Version 2.7 (R2007b) SimMechanics™ Software Release Notes

Version 2.7 (R2007b) SimMechanics Software

This table summarizes what's new in Version 2.7 (R2007b):

New features and changes introduced in this version are

• Interfacing with One-Dimensional Simscape Domains

• SimMechanics State Names Now Available to Simulink and Real-Time Workshop

• Controlling Redundant Constraint Analysis with New Tolerance Setting

• New Demos

• Code Generation Documentation Consolidated to Simscape User's Guide

Interfacing with One-Dimensional Simscape Domains

The Prismatic-Translational Interface and Revolute-Rotational Interface blocks of the new Interface Elements library allow you to connect a SimMechanics Prismatic or Revolute joint primitive to a Physical Networks line connected to Simscape blocks. The Prismatic-Translational Interface and Revolute-Rotational Interface blocks transfer mechanical velocities and forces/torques as Physical Networks cross- and through-variables, respectively, without energy loss, along or around axes that you can define.

Several new demos illustrate the use of the Interface Elements blocks. See New Demos following.

SimMechanics State Names Now Available to Simulink and Real-Time Workshop

You can access the names of the mechanical states of your SimMechanics models through the mech_stateVectorMgr command. The names of these states and the SimMechanics blocks that define them are now available to Simulink and appear in the outputs of model simulations. They also appear in simulations based on code generated with Real-Time Workshop^®.

See the Simulink and Real-Time Workshop documentation for further details about states.

Controlling Redundant Constraint Analysis with New Tolerance Setting

You can now adjust the sensitivity of the SimMechanics redundant constraint analysis in the Constraints tab of the Machine Environment block, which allows you to choose between automatic constraint redundancy analysis or specifying a constraint redundancy tolerance explicitly.

Certain mechanical configurations are sensitive to the constraint redundancy tolerance and can spuriously lose or gain degrees of freedom if this tolerance is adjusted incorrectly. See Configuring Methods of Solution, How SimMechanics Software Works, and Troubleshooting Simulation Errors in the Running Mechanical Models chapter of the SimMechanics User's Guide.

New Demos

Nine new demos have been added.

Interface Blocks

These demos illustrate how to use the new Interface Elements blocks. See Interfacing with One-Dimensional Simscape Domains preceding.

• mech_interface_crate_transfer

• mech_interface_dspring_damper

• mech_interface_hyd_cylinder

• mech_interface_hyd_slidercrank

• mech_interface_rot_spr_damper

• mech_interface_trans_spr_damper

Car Modeling

These new demos provide examples of sophisticated automotive modeling.

• mech_car_handling

• mech_car_kinematics

These demos shipped in the Version 2.6 (R2007a) SimMechanics product.

Code Generation Documentation Consolidated to Simscape User's Guide

Documentation of code generation features common to all vertical Physical Modeling products based on Simscape software has been consolidated to the Simscape User's Guide. The SimMechanics User's Guide continues to document uniquely SimMechanics features related to code generation.

Version 2.7.1 (R2008a) SimMechanics Software

Version 2.6 (R2007a) SimMechanics Software