another noob trying to tune the servo

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8 years 1 month ago #117768 by tommylight
Can you download and boot Linux Mint Mate version, in the preferences menu there is an entry named "disks", open that and do a benchmark of the said SSD, check that the read and write lines are linear with no spikes, if there are huge spikes it points to serial ata problems on the mainboard. Had a fair share of those.

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8 years 1 month ago #117769 by Psykhon
It was the SMI!, after unsuccessfully tried to recompile the smi module to accept the ich10 chipset, just downloaded the smictrl tool and this was the result
## RTAI latency calibration tool ##
# period = 100000 (ns)
# average time = 1 (s)
# use the FPU
# start the timer
# timer_mode is oneshot

RTAI Testsuite - USER latency (all data in nanoseconds)
2018/09/19 19:23:48
RTH| lat min| ovl min| lat avg| lat max| ovl max| overruns
RTD| -1457| -1457| -1436| -878| -878| 0
RTD| -1456| -1457| -1431| -667| -667| 0
RTD| -1456| -1457| -1430| 2759| 2759| 0
RTD| -1455| -1457| -1435| -916| 2759| 0
RTD| -1456| -1457| -1438| -997| 2759| 0
RTD| -1456| -1457| -1431| 3546| 3546| 0
RTD| -1456| -1457| -1435| -687| 3546| 0
RTD| -1456| -1457| -1436| 2710| 3546| 0
RTD| -1456| -1457| -1433| -1021| 3546| 0
RTD| -1456| -1457| -1430| -645| 3546| 0
RTD| -1458| -1458| -1437| -682| 3546| 0
RTD| -1456| -1458| -1437| -782| 3546| 0
RTD| -1456| -1458| -1437| -897| 3546| 0
RTD| -1456| -1458| -1429| -642| 3546| 0
RTD| -1456| -1458| -1435| -902| 3546| 0
RTD| -1456| -1458| -1433| -1005| 3546| 0
RTD| -1456| -1458| -1434| -680| 3546| 0
RTD| -1456| -1458| -1432| -662| 3546| 0
RTD| -1456| -1458| -1437| 3554| 3554| 0
^CRTD| -1456| -1458| -1437| 3554| 3554| 0


also added this simple script to init.d:

#!/bin/sh
### BEGIN INIT INFO
# Provides: blabla
# Required-Start: $syslog
# Required-Stop: $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: blabla
# Description:
#
### END INIT INFO

smictrl -s 0

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8 years 1 month ago #117770 by Psykhon
9 us with 9glxgears runing, I guess this is more than ok right?

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8 years 1 month ago #117771 by PCW
That's great, you probably can do without the isolcpus as that will just slow down the non-real time processes and make the CPU sluggish. Even 20-50 usec of latency wont have any noticeable effect on LinuxCNCs performance.
(as long as you are not generating steps in software for a parallel port setup)

