Dspace real-time simulation system
dSPACE real-time simulation system is a software and hardware working platform developed by German dSPACE company based on MATLAB/Simulink control system development and semi-physical simulation, which realizes complete seamless connection with MATLAB/Simulink/RTW. dSPACE real-time system has the advantages of strong real-time performance, high reliability and good expandability. The processors in the dSPACE hardware system have high-speed computing capabilities and are equipped with rich I/O support, which can be combined as needed. The software environment is powerful and easy to use, including automatic code generation/downloading and testing/debugging. The whole set of tools. dSPACE software and hardware has become the preferred real-time platform for rapid control prototyping and hardware-in-the-loop simulation.
Implement fast control prototype and hardware-in-the-loop simulation
RCP (Rapid Control Prototyping) - rapid control prototype
To achieve rapid control prototyping, there must be integrated, easy-to-use modeling, design, off-line simulation, real-time development, and testing tools. The dSPACE real-time system allows for repeated modification of the model design for offline and real-time simulation. In this way, errors and inadequacies can be eliminated at the beginning of the design, minimizing design modification costs.
With RCP technology, trade-offs between cost and performance can be made; before the final product hardware is put into production, issues such as the effects of discretization and sampling frequency, and the performance of the algorithm can be carefully studied. By connecting the rapid prototyping hardware system to the actual equipment to be controlled, the performance characteristics of the system using different sensors and drive mechanisms can be studied repeatedly. Moreover, the bypass control (BYPASS) technology can be used to integrate the prototype electronic control unit (ECU) or controller into the development process, thereby gradually completing the smooth transition from the prototype controller to the product controller. The key to RCP is the automatic generation and download of code, which can be modified with a single click of the mouse.
HILS (Hardware-in-the-Loop SimulaTIon) - semi-physical simulation (ie hardware-in-the-loop simulation)
When the design of the new control system is over and a product controller has been built, it needs to be tested in detail in a closed loop. However, for various reasons such as: limit test, failure test, or expensive test in real environment, it is difficult to test, for example, small car anti-lock device (ABS) controller on snow-covered road. The friction test can only be carried out in snowy weather in winter; sometimes in order to shorten the development cycle, it is even desirable to test the controller in the absence of the operating environment (eg, the control object is developed in parallel with the controller). The HIL simulation of the dSPACE real-time simulation system will help you solve this problem.
dSPACE development process
When developers are developing control systems, they often need to face many difficult problems at the same time, and the development time is getting more and more urgent. Therefore, only highly integrated systems can meet all of these requirements. dSPACE system design is not only for the design and off-line simulation of control solutions, but also for real-time rapid control prototypes, conversion of proven designs to product controllers, and hardware-in-the-loop test. dSPACE provides a set of computer-aided control system design tools, the CDP (Control Development Package), for RCP and HILS.
CDP is based primarily on the following tools:
MathWorks Simulink: for block diagram-based offline simulation
MathWorks Real-TIme-Workshop: used to generate C code from block diagrams
dSPACE Real-TIme Interface (RTI): used to generate hardware system-related code that allows code to run on a single-processor/multiprocessor target system
dSPACE series software tools: for interoperating closed-loop tests (automatic/manual)
With CDP, you can complete the whole process from system modeling, analysis, offline simulation to real-time simulation, allowing developers to concentrate on the concept of control scheme without having to spend a considerable amount of time on trivial chores, which can greatly shorten development. cycle.
dSPACE system featuresThe dSPACE system is highly integrated and modular, allowing users to build user systems on demand, whether in software or hardware, dSPACE offers a number of options. dSPACE has single-board systems and component systems as well as numerous I/O interface templates for most engineering applications. The dSPACE system is based on a graphical development interface, eliminating the tedious and error-prone work of manual programming by developers. dSPACE products include software and hardware. The main software includes RTI, ControlDesk, TargetLink and so on.
The superiority of the dSPACE system
(1) The dSPACE system software and hardware adopt modular design method and high reliability. With the integrated development and debugging platform provided by dSPACE, it is convenient and quick to build a rapid control prototype and complete the design and debugging of the control system. Engineers can use a short time to complete a task that requires a lot of code to complete, and the modification of model parameters, code generation and download is very convenient, completely avoiding the kind of past. Because local changes take weeks or even months to modify and re-test the code, which saves time and improves efficiency.
(2) dSPACE system and MATLAB realize seamless connection, so that MATLAB users can easily grasp the use of dSPACE, which is convenient for transition from non-real-time analysis and design to real-time analysis and design.
(3) dSPACE rapid control prototype is simple in structure and convenient to adjust.
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