Feedback Channels

A feedback channel is a special user-defined element that contains a series of entities such as Adams Solver measures and Adams View variables. Creating a feedback channel effectively corresponds to creating a measure (Adams Solver variable). It is then possible to display the measure. For information on creating, displaying, and managing strip charts based on measures, see the Adams View online help.
Feedback channels are used in the __MDI_SUSPENSION_TESTRIG for the controller. Your template-based product creates two channels:
Raw_channel - Controls an absolute value.
Offset_channel - Controls desired inputs for a deviation.
You can create feedback channels either as a symmetrical pair or individually.
Each feedback channel has an application area and a unique identifier. The application area provides information about the intended purpose of the feedback channel. For example, you may want to specify an application area for engine velocity with the identifier specifying that the velocity will be at the crank. The following are possible naming schemes:
Application area = engine_velocity
Identifier = engine_velocity_crank
If you create feedback channels as a symmetrical pair, then you can define separate left and right functions. You can use the Function Builder to define functions.
You can offset the raw signal of the feedback channel by a desired real value. Entering a real number in this text box causes the Template Builder to create an additional measure whose function is the same as the raw channel, but it is offset by the specified value.

Creating or Modifying User-Function Feedback Channel

To create or modify a user-function feedback channel:
1. From the Build menu, point to Feedback Channels, point to User Function, and then select New/Modify.
2. Press F1 and then follow the instructions in the dialog box help for Create/Modify User-Function Feedback Channel.

Setting Function

You can use the set function menu to modify or replace the function that you defined. Note that you have the option to specify a routine instead of a function.
To set feedback channel function:
1. From the Build menu, point to Feedback Channels, and then select Set Function.
2. Press F1 and then follow the instructions in the dialog box help for Set Feedback Channel Function.

Setting Offset

You can use the set offset menu to modify the offset applied to the raw measured channel. You can toggle the activity of the offset on or off.
To set feedback channel offset:
1. From the Build menu, point to Feedback Channels, and then select Set Offset.
2. Press F1 and then follow the instructions in the dialog box help for Set Feedback Channel Offset.