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Improve Delta probing / calibration (#15887)

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This commit is contained in:
Jason Smith
2019-11-21 01:26:00 -08:00
committed by Scott Lahteine
parent 4ede13e36a
commit b904ba0f29
26 changed files with 152 additions and 187 deletions
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29
Marlin/src/gcode/calibrate/G33.cpp
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@ -190,7 +190,7 @@ static float std_dev_points(float z_pt[NPP + 1], const bool _0p_cal, const bool
*/
static float calibration_probe(const xy_pos_t &xy, const bool stow) {
#if HAS_BED_PROBE
return probe_at_point(xy, stow ? PROBE_PT_STOW : PROBE_PT_RAISE, 0, false);
return probe_at_point(xy, stow ? PROBE_PT_STOW : PROBE_PT_RAISE, 0, true);
#else
UNUSED(stow);
return lcd_probe_pt(xy);
@ -222,6 +222,8 @@ static bool probe_calibration_points(float z_pt[NPP + 1], const int8_t probe_poi
if (!_0p_calibration) {
const float dcr = delta_calibration_radius();
if (!_7p_no_intermediates && !_7p_4_intermediates && !_7p_11_intermediates) { // probe the center
const xy_pos_t center{0};
z_pt[CEN] += calibration_probe(center, stow_after_each);
@ -233,7 +235,7 @@ static bool probe_calibration_points(float z_pt[NPP + 1], const int8_t probe_poi
steps = _7p_9_center ? _4P_STEP / 3.0f : _7p_6_center ? _7P_STEP : _4P_STEP;
I_LOOP_CAL_PT(rad, start, steps) {
const float a = RADIANS(210 + (360 / NPP) * (rad - 1)),
r = delta_calibration_radius * 0.1;
r = dcr * 0.1;
const xy_pos_t vec = { cos(a), sin(a) };
z_pt[CEN] += calibration_probe(vec * r, stow_after_each);
if (isnan(z_pt[CEN])) return false;
@ -257,7 +259,7 @@ static bool probe_calibration_points(float z_pt[NPP + 1], const int8_t probe_poi
const int8_t offset = _7p_9_center ? 2 : 0;
for (int8_t circle = 0; circle <= offset; circle++) {
const float a = RADIANS(210 + (360 / NPP) * (rad - 1)),
r = delta_calibration_radius * (1 - 0.1 * (zig_zag ? offset - circle : circle)),
r = dcr * (1 - 0.1 * (zig_zag ? offset - circle : circle)),
interpol = FMOD(rad, 1);
const xy_pos_t vec = { cos(a), sin(a) };
const float z_temp = calibration_probe(vec * r, stow_after_each);
@ -287,9 +289,10 @@ static bool probe_calibration_points(float z_pt[NPP + 1], const int8_t probe_poi
static void reverse_kinematics_probe_points(float z_pt[NPP + 1], abc_float_t mm_at_pt_axis[NPP + 1]) {
xyz_pos_t pos{0};
const float dcr = delta_calibration_radius();
LOOP_CAL_ALL(rad) {
const float a = RADIANS(210 + (360 / NPP) * (rad - 1)),
r = (rad == CEN ? 0.0f : delta_calibration_radius);
r = (rad == CEN ? 0.0f : dcr);
pos.set(cos(a) * r, sin(a) * r, z_pt[rad]);
inverse_kinematics(pos);
mm_at_pt_axis[rad] = delta;
@ -297,7 +300,7 @@ static void reverse_kinematics_probe_points(float z_pt[NPP + 1], abc_float_t mm_
}
static void forward_kinematics_probe_points(abc_float_t mm_at_pt_axis[NPP + 1], float z_pt[NPP + 1]) {
const float r_quot = delta_calibration_radius / delta_radius;
const float r_quot = delta_calibration_radius() / delta_radius;
#define ZPP(N,I,A) (((1.0f + r_quot * (N)) / 3.0f) * mm_at_pt_axis[I].A)
#define Z00(I, A) ZPP( 0, I, A)
@ -338,7 +341,7 @@ static void calc_kinematics_diff_probe_points(float z_pt[NPP + 1], abc_float_t d
}
static float auto_tune_h() {
const float r_quot = delta_calibration_radius / delta_radius;
const float r_quot = delta_calibration_radius() / delta_radius;
return RECIPROCAL(r_quot / (2.0f / 3.0f)); // (2/3)/CR
}
@ -450,12 +453,13 @@ void GcodeSuite::G33() {
SERIAL_ECHOLNPGM("G33 Auto Calibrate");
const float dcr = delta_calibration_radius();
if (!_1p_calibration && !_0p_calibration) { // test if the outer radius is reachable
LOOP_CAL_RAD(axis) {
const float a = RADIANS(210 + (360 / NPP) * (axis - 1)),
r = delta_calibration_radius;
if (!position_is_reachable(cos(a) * r, sin(a) * r)) {
SERIAL_ECHOLNPGM("?(M665 B)ed radius implausible.");
const float a = RADIANS(210 + (360 / NPP) * (axis - 1));
if (!position_is_reachable(cos(a) * dcr, sin(a) * dcr)) {
SERIAL_ECHOLNPGM("?Bed calibration radius implausible.");
return;
}
}
@ -522,12 +526,11 @@ void GcodeSuite::G33() {
#define Z0(I) ZP(0, I)
// calculate factors
const float cr_old = delta_calibration_radius;
if (_7p_9_center) delta_calibration_radius *= 0.9f;
if (_7p_9_center) calibration_radius_factor = 0.9f;
h_factor = auto_tune_h();
r_factor = auto_tune_r();
a_factor = auto_tune_a();
delta_calibration_radius = cr_old;
calibration_radius_factor = 1.0f;
switch (probe_points) {
case 0:

2
Marlin/src/gcode/calibrate/M665.cpp
View File

@ -37,7 +37,6 @@
* L = diagonal rod
* R = delta radius
* S = segments per second
* B = delta calibration radius
* X = Alpha (Tower 1) angle trim
* Y = Beta (Tower 2) angle trim
* Z = Gamma (Tower 3) angle trim
@ -47,7 +46,6 @@
if (parser.seen('L')) delta_diagonal_rod = parser.value_linear_units();
if (parser.seen('R')) delta_radius = parser.value_linear_units();
if (parser.seen('S')) delta_segments_per_second = parser.value_float();
if (parser.seen('B')) delta_calibration_radius = parser.value_float();
if (parser.seen('X')) delta_tower_angle_trim.a = parser.value_float();
if (parser.seen('Y')) delta_tower_angle_trim.b = parser.value_float();
if (parser.seen('Z')) delta_tower_angle_trim.c = parser.value_float();