Bosch 6000 User's Guide Page 167

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152
6000 Series Programmer's Guide
Linear Interpolation
NOTE
Linear Interpolation is not
applicable to single-axis
products.
2-axis products can
accommodate only 2-
axis (X & Y) linear
interpolation.
The controller allows you to perform linear interpolation, the process of moving two or three
orthogonal (right angle) linear axes to achieve linear (straight line) motion; a fourth axis may
also participate in the move profile. The task is to derive appropriate move parameters to
move from a current location to a new location, where each position is specified by a set of
Cartesian coordinates. All axes must start, accelerate, decelerate, and stop in a synchronized
manner.
The Initiate Linear Interpolated Motion (GOL) command initiates linear interpolation moves
based on the parameters set with the D, PA, PAD, and PV commands. You simply enter the
desired path acceleration (PA), the path deceleration (PAD), and the path velocity (PV) to arrive
at the point in space (end point) specified with the distance (D) command; the controller
internally calculates each axis' actual move profiles to achieve a straight-line path with these
parameters.
You can scale the acceleration, velocity, and distance with the PSCLA, PSCLV, and SCLD
commands, respectively (see example below).
The GOL command starts motion on either or both axes. If the GOL command is issued
without any arguments, motion will be started on both axes.
Code
Sample
SCALE1 ; Enable scaling
@PSCLA4000 ; Set path acceleration scale factor to 4000 steps/unit
@PSCLV4000 ; Set path velocity scale factor to 4000 steps/unit
@SCLD4000 ; Set distance scale factor to 4000 step/unit
PA25 ; Set the path acceleration to 25 units/sec/sec
PAD20 ; Set the path deceleration to 20 units/sec/sec
PV2 ; Set the path velocity to 2 units/sec
D10,5 ; Set the distance to 10 & 5 units on axes 1 & 2, respectively
GOL11 ; Initiate linear interpolated motion on axes 1 & 2
; (see figure below)
Y (Axis 2)
X (Axis 1)
6
5
4
3
2
1
12345678910111213
D1Ø,5
DØ,Ø
Velocity
Time
PV, PA
Linear Interpolated Path Contrasting Motion Profiles of Axes 1 & 2
to Achieve the Linear Interpolated Path
Axis 1
Axis 2
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