Learn more about SimDriveline

Version 1.2 (R2006a) SimDriveline Software

This table summarizes what's new in V1.2 (R2006a):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes	No	Bug Reports at Web site	No

New features and changes introduced in this version are

• Improved Clutch Locking and Unlocking

• Changed Transmission Template

• Run-time Parameters Enabled for Key Blocks

• Demos Expanded

• Documentation Enhancements

Improved Clutch Locking and Unlocking

The clutch now uses an improved state projection technique when your driveline's dynamic constraints (clutch modes) change. This method minimizes the kinetic energy of the difference between angular velocity states of the system before and after the change. As a result, clutch mode changes now yield more physical results.

See the Controllable Friction Clutch block reference page.

Changed Transmission Template

A new transmission template, CR-CR 4-Speed, has replaced the Simpson 4-Speed transmission block in the Transmission Templates library. The new transmission is constructed and functions somewhat differently from the old one. See the block reference page for more details.

You do not need to update Simpson 4-Speed transmissions in your old models with CR-CR 4-Speed blocks. Instances of transmission templates in your old models are not linked to the Transmission Templates library. They continue as valid subsystems in any models where you use them.

Run-time Parameters Enabled for Key Blocks

Run-time parameters for code generation are now enabled for certain blocks:

• Inertia

• Simple Gear

• Planet-Planet

• Ring-Planet

• Planetary Gear

• Dual-Ratio Planetary

• Ravigneaux

• Differential

Tunable Parameters

Certain blocks have some run-time parameters tunable during simulation. The tunable parameters on each block are associated with normal Simulink blocks in the underlying subsystem.

• Controllable Friction Clutch

• Diesel Engine

• Gasoline Engine

• Hard Stop

• Longitudinal Vehicle Dynamics

• Tire

• Torsional Spring-Damper

Demos Expanded

Seven new demos have been added.

Animated Gear Demos

These demos include five animated gear demos. They illustrate the motion of five complex gear sets. Each has an associated M-file and MAT-file.

• drive_planet_planet_pic

• drive_ring_planet_pic

• drive_planetary_pic

• drive_dual_ratio_planetary_pic

• drive_ravigneaux_pic

Flexible Shaft Demos

The demos also include one flexible shaft demo and one flexible shaft demo library. They illustrate how to model angular flexibility with discrete inertias connected by torsional springs.

• drive_flexible_shaft

• drive_flexible_shaft_element

Documentation Enhancements

The online SimDriveline Help has been enhanced with additional multimedia support.

• The online Help contains mechanical drawings for five complex gear sets.

• The online Help also contains links to five new Web-based AVI animation files that illustrate the motion of these five complex gear sets.

You can access these features most easily by using the Examples index in the Help browser, under Gear Drawings and Prerecorded Animations, respectively.

Version 1.2.1 (R2006b) SimDriveline Software

Version 1.1.1 (R14SP3) SimDriveline Software

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