Estimate Inertia Tensor

R2026b

Calculate inertia tensor

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Estimate Inertia Tensor block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Aerospace Blockset / Mass Properties

Description

The Estimate Inertia Tensor block calculates the inertia tensor and the rate of change of the inertia tensor.

Linear interpolation is used to estimate the inertia tensor as a function of mass. The rate of change of the inertia tensor is a linear function of rate of change of mass.

Ports

Input

mass — Mass

scalar

Mass, specified as a scalar.

Data Types: double

dm/dt — Rate of change

scalar

Rate of change of mass, specified as a scalar.

Data Types: double

Output

I — Inertia tensor

3-by-3 matrix

Inertia tensor, returned as a 3-by-3 matrix.

Data Types: double

dI/dt — Rate of change

3-by-3 matrix

Rate of change of inertia tensor, returned as a 3-by-3 matrix.

Data Types: double

Parameters

Full mass — Mass

2 (default) | scalar

Gross mass of the vehicle, specified as a double scalar.

Programmatic Use

Block Parameter: fmass

Type: character vector

Values: double scalar

Default: '2'

Empty mass — Empty mass

1 (default) | scalar

Empty mass of the vehicle, specified as a double scalar.

Programmatic Use

Block Parameter: emass

Type: character vector

Values: double scalar

Default: '1'

Full inertia matrix — Full inertia matrix

eye(3) (default) | 3-element matrix

Inertia tensor at gross mass of the vehicle, specified as a three-element matrix.

Programmatic Use

Block Parameter: fI

Type: character vector

Values: double scalar

Default: 'eye(3)'

Empty inertia matrix — Empty inertia matrix

eye(3)/2 (default) | scalar

Inertia tensor at empty mass of the vehicle, specified as a scalar.

Programmatic Use

Block Parameter: eI

Type: character vector

Values: scalar

Default: 'eye(3)/2'

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"aerolibbdyn/Estimate Inertia Tensor"

Example: add_block("aerolibbdyn/Estimate Inertia Tensor","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced before R2006a