Torque mode application specific attributes - Revision history

Tero K: /* Argon simulator wheel special firmware parameters */

2016-04-21T21:10:21Z

‎Argon simulator wheel special firmware parameters

Tero K at 13:49, 23 July 2015

2015-07-23T13:49:23Z

Tero K: /* Argon simulator wheel special firmware parameters */

2015-07-23T13:22:45Z

‎Argon simulator wheel special firmware parameters

Tero K: /* Supported drives */

2015-07-23T13:04:32Z

‎Supported drives

Tero K: /* Supported drives */

2015-06-10T09:24:10Z

‎Supported drives

Tero K: Created page with "Some of the GD drives support ''torque mode application specific attributes'' that alter the operation of torque mode. Attributes are controlled by one parameter (parameter ad..."

2015-05-04T11:48:12Z

Created page with "Some of the GD drives support ''torque mode application specific attributes'' that alter the operation of torque mode. Attributes are controlled by one parameter (parameter ad..."

New page

Some of the GD drives support ''torque mode application specific attributes'' that alter the operation of torque mode. Attributes are controlled by one parameter (parameter address 920) which is not currently displayed in user Granity interface directly. Instead it can be set and read with this method: [[Reading and writing an arbitrary parameter with Granity]].
==Functionality==
*Ability to limit motor angle where torque command is obeyed. Generation of torque will stop for motor angles greater than +/-N encoder counts (where 0 angle is the angle after power-on)
*Ability to scale torque setpoint based on analog input (0-5V range sets torque scale between 10-100%)
==Usage==
Currently this parameter is not visible in Granity but it can be directly accessed by the dialog that pops-up by shortcut Ctrl+P. Usage:
#Open Granity and connect to the drive
#Press Ctrl+P and enter parameter number 920 to one of the left side fields and the calculated parameter value to the right side field<br/>[[File:Torq attributes ctrl p.png]]
#Click Apply from the main window

==Calculation of parameter==
This parameter is a bitfield defined as: bits 0-7: option bits, bits 8-29: rotation angle limit (in feedback counts).

Overview:
*0 = disabled, standard drive operation
*nonzero = calculate value by: round(allowed_rotation_in_counts/256)*256 + modebits

Where modebits is a bitfield defined as:
*bit 0: input scaling. if true, analog input 0-5V sets torque scale to 10-100%. Note: cant use analog input for torque setpoint now.
*bits 1-7: reserved for future use.

Example 1: we want rotation limit of 8000 encoder counts (for each direction) and no scaling input, we use value 7936.

Example 2: we want rotation limit of 8000 encoder counts (for each direction) and torque command scaling input, we use value 7937

Example 3: no rotation limit but just scaling is on: use value 1

==Supported drives==
*IONI from FW version 1.2.0
*ARGON support planned from version 1.5.0

[[category:IONI features]]
[[category:OpenSimWheel]]

@@ Line 38: / Line 38: @@
 ;6111 - limit of motor rotation
 :When value is non-zero, it will limit angle where torque is produced. I.e. value 10000 will allow rotation of +/-10000 encoder counts and outisde of that range, torque will be zero.
+{{picturebox|argonracingsafetyparams.png|326px|caption=Example safety parameters for Argon in [[Force feedback system (FFB)]]}}
 [[Category:Force feedback system]]
 [[Category:IONI_features]]

@@ Line 39: / Line 39: @@
 :When value is non-zero, it will limit angle where torque is produced. I.e. value 10000 will allow rotation of +/-10000 encoder counts and outisde of that range, torque will be zero.
-[[category:IONI features]]
+[[Category:Force feedback system]]
-[[category:OpenSimWheel]]

@@ Line 32: / Line 32: @@
 ==Argon simulator wheel special firmware parameters==
-Simulator edition firmware has two torque mode specific attributes:
+[[Force feedback system (FFB)]] edition firmware has two torque mode specific attributes:
 ;6110 - limit of motor speed

@@ Line 28: / Line 28: @@
 ==Supported drives==
 *IONI from FW version 1.2.0
-*ARGON support planned from version 1.5.0
 [[category:IONI features]]
 [[category:OpenSimWheel]]