tireData Properties

Properties for tireData object

Since R2023b

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tireData properties contain information that describe tire dynamics. Use dot notation to refer to a particular object and property. 

tData = tireData(filepath);
coordSystem = tData.CoordinateSystem;

Note

Nonempty properties specified as a column vector must all be the same length.

Read-Only Properties

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This property is read-only.

Coordinate system, specified as "ISO", "SAE", or "H". For more information, see Tire and Wheel Coordinate Systems.

Note

Use the coordinateTransform function to transform tire data channels to a specified coordinate system.

This property is read-only.

Data file name, specified as a string.

This property is read-only.

Data file path, specified as a string.

Elapsed Time and Segment

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Elapsed time, specified as a column vector with nonnegative values, in s.

Data Types: double

Segment elapsed time, specified as a column vector with nonnegative values, in s.

Data Types: double

Test segment number, specified as a column vector.

Data Types: double

Measurement number, specified as a column vector.

Data Types: double

Forces, Moments, and Pressure Information

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Longitudinal force, specified as a column vector, in N.

Data Types: double

Lateral force, specified as a column vector, in N.

Data Types: double

Normal force, specified as a column vector, in N.

Data Types: double

Overturning moment, specified as a column vector, in Nm.

Data Types: double

Rolling moment, specified as a column vector, in Nm.

Data Types: double

Self-aligning moment, specified as a column vector, in Nm.

Data Types: double

Wheel torque, specified as a column vector, in Nm.

Data Types: double

Inflation pressure, specified as a column vector with nonnegative values, in kPa.

Data Types: double

Slip Information

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Slip angle, specified as a column vector, in rad.

Data Types: double

Inclination angle, specified as a column vector, in rad.

Data Types: double

Longitudinal slip, specified as a column vector, dimensionless.

Data Types: double

Total tire spin, specified as a column vector, in 1/m.

Data Types: double

Turn slip, specified as a column vector, in 1/m.

Data Types: double

Velocity Information

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Longitudinal velocity, specified as a column vector, in m/s.

Data Types: double

Lateral velocity, specified as a column vector, in m/s.

Data Types: double

Total velocity, specified as a column vector, in m/s.

Data Types: double

Wheel spin velocity, specified as a column vector, in rad/s.

Data Types: double

Turn slip velocity, specified as a column vector, in rad/s.

Data Types: double

Length Information

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Loaded radius, specified as a column vector, in m.

Data Types: double

Effective radius, specified as a column vector, in m.

Data Types: double

Dynamic rolling radius, specified as a column vector, in m.

Data Types: double

Radial deflection, specified as a column vector, in m.

Data Types: double

Travel distance, specified as a column vector, in m.

Data Types: double

Longitudinal relaxation length, specified as a column vector, in m.

Data Types: double

Lateral relaxation length, specified as a column vector, in m.

Data Types: double

Half the contact patch length, specified as a column vector, in m.

Data Types: double

Half the contact patch width, specified as a column vector, in m.

Data Types: double

Temperature Information

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Ambient temperature, specified as a column vector, in degC.

Data Types: double

Test surface temperature, specified as a column vector, in degC.

Data Types: double

Tread surface temperature (inside shoulder), specified as a column vector, in degC.

Data Types: double

Tread surface temperature (center rib), specified as a column vector, in degC.

Data Types: double

Tread surface temperature (outside shoulder), specified as a column vector, in degC.

Data Types: double

Sidewall surface temperature, specified as a column vector, in degC.

Data Types: double

Innerliner surface temperature, specified as a column vector, in degC.

Data Types: double

Tire cavity air temperature, specified as a column vector, in degC.

Data Types: double

Other

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User data channel to store user-defined data, specified as a column vector.

Data Types: double

Non-numeric data, specified as a column vector. You can process data from tireData objects by using this property to specify the criteria argument in the split and crop functions.

Example: label=["Warmup", "Warmup", "Warmup", "Slip angle sweep", "Slip angle sweep",...]

Data Types: string

Tire Information

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Tire manufacturer, specified as a string scalar.

Data Types: string

Tire line, specified as a string scalar.

Data Types: string

Tire category, specified as a string scalar.

Data Types: string

Tire construction number, specified as a string scalar.

Data Types: string

Tire serial number, specified as a nonnegative scalar, unitless.

Data Types: double

Tire size, specified as a string scalar.

Example: TireSize="275/65R18"

Data Types: string

Section width, specified as a nonnegative scalar, in mm.

Example: SectionWidth=275

Data Types: double

Aspect ratio, specified as a nonnegative scalar, in percent.

Example: AspectRatio=65

Data Types: double

Rim diameter, specified as a nonnegative scalar, in inches.

Example: RimDiameter=18

Data Types: double

Overall diameter, specified as a nonnegative scalar, in m.

Example: OverallDiameter=0.815

Data Types: double

Load index, specified as a nonnegative scalar, unitless.

Example: LoadIndex=116

Data Types: double

Speed symbol, specified as a string scalar.

Data Types: string

Stamped max load, specified as a nonnegative scalar, in kg.

Example: StampedMaxLoad=1250

Data Types: double

DOT tire identification number, specified as a string scalar.

Data Types: string

Tire Mass and Inertia

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Tire mass, specified as a nonnegative scalar, in kg.

Data Types: double

Tire rotational inertia about the x-axis, specified as a nonnegative scalar, in kg*m^2.

Data Types: double

Tire rotational inertia about the y-axis, specified as a nonnegative scalar, in kg*m^2

Data Types: double

Tire rotational inertia about the z-axis, specified as a nonnegative scalar, in kg*m^2.

Data Types: double

Tire Test Information

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Test data and time, specified as a datetime scalar.

Test facility, specified as a string scalar.

Data Types: string

Test machine, specified as string scalar.

Data Types: string

Test request identifier, specified as a string scalar.

Data Types: string

Test method, specified as a string scalar.

Data Types: string

Test rim width, specified as a nonnegative scalar, in inches.

Data Types: double

Test rim type, specified as a string scalar.

Data Types: string

Nominal test load, specified as a nonnegative scalar, in N.

Data Types: double

Nominal inflation pressure, specified as a nonnegative scalar, in Pa.

Data Types: double

Nominal slip angle, specified as a scalar, in rad.

Data Types: double

Nominal inclination angle, specified as a scalar, in rad.

Data Types: double

Nominal longitudinal slip, specified as a scalar, unitless.

Data Types: double

Inflation pressure regulation method, specified as a string scalar.

Data Types: string

Test surface description, specified as a string scalar.

Data Types: string

Test surface condition description, specified as a string scalar.

Data Types: string

Test surface curvature, specified as a scalar, in 1/m.

Data Types: double

Tire and wheel assembly notes, specified as a string scalar.

Data Types: string

Run number, specified as a scalar.

Data Types: double

Sweep number, specified as a scalar.

Data Types: double

Comments about test, specified as a string vector.

Data Types: string

Version History

Introduced in R2023b

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See Also