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VariableDescriptions / Common

Common variables


long accel [g]

On any product except the SPEEDBOX INS this is the vehicle's longitudinal acceleration measured directly from the accelerometers (accelerating/breaking g-force)
On the SPEEDBOX INS this is the vehicle longitudinal acceleration neglecting effects of gravity, the differential of the forwards/backwards velocity.

brake flag [-]

the vehicle's longitudinal acceleration flag measured directly from the accelerometers (accelerating/braking indicator)

lat accel [g]

On any product except the SPEEDBOX INS this is the vehicle's lateral acceleration measured directly from the accelerometers (cornering g-force)
On the SPEEDBOX INS this is the vehicle lateral acceleration neglecting effects of gravity, the differential of the lateral velocity.

vector accel [g]

Vector acceleration is the total acceleration calculated by combining the longitudinal and lateral acceleration, note that vertical acceleration is not considered. It is calculated using:

Vector acceleration = square root(lateral * lateral + longitudinal * longitudinal)

vert accel [g]

the vechicle's vertical acceleration

RPM [rpm]

The engine rotational speed

speed [mph]

the vehicle's speed measured by combining the data from the GPS receiver and the accelerometers

wheel speed [mph]

an estimate of the vehicle's speed from a combination of the wheel speed pickups

distance [km]

the distance travelled since the beginning of the run

power output [kW]

an estimate of the vehicles power at the rear wheels calculated from current speed and acceleration

torque output [Nm]

an estimate of the vehicles torque at the rear wheels calculated from current speed/acceleration/RPM

gear [-]

the current gear that the car is in calculated from the current speed and RPM

position X [m]

the current x position relative to the current origin

position Y [m]

the current y position relative to the current origin

time slip rate [%]

the rate of change of time between the current lap time and the best theoretical lap time

change in heading [degs]

the rate of change in the vehicle's heading

corner radius [m]

the current corning radius

lean angle [degs]

the estimate bicycle lean angle calculaed from the turning radius. Assumes tha the COG remains constant

 

Page last modified on December 13, 2018, at 04:55 PM