Servo motor control

[spacetoon34]

Hello,

I tried to control Hs-311 servo motor for position control, but it dosen't work.

The servo is applied by 50 Hz pulses(20 ms), every pulse contain on/off duty, the on duty determine the position of the servo and our servo is deal with ( 0.9ms - 2.1 ms ) on duty to cover the rang (0-180 degree). so i want to generate a train of pulses with 50Hz and 0.1 ms resolution at minimum, and i can control the duty by a knob and output at parallel port 0x378.

|0.9-2.1ms|

________ ________

| | | |

| | | |

___________| |______________| |____________

| 20ms |

That's what i want to out

i will attached to you my try.

please help.

[Mikkel]

I though this had been answered here:

http://forums.lavag.org/index.php?showtopic=6682

-Mikkel

[Mellroth]

QUOTE(spacetoon34 @ Apr 5 2007, 05:08 AM)

Hello,

I tried to control Hs-311 servo motor for position control, but it dosen't work.

The servo is applied by 50 Hz pulses(20 ms), every pulse contain on/off duty, the on duty determine the position of the servo and our servo is deal with ( 0.9ms - 2.1 ms ) on duty to cover the rang (0-180 degree). so i want to generate a train of pulses with 50Hz and 0.1 ms resolution at minimum, and i can control the duty by a knob and output at parallel port 0x378.

Hi,

as Mikkel said, check that other thread for answers.

The VI you supplied won't work in any LabVIEW environment, due to that you are trying to Wait 0.1 ms.

The DBL value (generated from 1/10000), is coerced to a U32 value and is interpreted as 0 (zero), so the wait for next multiple waits for 0 ms.

/J

[spacetoon34]

It seems No solution and No VI