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8 years 1 month ago #117808 by Psykhon
dam it, cannot get the stepper on axis Z to work, it trows axis 2 following error on every attempt, here is my hal, its modified from one thats generated by pncconf, so there its some cleaning todo
Code:
# Generated by PNCconf at Tue Sep 11 20:55:58 2018 # If you make changes to this file, they will be # overwritten when you run PNCconf again loadrt trivkins loadrt [EMCMOT]EMCMOT servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[TRAJ]AXES loadrt hostmot2 loadrt hm2_pci config=" num_encoders=6 num_pwmgens=0 num_stepgens=4 sserial_port_0=00000x" setp hm2_5i25.0.watchdog.timeout_ns 5000000 loadrt pid names=pid.x,pid.y,pid.s addf hm2_5i25.0.read servo-thread addf motion-command-handler servo-thread addf motion-controller servo-thread addf pid.x.do-pid-calcs servo-thread addf pid.y.do-pid-calcs servo-thread #addf pid.z.do-pid-calcs servo-thread addf pid.s.do-pid-calcs servo-thread addf hm2_5i25.0.write servo-thread # external output signals # external input signals #net axis.0.home-sw-in #net axis.0.neg-lim-sw-in hm2_5i25.0.7i77.0.0.input-00 #net axis.0.pos-lim-sw-in hm2_5i25.0.7i77.0.0.input-00 net x-home-sw axis.0.home-sw-in <= hm2_5i25.0.7i77.0.0.input-00-not #/net y-neg-limit axis.0.neg-lim-sw-in <= hm2_5i25.0.7i77.0.0.input-00 net x-pos-limit axis.0.pos-lim-sw-in <= hm2_5i25.0.7i77.0.0.input-01-not net y-home-sw axis.1.home-sw-in <= hm2_5i25.0.7i77.0.0.input-02-not #/net y-neg-limit axis.1.neg-lim-sw-in <= hm2_5i25.0.7i77.0.0.input-00 net y-pos-limit axis.1.pos-lim-sw-in <= hm2_5i25.0.7i77.0.0.input-03-not net z-home-sw axis.2.home-sw-in <= hm2_5i25.0.7i77.0.0.input-04-not # --- ESTOP-IN --- net estop-ext <= hm2_5i25.0.7i77.0.0.input-11 #******************* # AXIS X #******************* setp pid.x.Pgain [AXIS_0]P setp pid.x.Igain [AXIS_0]I setp pid.x.Dgain [AXIS_0]D setp pid.x.bias [AXIS_0]BIAS setp pid.x.FF0 [AXIS_0]FF0 setp pid.x.FF1 [AXIS_0]FF1 setp pid.x.FF2 [AXIS_0]FF2 setp pid.x.deadband [AXIS_0]DEADBAND setp pid.x.maxoutput [AXIS_0]MAX_OUTPUT setp pid.x.error-previous-target true net x-index-enable <=> pid.x.index-enable net x-enable => pid.x.enable net x-pos-cmd => pid.x.command net x-vel-cmd => pid.x.command-deriv net x-pos-fb => pid.x.feedback net x-output => pid.x.output # ---PWM Generator signals/setup--- #setp hm2_5i25.0.7i77.0.1.analogout1-scalemax [AXIS_0]OUTPUT_SCALE #setp hm2_5i25.0.7i77.0.1.analogout1-minlim [AXIS_0]OUTPUT_MIN_LIMIT #setp hm2_5i25.0.7i77.0.1.analogout1-maxlim [AXIS_0]OUTPUT_MAX_LIMIT net x-output => hm2_5i25.0.7i77.0.1.analogout1 net x-pos-cmd axis.0.motor-pos-cmd net x-enable axis.0.amp-enable-out # enable _all_ sserial pwmgens net x-enable hm2_5i25.0.7i77.0.1.analogena # ---Encoder feedback signals/setup--- setp hm2_5i25.0.encoder.01.counter-mode 0 setp hm2_5i25.0.encoder.01.filter 1 setp hm2_5i25.0.encoder.01.index-invert 0 setp hm2_5i25.0.encoder.01.index-mask 0 setp hm2_5i25.0.encoder.01.index-mask-invert 0 setp hm2_5i25.0.encoder.01.scale [AXIS_0]ENCODER_SCALE net x-pos-fb <= hm2_5i25.0.encoder.01.position net x-vel-fb <= hm2_5i25.0.encoder.01.velocity net x-pos-fb => axis.0.motor-pos-fb net x-index-enable axis.0.index-enable <=> hm2_5i25.0.encoder.01.index-enable net x-pos-rawcounts <= hm2_5i25.0.encoder.01.rawcounts # ---setup home / limit switch signals--- #net x-home-sw => axis.1.home-sw-in #net x-neg-limit => axis.1.neg-lim-sw-in #net x-pos-limit => axis.1.pos-lim-sw-in #******************* # AXIS Y #******************* setp pid.y.Pgain [AXIS_1]P setp pid.y.Igain [AXIS_1]I setp pid.y.Dgain [AXIS_1]D setp pid.y.bias [AXIS_1]BIAS setp pid.y.FF0 [AXIS_1]FF0 setp pid.y.FF1 [AXIS_1]FF1 setp pid.y.FF2 [AXIS_1]FF2 setp pid.y.deadband [AXIS_1]DEADBAND setp pid.y.maxoutput [AXIS_1]MAX_OUTPUT setp pid.y.error-previous-target true net y-index-enable <=> pid.y.index-enable net y-enable => pid.y.enable net y-pos-cmd => pid.y.command net y-vel-cmd => pid.y.command-deriv net y-pos-fb => pid.y.feedback net y-output => pid.y.output # ---PWM Generator signals/setup--- setp hm2_5i25.0.7i77.0.1.analogout0-scalemax [AXIS_1]OUTPUT_SCALE setp hm2_5i25.0.7i77.0.1.analogout0-minlim [AXIS_1]OUTPUT_MIN_LIMIT setp hm2_5i25.0.7i77.0.1.analogout0-maxlim [AXIS_1]OUTPUT_MAX_LIMIT net y-output => hm2_5i25.0.7i77.0.1.analogout0 net y-pos-cmd axis.1.motor-pos-cmd net y-enable axis.1.amp-enable-out # ---Encoder feedback signals/setup--- setp hm2_5i25.0.encoder.00.counter-mode 0 setp hm2_5i25.0.encoder.00.filter 1 setp hm2_5i25.0.encoder.00.index-invert 0 setp hm2_5i25.0.encoder.00.index-mask 0 setp hm2_5i25.0.encoder.00.index-mask-invert 0 setp hm2_5i25.0.encoder.00.scale [AXIS_1]ENCODER_SCALE net y-pos-fb <= hm2_5i25.0.encoder.00.position net y-vel-fb <= hm2_5i25.0.encoder.00.velocity net y-pos-fb => axis.1.motor-pos-fb net y-index-enable axis.1.index-enable <=> hm2_5i25.0.encoder.00.index-enable net y-pos-rawcounts <= hm2_5i25.0.encoder.00.rawcounts #******************* # AXIS Z #******************* #setp pid.z.Pgain [AXIS_2]P #setp pid.z.Igain [AXIS_2]I #setp pid.z.Dgain [AXIS_2]D #setp pid.z.bias [AXIS_2]BIAS #setp pid.z.FF0 [AXIS_2]FF0 #setp pid.z.FF1 [AXIS_2]FF1 #setp pid.z.FF2 [AXIS_2]FF2 #setp pid.z.deadband [AXIS_2]DEADBAND #setp pid.z.maxoutput [AXIS_2]MAX_OUTPUT #setp pid.z.error-previous-target true #setp pid.z.maxerror .0005 #net z-index-enable <=> pid.z.index-enable #net z-enable => pid.z.enable #net z-pos-cmd => pid.z.command #net z-vel-cmd => pid.z.command-deriv #net z-pos-fb => pid.z.feedback #net z-output => pid.z.output # Step Gen signals/setup setp hm2_5i25.0.stepgen.00.dirsetup [AXIS_2]DIRSETUP setp hm2_5i25.0.stepgen.00.dirhold [AXIS_2]DIRHOLD setp hm2_5i25.0.stepgen.00.steplen [AXIS_2]STEPLEN setp hm2_5i25.0.stepgen.00.stepspace [AXIS_2]STEPSPACE setp hm2_5i25.0.stepgen.00.position-scale [AXIS_2]STEP_SCALE setp hm2_5i25.0.stepgen.00.step_type 0 setp hm2_5i25.0.stepgen.00.control-type 0 setp hm2_5i25.0.stepgen.00.maxaccel [AXIS_2]STEPGEN_MAXACCEL setp hm2_5i25.0.stepgen.00.maxvel [AXIS_2]STEPGEN_MAXVEL # --- stepper signals--- net z-pos-cmd axis.2.motor-pos-cmd => hm2_5i25.0.stepgen.00.position-cmd net z-pos-fb axis.2.motor-pos-fb <= hm2_5i25.0.stepgen.00.position-fb #net z-vel-cmd <= axis.2.joint-vel-cmd #net <= hm2_5i25.0.stepgen.00.velocity-cmd # #net z-pos-fb => axis.2.motor-pos-fb #// ---enable del stepgen0 de 7i78 esta en 7i77 salida 0 y DM556 habilita invertido setp hm2_5i25.0.7i77.0.0.output-00-invert 1 net z-enable <= axis.2.amp-enable-out net z-enable => hm2_5i25.0.7i77.0.0.output-00 # ---setup home / limit switch signals--- net z-home-sw => axis.2.home-sw-in net z-neg-limit => axis.2.neg-lim-sw-in net z-pos-limit => axis.2.pos-lim-sw-in #******************* # SPINDLE S #******************* setp pid.s.Pgain [SPINDLE_9]P setp pid.s.Igain [SPINDLE_9]I setp pid.s.Dgain [SPINDLE_9]D