30 results about "System level modeling" patented technology

The micro inertial sensor kernel mold establishing method and kernel library belongs to the field of design technology of micro electromechanical system. Technologically, the present invention features that electromechanical micro structure behavior mold is first established by means of combined mechanical behavior mold establishing method and force coupling behavior mold establishing method and reusable kernel for micro inertial sensor is then formed according to kernel mold establishing method. The present invention also includes kernel library established based on the said method, the establishment of parameter kernel molds for typical functional structural parts of MEMS inertial devices in 3D space, and kernel library as the integration of kernel molds. The present invention has universal theoretical significance and may provide technological support for research and development of micro gyro, micro accelerometer, etc.

The present invention provides a changing cross section clamped beam system-level macro model building method of a micro-electromechanical system, and relates to a system-level modeling method of the micro-electromechanical system (MEMS) device. The elastic reverting force correction term are introduced into the one-dimensional signal flow model of the changing cross section clamped beam, so as to transform the two-dimensional effects generated by the bending of the wide part of the beam into the one-dimensional model correction; then the accuracy of the model is higher than the model of the one-dimensional signal flow diagram; thus the model and the method can conveniently achieve the system-level simulation of the changing cross section beam with two ends of different sizes, and analyze the static and dynamic behaviors of the changing cross section beam.

Methods, systems, and machine readable medium for multi-thread safe system level modeling simulation (SLMS) of a target system on a host system. An example of a SLMS is a SYSTEMC simulation. During the SLMS, SLMS processes are executed in parallel via a plurality of threads. SLMS processes represent functional behaviors of components within the target system, such as functional behaviors of processor cores. Deferred execution may be used to defer execution of operations of SLMS processes that access a shared resource. Multi-thread safe direct memory interface (DMI) access may be used by a SLMS process to access a region of the memory in a multi-thread safe manner. Access to regions of the memory may also be guarded if they are at risk of being in a transient state when being accessed by more than one SLMS process.

Methods, systems, and machine readable medium for multi-thread safe system level modeling simulation (SLMS) of a target system on a host system. An example of a SLMS is a SYSTEMC simulation. During the SLMS, SLMS processes are executed in parallel via a plurality of threads. SLMS processes represent functional behaviors of components within the target system, such as functional behaviors of processor cores. Deferred execution may be used to defer execution of operations of SLMS processes that access a shared resource. Multi-thread safe direct memory interface (DMI) access may be used by a SLMS process to access a region of the memory in a multi-thread safe manner. Access to regions of the memory may also be guarded if they are at risk of being in a transient state when being accessed by more than one SLMS process.

The invention discloses an implementation method and device for a dynamic interactive modeling tool, and the method comprises the steps: obtaining at least one modeling element in the field of integrated avionics system software, the attribute of the modeling element, and the relation between all modeling elements, wherein the modeling elements comprise subsystem-level modeling elements and system-level modeling elements; according to the subsystem-level modeling elements and the system-level modeling elements, respectively constructing a time sequence primitive model and an interaction summary primitive model in a general modeling environment; and analyzing the time sequence primitive model and the interaction summary primitive model, and respectively generating a time sequence diagram modeling environment and an interaction summary diagram modeling environment. According to the time sequence diagram modeling environment and the interactive summary diagram modeling environment generated by the method, developers can quickly build a software model of the comprehensive avionics system. The modeling environment can meet the requirements of interaction and collaborative modeling amonga plurality of subsystems, and the built software model can be further converted into other mathematical models to support verification during design.

Methods, systems, and machine readable medium for multi-thread safe system level modeling simulation (SLMS) of a target system on a host system. An example of a SLMS is a SYSTEMC simulation. During the SLMS, SLMS processes are executed in parallel via a plurality of threads. SLMS processes represent functional behaviors of components within the target system, such as functional behaviors of processor cores. Deferred execution may be used to defer execution of operations of SLMS processes that access a shared resource. Multi-thread safe direct memory interface (DMI) access may be used by a SLMS process to access a region of the memory in a multi-thread safe manner. Access to regions of the memory may also be guarded if they are at risk of being in a transient state when being accessed by more than one SLMS process.

