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VariableDescriptions / StandardVariables

Standard Variables


brake flag [-]

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

buffer [-]

this is the size of the buffer on the data logger

change in heading [degs]

the rate of change in the vehicle's heading

corner radius [m]

the current corning radius

distance [km]

the distance travelled since the beginning of the run

gear [-]

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

heading [degs]

the vehicle's current heading

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.

lean angle [degs]

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

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.

pitch [degs]

this is the body pitch angle calculated from a combination of gyro and GPS data

pitch rate [degs]

this is the rate of the pitch angle measured directly with a gyro

position X [m]

the current x position relative to the current origin

position Y [m]

the current y position relative to the current origin

power output [kW]

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

roll [degs]

this is the body roll angle calculated from a combination of gyro and GPS data

roll rate [degs]

this is the rate of the roll angle measured directly with a gyro

slip angle [degs]

this is the body slip angle calculated from a combination of gyro and GPS data

speed [mph]

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

time [s]

the time since the logging started

time from lap [s]

the time elapsed since the beginning of the current lap

time from sector [s]

the time elapsed since the beginning of the current sector

time slip [s]

the difference in time between the current lap time and the best theoretical lap time

time slip rate [%]

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

torque output [Nm]

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

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

Video frame [-]

this is the video frame for this time sample

wheel speed [mph]

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

yaw [deg]

this is the body yaw angle calculated from a combination of gyro and GPS data

yaw rate [deg/s]

this is the rate of the yaw angle measured directly with a gyro

 

Page last modified on March 12, 2015, at 12:06 PM