The Mathworks, Inc.

Jeff Wendlandt

Arnav Mukherjee

Nathan Edward Brewton

Victor Chudnovsky

Brian V Mirtich

Andrew C Grace

Jacek Kierzenka

Joe Dipietro

Malay Kumar

David Sampson

A method of synchronizing a textual view, a block diagram view and a three-dimensional view of the system being modeled is provided. Aspects of the model can be displayed via a textual viewer, a block diagram viewer and a 3D viewer in an embodiment. A user may make a change to the block diagram representing the model via the block diagram viewer interface and changes may be dynamically made to the textual representation of the model via the textual viewer and to the 3D representation of the model via the 3D viewer. Exemplary embodiments may maintain synchronization of model views to allow dynamic updating of model views as determined by an environment in which the model views are operating.

System and method for synchronizing and using a three dimensional view with a block diagram model

Methods and systems for translating models generated in one modeling environment into models that can be used in other modeling environments are disclosed. Because models are created using different data formats in different modeling environments, models generated in one modeling environment are generally incompatible with other models in other modeling environments. Therefore, the present invention provides a neutral data format that can store information on models generated in one modeling environment, and that can be used by other modeling environments to create their models. The present invention may export models created in one modeling environment into the neutral data format. The neutral data format may subsequently be imported into other modeling environments in which new models are generated using the information contained in the neutral data format. The present invention also provides animation of the newly generated models by animation clients via open animation interfaces. The open animation interfaces support multiple animation clients at a simultaneous time.

Translating of geometric models into block diagram models

In an embodiment, an element, that represents an entity in a system, is generated. The generated element may be incorporated in a network that represents the system. The generated element may include geometry information about a geometry of the entity. The geometry information may be used in one or more computations associated with a simulation or an analysis of the system. The element may have a frame port that exposes a frame. The frame may represent at least a position and an orientation in a two dimensional or three dimensional space with respect to another frame in the network. The other frame in the network may be a reference frame that may be defined by a 'world' that the system resides in. The generated element may be incorporated into the network by connecting the frame port to the network.

Representing geometry of a system in a modeling environment

A device may include communication logic to receive a request to perform an activity on behalf of a client, where the activity is related to a primary application and a secondary application. The communication logic may send a response that allows the client to perform the activity when the client is authorized. The device may include evaluation logic to determine whether the client is related to the primary license and to determine whether a secondary license related to the secondary application is available. The evaluation logic may allocate the available secondary license to the client for use with the secondary application when the secondary license is available. The evaluation logic may authorize the client to perform the activity when the secondary license is allocated to the client.

Parameter based operation

The present invention improves in one aspect the accuracy, efficiency, and robustness of fixed-step solvers when simulating a physical system that does not change in energy at the critical event. The present invention uses the energy of the error as the figure of merit in finding the first state of the system under the new constraints. The present invention enables a fixed-step solver to be more robust even when the critical event falls between two time samples. The present invention may also be applied to variable-step solvers. Moreover, the present invention may also be used to simulate a physical system when the energy changes at the critical event in the physical system.

State projection via minimization of error energy

A method of synchronizing a block diagram view of a system being modeled with a three-dimensional view of the system being modeled and with the underlying block diagram model data is disclosed. Changes in the block diagram model data are reflected in both views to the degree that the views contain a point of correspondence. User selected changes to the block diagram view of the system being modeled cause changes in the underlying model data. A view generator examines the model data to determine if a point of correspondence equivalent to the changed portion of the block diagram view exists in the three dimensional view. If a point of correspondence exists in the three-dimensional view the view is updated to reflect the changes in the block diagram view. Similarly, user selected changes in the three-dimensional view cause changes in the underlying block diagram model data. The view generator examines the model data to determine if a point of correspondence equivalent to the changed portion of the three dimensional view exists in the block diagram view. In the event that a point of correspondence is found, the block diagram view is updated.

Methods and systems for translating models generated in one modeling environment into models that can be used in other modeling environments. In particular, information regarding a relationship between components of models in one modeling environment is translated into corresponding elements of models in other modeling environments. In some embodiments of the present invention, for example, mate information between rigid parts in geometric models may be translated into corresponding elements in other modeling environments. The mate information between parts in geometric models may be translated into information representing the degrees of freedom (DoFs) of the parts in the geometric models. The information on the DoFs of the parts in the geometric models may be utilized to build up corresponding elements in other modeling environments that represent the relationship between the parts of the geometric models.

Translating mates in geometric models into joint blocks in block diagram models

A graphical modeling environment is provided for a user to build a model for physical systems using blocks connected through signals. The user may build a model with the flexibility of user-defined implementations available in the graphical modeling environment and with the architecture provided by modeling tools for modeling physical systems. A two-way connection port may be provided for adopting an architecture that supports modeling of physical systems in the graphical modeling environment. The user may use the two-way connection port to make the model built in the graphical modeling environment look architecturally like a model built using physical modeling tools.

Two-way connection in a graphical model

Methods and systems for translating models generated in one modeling environment into models that can be used in other modeling environments are disclosed. Models are created using different data formats in different modeling environments. These data formats are generally incompatible with each other. Therefore, the present invention provides a neutral data format that can store information relating to models generated in one modeling environment, and that can be used by other modeling environments to create their models. The present invention may export models created in one modeling environment into the neutral data format. The neutral data format may subsequently be imported into other modeling environments in which new models are generated using the information contained in the neutral data format. The present invention also provides animation of the newly generated models by animation clients via open animation interfaces that support multiple animation clients at a simultaneous time.

Translating of geometric models into block diagrams

Methods for modeling and executing systems in a linearly-implicit formulation of ordinary differential equations (ODEs) or differential algebraic equations (DAEs) are provided in modeling environments. The modeling environments may include block diagram modeling environments, such as time-based block diagram modeling environments. The block diagram modeling environments may include or be coupled to other modeling environments, such as physical modeling environments, so that models created in other modeling environments may also be introduced and solved in the linearly-implicit formulation of ODEs or DAEs in the block diagram modeling environments. Models describing the systems in the linearly-implicit formulation of ODEs or DAEs may also be created directly by users using user-defined blocks in the block diagram modeling environments. The present invention provides solvers for solving the system described in the linearly-implicit formulation of DAEs as well as ODEs in the block diagram modeling environment.

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Newton, MA, United States of America

Jeff Wendlandt