Electronic circuit simulation technology is one of the technologies that must be mastered by relevant professional learners and workers. It has many advantages:
First, electronic circuit simulation software generally has a large and complete library of electronic components and advanced virtual instruments and meters, which are very convenient for simulation and testing;
Second, the connection of the simulation circuit is simple, quick and intelligent, without welding, and there is no need to worry about damage when using the instrument to debug; greatly reducing the cost of design time and money;
Third, electronic circuit simulation software can perform a variety of accurate and complex circuit analysis.
With the continuous development of electronic circuit simulation technology, many companies have introduced various simulation software with advanced functions and strong performance. Since they can contend with a hundred schools of thought, they must have their own advantages and disadvantages in certain aspects. The following compares the advantages and disadvantages of several mainstream electronic circuit simulation software.
(1) Multisim
Multisim is a well-deserved brother in the virtual simulation of complex circuits of analog and digital circuits. It has a visualized and extremely real virtual instrument, which has reached the highest level regardless of the appearance of the interface or the internal functions. It has a professional interface and classification, powerful and complex functions, and is extremely accurate in data calculation. When we participate in electronic competitions, especially for the topic of simulation, the simulation software we use most is Multisim. At the same time, Multisim not only supports the MCU, but also supports assembly language and C language to inject programs for the microcontroller, and has the matching plate-making software NI Ultiboard10, which can provide one-stop service from circuit design to board layout.
The disadvantages of Multisim are that the software is too large, the support for MCU is insufficient, and the additional functions such as board making are not comparable to other specialized software.
(2) Tina
Tina's interface is simple and intuitive, with few components, but the classification is very good, and TI has the most complete components. TI’s components are often used in competitions. When the corresponding components are not found in Multisim, we will use Tina for simulation.
The disadvantage of Tina is that it has relatively few functions and less support for components outside of TI.
(3) Proteus
Proteus is a software that integrates circuit simulation, PCB design, and single-chip simulation. It not only contains a large number of components based on the real environment, supports many mainstream single-chip models and general peripheral models, but also provides the best real-time display effects. Its dynamic simulation is based on frames and animation, so it provides better visual effects. Proteus supports the editing/compilation/source-level simulation of the assembly language of the single-chip microcomputer. The built-in assembly compiler of 8051, AVR and PIC can also be combined with third-party integrated compilation environments (such as IAR, Keil and Hitech) to perform source-level simulation of high-level languages. Simulation and debugging.
The disadvantage of Proteus is that it is insufficient in data calculation of the circuit.
(4)Cadence
Cadence acquired and integrated the functions of Pspice, covering the entire electronic design process, including system-level design, functional verification, IC synthesis and layout, analog, mixed-signal and RF IC design, full-custom integrated circuit design, and IC physical verification. PCB design and hardware simulation modeling, etc. Cadence is the first choice for complex EDA designs.
The disadvantage of Cadence is that the operation is more complicated, which is more suitable for the development of complex boards.
(5) Matlab simulation toolkit Simulink
At present, the large-scale scientific calculation and simulation software Matlab has been equipped with a power system toolkit, which makes Matlab can be used for power electronics simulation. The simulation of PowerSystem is based on the Simuilnk graphical environment of Matlab, so it is as convenient to use as PSpiee. Simulink is one of the most important functional modules in the Matlab software package, and it is an interactive and modular dynamic analysis system for modeling and simulation. In the field of power electronics, Simulink is usually used to build simplified models of power electronic devices (such as fundamental frequency models) and connect them into a system, and then the controller can be designed and simulated directly. Simulink provides good support for C language code, and it can work in an interactive graphics environment or in batch mode of Matlab instruction language mode.
Matlab is a simulation tool based on idealized power components and functional modules. The powerful mathematical operation function of Matlab makes PowerSystem's control function very excellent, especially by using other related toolkits, the circuit can achieve extremely detailed control without spending a lot of energy. The other advantages of using Matlab are: its data processing is very effective and precise, and its running speed is very fast; its data format compatibility is very good, which is convenient for data post-processing and analysis, especially the research and analysis of control characteristics.
The disadvantage of Matlab is that the current PowerSystem is simulated based on the model of general circuit components and mathematical modules (such as transfer functions), which are different from the parameters of the actual components. The simulation results are a certain distance from the actual circuit, and the reference significance of the results Mainly reflected in the overall circuit and system. The switch and control unit use a lot of ideal components, and the switch controller only needs to be directly connected to the switch without considering the level shift. The description of the transient process of the actual switch is basically ignored. All in all, Matlab is a simulation of an ideal model and cannot consider the situation in an irrational state.
(6) Altium Designer
In addition to fully inheriting the functions and advantages of the previous series of versions including Protel 99SE and Protel DXP, Altium Designer also adds many improvements and many high-end features. The platform broadens the traditional interface of board-level design and fully integrates FPGA design functions and SOPC design implementation functions, allowing engineers to integrate FPGA in system design with PCB design and embedded design.
Altium Designer is mainly used for schematic design, circuit simulation, PCB drawing and editing, and is also a necessary software for electronic games.
The disadvantage of Altium Designer is that it is not as good as Cadence for the design of complex boards.
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