setp pid.s.bias [SPINDLE_9]BIAS setp pid.s.FF0 [SPINDLE_9]FF0 setp pid.s.FF1 [SPINDLE_9]FF1 setp pid.s.FF2 [SPINDLE_9]FF2 setp pid.s.deadband [SPINDLE_9]DEADBAND setp pid.s.maxoutput [SPINDLE_9]MAX_OUTPUT setp pid.s.error-previous-target true net spindle-index-enable <=> pid.s.index-enable net spindle-enable => pid.s.enable net spindle-vel-cmd-rpm => pid.s.command net spindle-vel-fb-rpm => pid.s.feedback net spindle-output <= pid.s.output # ---digital potentionmeter output signals/setup--- #setp hm2_5i25.0.7i78.0.3.spinout-minlim [SPINDLE_9]OUTPUT_MIN_LIMIT #setp hm2_5i25.0.7i78.0.3.spinout-maxlim [SPINDLE_9]OUTPUT_MAX_LIMIT #setp hm2_5i25.0.7i78.0.3.spinout-scalemax [SPINDLE_9]OUTPUT_SCALE #net spindle-output => hm2_5i25.0.pwmgen.pwm_frequency #hm2_5i25.0.7i78.0.3.spinout #net spindle-enable => hm2_5i25.0.pwmgen.00.enable #hm2_5i25.0.7i78.0.3.spinena #net spindle-ccw => hm2_5i25.0.7i78.0.3.spindir # ---setup spindle control signals--- net spindle-vel-cmd-rps <= motion.spindle-speed-out-rps net spindle-vel-cmd-rps-abs <= motion.spindle-speed-out-rps-abs net spindle-vel-cmd-rpm <= motion.spindle-speed-out net spindle-vel-cmd-rpm-abs <= motion.spindle-speed-out-abs net spindle-enable <= motion.spindle-on net spindle-cw <= motion.spindle-forward net spindle-ccw <= motion.spindle-reverse net spindle-brake <= motion.spindle-brake net spindle-revs => motion.spindle-revs net spindle-at-speed => motion.spindle-at-speed net spindle-vel-fb-rps => motion.spindle-speed-in net spindle-index-enable <=> motion.spindle-index-enable # ---Setup spindle at speed signals--- sets spindle-at-speed true #****************************** # connect miscellaneous signals #****************************** # ---HALUI signals--- net joint-select-a halui.joint.0.select net x-is-homed halui.joint.0.is-homed net jog-x-pos halui.jog.0.plus net jog-x-neg halui.jog.0.minus net jog-x-analog halui.jog.0.analog net joint-select-b halui.joint.1.select net y-is-homed halui.joint.1.is-homed net jog-y-pos halui.jog.1.plus net jog-y-neg halui.jog.1.minus net jog-y-analog halui.jog.1.analog net joint-select-c halui.joint.2.select net z-is-homed halui.joint.2.is-homed net jog-z-pos halui.jog.2.plus net jog-z-neg halui.jog.2.minus net jog-z-analog halui.jog.2.analog net jog-selected-pos halui.jog.selected.plus net jog-selected-neg halui.jog.selected.minus net spindle-manual-cw halui.spindle.forward net spindle-manual-ccw halui.spindle.reverse net spindle-manual-stop halui.spindle.stop net machine-is-on halui.machine.is-on net jog-speed halui.jog-speed net MDI-mode halui.mode.is-mdi # ---coolant signals--- net coolant-mist <= iocontrol.0.coolant-mist net coolant-flood <= iocontrol.0.coolant-flood # ---probe signal--- net probe-in => motion.probe-input # ---motion control signals--- net in-position <= motion.in-position net machine-is-enabled <= motion.motion-enabled # ---digital in / out signals--- # ---estop signals--- net estop-out <= iocontrol.0.user-enable-out #net estop-out => iocontrol.0.emc-enable-in net estop-ext => iocontrol.0.emc-enable-in # ---manual tool change signals--- loadusr -W hal_manualtoolchange net tool-change-request iocontrol.0.tool-change => hal_manualtoolchange.change net tool-change-confirmed iocontrol.0.tool-changed <= hal_manualtoolchange.changed net tool-number iocontrol.0.tool-prep-number => hal_manualtoolchange.number net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

