Instrumentation
An instrumentation is a user-defined element that consists of request and variables. It is designed to aid users with correlation studies. It modifies the request as per the type of the sensor.
Following sensor types can be added using instrumentation object:
■Acceleration
■Height (w.r.t tire ref)
■Ride Height
■StringPot
■Velocity
Acceleration Sensors
For each acceleration sensor, you must specify the the part to which the sensor attached to, to calculate its acceleration.
The acceleration sensor results uses reqsub 1121 (See Body Acceleration as Measured by an Accelerometer).
Height (w.r.t. tire ref) Sensors
Height sensor will calculate the distance above the ground height or std tire reference. You must specify the the part to which the sensor belongs to.
It also calculate Corrected height using reqsub 1139 (See Corrected Height Sensors).
Ride height Sensors
Ride Height sensor computes vertical distance between two locations. You must specify location on two parts of which you need to calculate the distance.
StringPots
Stringpot are the transducers that measures the normalized distance between two locations. The Normalized Distance Request Subroutine (see Normalized Distance Between MARKERS) is used in the requests.
Tire Compression StringPots
Tire compression stringpots will add additional lumped mass to the model. These stringspots will always connect the body to the unsprung mass at a wheel.
To add this stringpot, select tire compression laser as Yes while creating instrumentation object.
Velocity Sensors
Velocity Sensors measure lateral and longitudinal velocity of the vehicle through Q-head transducers. For each velocity sensor, you must specify the front and rear sensor location.
The velocity sensor results uses reqsub 1116 (see Sideslip Calculations using Q-Heads).
It also has additional requests that uses reqsub 1090 (See Request 1090.
Creating or Modifying Instrumentation
To create/modify Instrumentation:
1. From the Build menu, point to Instrumentation, and then select New/Modify.
3. Select OK.
To modify an instrumentation in the Standard Interface:
1. In Standard Interface, right-click an Instrumentation from model browser (Outputs > Instrumentation), point to its name, and then select Modify. The dialog box has the Instrumentation parameters already loaded.
3. Select OK.