Posted on July 17, 2013 at 23:38Hi Everybody,
I use
the
integrated
L6470
to control
a stepper motor
with
the following characteristics:
Step angle
1.8
�
Holding Torque
0.06Nm
Rated current
0.67
A
Rod diameter
5mm
Frame size
28 x
28mm
Rod length
18mm
Permanent magnet
stepper motor
,
hybrid
Number of
wires
4
Resistance
5.6?
per phase
Rated voltage
3.8 V
The
integrated
L6470
is powered
at 12V
but I
would like to make
sure that
the motor voltage
is
3.8V
.
I saw on the
datasheet
that I can adjust
the motor voltage
with
the
Phase
current control
.
Unfortunately
I didn't
have
clear about the
parameters
of the equations
to derive
the value
Kval
.
Can anyone explain
me how to get the
value
Kval
?
The motor
is controlled with a
microcontroller
STM32F103
via
SPI
.
I communicate
the
parameters
KVAL_RUN
,
KVAL_ACC
,
KVAL_DEC
with SPI.
Thanks a lot
Bye
#stepper-motor-driver #l6470