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8 years 1 month ago #117810 by PCW
This line being commented out will guarantee a following error:

#addf pid.z.do-pid-calcs servo-thread

Ahh nevermind looks like you changed the stepgen to position mode without the PID

(I would not suggest this in general as the PID stepgen control is superior though position mode should work)
can you post your ini file?

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8 years 1 month ago #117811 by Psykhon
# Generated by PNCconf at Tue Sep 11 20:55:58 2018
# If you make changes to this file, they will be
# overwritten when you run PNCconf again

[EMC]
MACHINE = ProtoServoCnc
DEBUG = 0

[DISPLAY]
DISPLAY = axis
POSITION_OFFSET = RELATIVE
POSITION_FEEDBACK = ACTUAL
MAX_FEED_OVERRIDE = 2.000000
MAX_SPINDLE_OVERRIDE = 1.000000
MIN_SPINDLE_OVERRIDE = 0.500000
INTRO_GRAPHIC = linuxcnc.gif
INTRO_TIME = 5
PROGRAM_PREFIX = /home/psykhon/linuxcnc/nc_files
INCREMENTS = 100mm 50mm 20mm 10mm 5mm 1mm .5mm .1mm .05mm .01mm .005mm
POSITION_FEEDBACK = ACTUAL
DEFAULT_LINEAR_VELOCITY = 50.000000
MAX_LINEAR_VELOCITY = 600.000000
MIN_LINEAR_VELOCITY = 0.500000
DEFAULT_ANGULAR_VELOCITY = 12.000000
MAX_ANGULAR_VELOCITY = 300.000000
MIN_ANGULAR_VELOCITY = 1.666667
EDITOR = gedit
GEOMETRY = xyz

[FILTER]
PROGRAM_EXTENSION = .png,.gif,.jpg Greyscale Depth Image
PROGRAM_EXTENSION = .py Python Script
png = image-to-gcode
gif = image-to-gcode
jpg = image-to-gcode
py = python

[TASK]
TASK = milltask
CYCLE_TIME = 0.010

[RS274NGC]
PARAMETER_FILE = linuxcnc.var

[EMCMOT]
EMCMOT = motmod
COMM_TIMEOUT = 1.0
COMM_WAIT = 0.010
SERVO_PERIOD = 1000000

[HOSTMOT2]
# **** This is for info only ****
# DRIVER0=hm2_pci
# BOARD0=5i25

[HAL]
HALUI = halui
HALFILE = ProtoServoCnc.hal
HALFILE = custom.hal
POSTGUI_HALFILE = postgui_call_list.hal
SHUTDOWN = shutdown.hal

[HALUI]

[TRAJ]
AXES = 3
COORDINATES = X Y Z
LINEAR_UNITS = mm
ANGULAR_UNITS = degree
CYCLE_TIME = 0.010
DEFAULT_VELOCITY = 2.50
MAX_LINEAR_VELOCITY = 25.00