The invention discloses a temperature parameterized reduced-order modeling method for a micro-electromechanical system, and belongs to the field of micro-electromechanical system design and model order reduction. The method comprises the following steps: extracting quality, rigidity and temperature stress rigidity matrixes, and establishing a two-order dynamical equation related to temperature; constructing an orthogonal mapping matrix V; and projecting the primary two-order dynamical equation to a subspace in which the orthogonal mapping matrix V is positioned so as to acquire a temperature parameterized low-order model. The reduced-order method can greatly reduce the freedom scale of the primary model through an order reduction algorithm so as to improve the system-level modeling and simulating speed based on the reduced-order model. Simultaneously, by adopting the matrix matching principle, transfer functions of the reduced-order model and the primary model can be approximate betterso as to have higher precision. During order reduction, a projection matrix irrelative with parameters can be generated, and finally, a temperature parameter in the primary system is reserved in thelow-order model.

The invention relates to the technical field of electro-hydraulic servo valve simulation systems, in particular to a simulation modeling method of electro-hydraulic servo valve based on a Modelica language, which includes the following steps: 1, system disassembly; 2, component level modeling; 3, subsystem level modeling; 4, system level modeling; 5, simulation control; and 6, simulation result demonstration. The simulation modeling method of the electro-hydraulic servo valve based on the Modelica language utilizes multi-territoriality, non-causality and object orientation of the Modelica language to perform secondary development, an obtained electro-hydraulic servo valve simulation model can faithfully reflect operating conditions and characteristics of the electro-hydraulic servo valve and substitute a electro-hydraulic servo system to conduct further system analysis and design, and the simulation modeling method can provide excellent analysis tools and analysis approaches for servo researching and working personnel.

The invention provides a modeling method of an LED lamp considering correlation between modules. The method comprises the following steps: performing reliability structure analysis of an LED Lamp; building a performance degradation mechanism and a mathematical model thereof of the LED; building a performance degradation and mathematical model thereof of a power module; calculating the influence of random shocks on each structure of an LED lamp system; considering the correlation of performance degradation and system-level modeling of directional propagation; performing reliability design optimization of the LED lamp; and obtaining a performance degradation model. Compared with the prior art, the modeling method of the LED lamp considering the correlation between the modules provided by the invention has the following beneficial effects: multi-objective optimization is achieved by using an evolutionary algorithm, a non-dominated solution set of optimization problems is obtained, and lamp manufacturing enterprises choose the most suitable solution in the non-dominated solution set. The method provides a powerful system reliability design and optimization tool for the lamp manufacturing enterprises.

A modeling method of reusable parameterized component for space continuous deformation MEMS includes confirming each dynamic control equation and boundary condition equation of MEMS device, carrying out space discretization on dynamic control equation and converting said control equation to be constant-differential equation set, utilizing hardware description language of analog and mixed signal to carry out coding for realizing function description, plotting schematic diagram of MEMS device and connecting said diagram with code to form MEMS device being called in system modeling and in simulation analysis.

The invention discloses a method for modeling a variable section beam in micro-electronic-mechanical system (MEMS) level design, which belongs to the field of design of MEMSs. The method comprises the following main processes: firstly, establishing a local coordinate system of a variable section beam; then respectively deducting a rigidity matrix, a damping matrix and a quality matrix of the variable section beam in the local coordinate system according to a structural mechanics and structural matrix analyzing theory and establishing a second order kinetic equation of the variable section beam by the matrixes; and finally coding the second order kinetic equation by a hardware description language and realizing the modeling of a parameterized system level assembly of the variable section beam. The method for modeling the variable section beam of which the width is linearly changed along with the length direction in the system level solves the problem that the system level simulation design can not be performed on the current MEMS device in the structure.

