshold = 32
set imu_dcm_kp = 2500
set imu_dcm_ki = 0
set alt_hold_deadband = 40
set alt_hold_fast_change = ON
set deadband = 0
set yaw_deadband = 0
set throttle_correction_value = 0
set throttle_correction_angle = 800
set yaw_control_direction = 1
set yaw_motor_direction = 1
set yaw_jump_prevention_limit = 200
set tri_unarmed_servo = ON
set servo_lowpass_freq = 400
set servo_lowpass_enable = OFF
set acro_plus_factor = 30
set acro_plus_offset = 40
set failsafe_delay = 10
set failsafe_off_delay = 0
set failsafe_throttle = 1100
set failsafe_kill_switch = OFF
set failsafe_throttle_low_delay = 100
set failsafe_procedure = OFF
set rx_min_usec = 885
set rx_max_usec = 2115
set gimbal_mode = NORMAL
set acc_hardware = AUTO
set acc_lpf_hz =  10.000
set accxy_deadband = 40
set accz_deadband = 40
set acc_unarmedcal = ON
set acc_trim_pitch = 0
set acc_trim_roll = 0
set baro_tab_size = 21
set baro_noise_lpf =  0.600
set baro_cf_vel =  0.985
set baro_cf_alt =  0.965
set baro_hardware = AUTO
set mag_hardware = AUTO
set mag_declination = 0
set pid_process_denom = 1
set blackbox_rate_num = 1
set blackbox_rate_denom = 2
set blackbox_device = SPIFLASH
set magzero_x = 0
set magzero_y = 0
set magzero_z = 0

# rxfail
rxfail 0 a
rxfail 1 a
rxfail 2 a
rxfail 3 a
rxfail 4 h
rxfail 5 h
rxfail 6 h
rxfail 7 h
rxfail 8 h
rxfail 9 h
rxfail 10 h
rxfail 11 h
rxfail 12 h
rxfail 13 h
rxfail 14 h
rxfail 15 h
rxfail 16 h
rxfail 17 h

# dump profile

# profile
profile 0

set gps_pos_p = 15
set gps_pos_i = 0
set gps_pos_d = 0
set gps_posr_p = 34
set gps_posr_i = 14
set gps_posr_d = 53
set gps_nav_p = 25
set gps_nav_i = 33
set gps_nav_d = 83
set yaw_p_limit = 300
set pid_delta_method = MEASUREMENT
set dterm_lpf_hz =  0.000
set dterm_average_count = 4
set pid_controller = MWREWRITE
set p_pitch = 92
set i_pitch = 35
set d_pitch = 42
set p_roll = 57
set i_roll = 23
set d_roll = 24
set p_yaw = 110
set i_yaw = 80
set d_yaw = 38
set p_pitchf =  1.700
set i_pitchf =  0.300
set d_pitchf =  0.025
set p_rollf =  1.600
set i_rollf =  0.300
set d_rollf =  0.025
set p_yawf =  4.000
set i_yawf =  0.400
set d_yawf =  0.000
set level_horizon =  5.000
set level_angle =  4.600
set sensitivity_horizon = 75
set p_alt = 50
set i_alt = 0
set d_alt = 0
set p_level = 20
set i_level = 100
set d_level = 150
set p_vel = 120
set i_vel = 45
set d_vel = 2

# rateprofile
rateprofile 0

set rc_rate = 100
set rc_expo = 70
set rc_yaw_expo = 50
set thr_mid = 50
set thr_expo = 0
set roll_rate = 73
set pitch_rate = 73
set yaw_rate = 100
set tpa_rate = 33
set tpa_breakpoint = 1500

# dump rates

# rateprofile
rateprofile 0

set rc_rate = 100
set rc_expo = 70
set rc_yaw_expo = 50
set thr_mid = 50
set thr_expo = 0
set roll_rate = 73
set pitch_rate = 73
set yaw_rate = 100
set tpa_rate = 33
set tpa_breakpoint = 1500
Al...
Reply
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#2
Hmm... been busy. I still don't know anything, but I have stumbled upon some resources that I didn't know existed for learning to analyse BB files.


Video Descriptions of Black Box analyisis (this one lines up the squiggly lines with verbal description of what's happening... still wading through it)
http://www.rcgroups.com/forums/showthrea...st32465747

Main Blackbox thread:
http://www.rcgroups.com/forums/showthread.php?t=2299805

Blackbox log analyzation\help thread
http://www.rcgroups.com/forums/showthread.php?t=2386267
Reply
#3
Ok.. so I've spent some hours watching videos from
http://www.rcgroups.com/forums/showthrea...st32465747

I am getting to the stage where I know what he's going to say about various tunes and I skip ahead..

For anyone wanting to get a handle on BB PID tuning, I strongly recommend taking the time and watching your way through some of his early videos, and then the last bunch since December. After he repeats what's a good looking tune a few times, it sinks in.

Al...
Reply


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