[EMCIO]
EMCIO = io
CYCLE_TIME = 0.100
TOOL_TABLE = tool.tbl
TOOL_CHANGE_QUILL_UP = 1

#********************
# Axis X
#********************
[AXIS_0]
TYPE = LINEAR
HOME = 0.0
FERROR = 10.0
MIN_FERROR = 1.0
MAX_VELOCITY = 500.0
MAX_ACCELERATION = 2000.0
P = 1.3
I = 0
D = 0
FF0 = 0
FF1 = 0.0078
FF2 = 7e-05
BIAS = 0
DEADBAND = 0
MAX_OUTPUT = 0
ENCODER_SCALE = 500
OUTPUT_SCALE = 10
OUTPUT_MIN_LIMIT = -10
OUTPUT_MAX_LIMIT = 10
MIN_LIMIT = -0.01
MAX_LIMIT = 200.0
HOME_OFFSET = 0.0
HOME_SEARCH_VEL = -10.000000
HOME_LATCH_VEL = -1
HOME_FINAL_VEL= 10
HOME_USE_INDEX = NO
HOME_SEQUENCE = 1

#********************
# Axis Y
#********************
[AXIS_1]
TYPE = LINEAR
HOME = 0.0
FERROR = 10.0
MIN_FERROR = 1.0
MAX_VELOCITY = 500.0
MAX_ACCELERATION = 2000.0
P = 1.4
I = 0
D = 0
FF0 = 0
FF1 = 0.0074
FF2 = 1e-05
BIAS = 0
DEADBAND = 0
MAX_OUTPUT = 0
ENCODER_SCALE = 500
OUTPUT_SCALE = 10
OUTPUT_MIN_LIMIT = -10
OUTPUT_MAX_LIMIT = 10
MIN_LIMIT = -0.01
MAX_LIMIT = 200.0
HOME_OFFSET = 0.0
HOME_SEARCH_VEL = -10.000000
HOME_LATCH_VEL = -1
HOME_FINAL_VEL= 10
HOME_USE_INDEX = NO
HOME_SEQUENCE = 2

#********************
# Axis Z
#********************
[AXIS_2]
TYPE = LINEAR
HOME = 0.0
FERROR = 10.0
MIN_FERROR = 1.0
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
# The values below should be 25% larger than MAX_VELOCITY and MAX_ACCELERATION
# If using BACKLASH compensation STEPGEN_MAXACCEL should be 100% larger.
STEPGEN_MAXVEL = 5
STEPGEN_MAXACCEL = 937.5
P = 1
I = 0
D = 0
FF0 = 0
FF1 = 1
FF2 = 0
BIAS = 0
DEADBAND = 0
MAX_OUTPUT = 0
# these are in nanoseconds
DIRSETUP = 1000
DIRHOLD = 1000
STEPLEN = 1000
STEPSPACE = 1000
STEP_SCALE = 800
MIN_LIMIT = -100.0
MAX_LIMIT = 0.01
HOME_OFFSET = 0.0
HOME_SEARCH_VEL = 10.000000
HOME_LATCH_VEL = 1
HOME_FINAL_VEL= -10
HOME_USE_INDEX = NO
HOME_SEQUENCE = 0

#********************
# Spindle
#********************
[SPINDLE_9]
P = 0.0
I = 0.0
D = 0.0
FF0 = 1.0
FF1 = 0.0
FF2 = 0.0
BIAS = 0.0
DEADBAND = 0.0
MAX_OUTPUT = 2000.0
OUTPUT_SCALE = 2000
OUTPUT_MIN_LIMIT = -2000
OUTPUT_MAX_LIMIT = 2000

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8 years 1 month ago #117812 by Psykhon
"(I would not suggest this in general as the PID stepgen control is superior though position mode should work)
can you post your ini file?"

It was on PID originally but same error, so I tried to copy the same config for that axis as it was previously when the machine was steppers only and g540

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8 years 1 month ago #117819 by PCW
STEPGEN_MAXVEL = 5

^ This needs to be 25% larger than this:

MAX_VELOCITY = 25.0

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8 years 1 month ago #117823 by Psykhon
no luck, tried 25% larger and more , also tried increasing STEPGEN_MAXACCEL


MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
# The values below should be 25% larger than MAX_VELOCITY and MAX_ACCELERATION
# If using BACKLASH compensation STEPGEN_MAXACCEL should be 100% larger.
STEPGEN_MAXVEL = 40
STEPGEN_MAXACCEL = 1500

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