The micro inertial sensor kernel mold establishing method and kernel library belongs to the field of design technology of micro electromechanical system. Technologically, the present invention features that electromechanical micro structure behavior mold is first established by means of combined mechanical behavior mold establishing method and force coupling behavior mold establishing method and reusable kernel for micro inertial sensor is then formed according to kernel mold establishing method. The present invention also includes kernel library established based on the said method, the establishment of parameter kernel molds for typical functional structural parts of MEMS inertial devices in 3D space, and kernel library as the integration of kernel molds. The present invention has universal theoretical significance and may provide technological support for research and development of micro gyro, micro accelerometer, etc.

The invention discloses a deflation modeling method of a micro-electronic-mechanical-system (MEMS) which contains a plurality of input ports. A three-dimension solid model of the structure is established according to the parameters of structure design, modal analysis is carried out by using a finite element method, the quality and the rigidity matrix of the structure is extracted from analysis results, and a second order dynamics action equation of the structure is converted into a first order state equation after being established; an input matrix B is uniformly splitted into k blocks by rows to obtain the state equation of the structure after splitting; deflation is carried out to the application subblock of the (i)th sub-system to obtain the macro model state equation of the (i)th sub-system; the integral macro model of the original system can be obtained after the macro models of all the sub-systems are superposed according to output. The method speeds up the MEMS system level modeling and simulation based on the macro models, thus improving the design efficiency of the MEMS.

The invention discloses a management and control method of a distributed control system based on an asset management shell, and relates to the technical field of control and management model integration in industrial systems. Design an asset management shell integration model based on the IEC 61499 standard, integrate the control model into the management model, complete the integrated model of comprehensive information, management and control, and bring a unified expression; design the mapping rules between specific model elements , including static and dynamic, to ensure the rationality and correctness of the organization and interaction of elements at different levels; to design a general-purpose mapping structure in a modular way to adapt to the needs of different scenarios as much as possible. Not only can information management models be established for different components in the industry, but also an executable system-level modeling control language can be integrated to realize the management and control of components at the same time.

The invention discloses a method for modeling a variable section beam in micro-electronic-mechanical system (MEMS) level design, which belongs to the field of design of MEMSs. The method comprises thefollowing main processes: firstly, establishing a local coordinate system of a variable section beam; then respectively deducting a rigidity matrix, a damping matrix and a quality matrix of the variable section beam in the local coordinate system according to a structural mechanics and structural matrix analyzing theory and establishing a second order kinetic equation of the variable section beamby the matrixes; and finally coding the second order kinetic equation by a hardware description language and realizing the modeling of a parameterized system level assembly of the variable section beam. The method for modeling the variable section beam of which the width is linearly changed along with the length direction in the system level solves the problem that the system level simulation design can not be performed on the current MEMS device in the structure.

The present invention provides a changing cross section clamped beam system-level macro model building method of a micro-electromechanical system, and relates to a system-level modeling method of the micro-electromechanical system (MEMS) device. The elastic reverting force correction term are introduced into the one-dimensional signal flow model of the changing cross section clamped beam, so as to transform the two-dimensional effects generated by the bending of the wide part of the beam into the one-dimensional model correction; then the accuracy of the model is higher than the model of the one-dimensional signal flow diagram; thus the model and the method can conveniently achieve the system-level simulation of the changing cross section beam with two ends of different sizes, and analyze the static and dynamic behaviors of the changing cross section beam.

The invention relates to the technical field of simulation systems of amplitude-changing mechanisms of automobile cranes, particularly to a Modelica language-based simulation modeling method of the amplitude-changing mechanism of the automobile crane. The Modelica language-based simulation modeling method comprises the following steps: 1) dismantling the system; 2) performing component-level modeling; 3) performing sub-system-level modeling; 4) performing system-level modeling; 5) performing simulation control; and 6) finally demonstrating a simulation result. The Modelica language-based simulation modeling method disclosed by the invention adopts a modeling language Modelica of a multi-domain uniform object-oriented physical system for performing mechanical, hydraulic, control and other multi-domain coupled modeling and simulation on the amplitude-changing mechanism of the automobile crane, and various performance curves in two models, namely control and non-control, are analyzed and compared, so that the model adopting the method is proved to be capable of greatly improving the stability of the whole machine in comparison with mechanical and hydraulic models, and avoiding great hydraulic shock and vibration.