3 results about "Model-based design" patented technology

The application discloses a global finite time convergence permanent magnet synchronous motor control method based on a backstepping method framework, comprising the following steps: 1) on a MATLAB platform of an upper computer, a permanent magnet synchronous motor control system is designed based on model-based design by using MATLAB / Simulink software; 2) a hardware circuit of a permanent magnet synchronous motor vector control system is built; 3) a finite time nonlinear extended state observer NLESO is designed; and 4) under a recursive control framework of the backstepping method, a super-spiral sliding mode algorithm with a second-order sliding mode characteristic is fused, and a globally finite time stable compound controller is designed. By integrating the observer convergence and the double closed loop stability, the application effectively suppresses the 'chattering' phenomenon of the traditional sliding mode control, and significantly improves the dynamic response speed, the steady state tracking accuracy and the anti-interference robustness of the motor in the whole working condition range.

The invention discloses a model-based top layer development simulation design method and system, and relates to the field of high-speed digital signal processing, and the method comprises the steps: developing a signal processing modeling and verification tool; dividing the model information base into three model levels, namely a basic algorithm model, a technical system model and a system function model; configuring a model information base and screening required sub-models; newly building a project; screening related projects; a project needing joint simulation is selected and loaded; connecting input and output interfaces of each sub-model corresponding to the current project and carrying out joint simulation operation to generate a top-layer file and a batch processing bat file; storing the sub-model, the top-layer file and the batch processing bat file in a specified path and performing simulation; the simulation result file is analyzed, and input and output waveforms are displayed. According to the method, a model-based design idea is adopted, and accurate model description is adopted in each stage in the development process, so that the scientific research efficiency is improved, the development cost is reduced, and the success rate of a project is improved.

Inspection of industrial products entails the “Model Based Design” paradigm with an apparatus associated with a digital clone of the real acquisition system. The digital clone reproduces in a virtual environment the features of said system and of the product affected by anomalies to be inspected.By generating virtual images of the product through simulations on said digital clone and processing virtual images through a vision system including a novel data fusion module, it is possible to define the optimal architecture and parameterization of the real acquisition system that maximize the likelihood of identifying anomalies in products even in conditions that are difficult or expensive to replicate in the real world.This reduces time in designing and set-up as well as costs of an inspection apparatus. Furthermore it enables to reconfigure the apparatus to products and / or anomalies other than those for which it was initially designed.