| Version 1.1 (R2006b) SimHydraulics® Software Release Notes | |
This table summarizes what's new in Version 1.1 (R2006b):
| New Features and Changes | Version Compatibility Considerations | Fixed Bugs and Known Problems | Related Documentation at Web Site |
|---|---|---|---|
| Yes Details below | No | Bug
Reports Includes fixes | No |
New features introduced in this version are described here.
The Simulink® linmod and dlinmod commands create continuous- or discrete-time linear time-invariant (LTI) state-space models from Simulink models. You can now use these commands to generate an LTI state-space model from a model containing SimHydraulics® components.
There are two basic ways linmod and dlinmod can be used, and the behavior of linearization differs depending on which method is chosen. If linmod(mdl) is called (that is, the arguments for time, state, and input are not provided), then consistent initial conditions are solved for in the same way as on the first step of a simulation. If you call linmod(mdl, t, x, u), it is particularly important to provide it with a consistent state to linearize about. For more information, see Linearizing Simscape™ Models.
A new solver option allows you to specify that simulation starts from a steady state. Steady state means that the system variables are no longer changing with time.
If you select the Start simulation from steady state check box in the Solver block dialog, the solver attempts to find the steady state that would result if the inputs to the system were held constant for a sufficiently large time, starting from the initial state obtained from the initial conditions computation. Although the solver tries to find the particular steady state resulting from the given initial conditions, it is not guaranteed to do so. All that is guaranteed is that if the steady-state solve succeeds, the state found is a steady state (within tolerance). Simulation then starts from this steady state.
Note If the simulation fails at or near the start time when you use the Start simulation from steady state option, consider clearing the check box and simulating with the plain initial conditions computation only. |
Version 1.1 provides the following commands that help you specify the physical units for your system:
Unit names are defined in the pm_units.m file, which is shipped with the product. You can open this file to see how the physical units are defined, and also as an example when adding your own units. This file is located in the directory matlabroot\toolbox\physmod\pm_util\pm_util.
Use the pm_getunits command to get an up-to-date list of units currently defined in your unit registry. Use the pm_adddimension and pm_addunit commands to define additional units.
The new blocks introduced in Version 1.1 are listed below:
| Version 1.2 (R2007a) SimHydraulics® Software | Version 1.0 (R2006a+) SimHydraulics® Software | |
| © 1984-2008- The MathWorks, Inc. - Site Help - Patents - Trademarks - Privacy Policy - Preventing Piracy - RSS |