基于Ngspice的数模混合电路仿真交互系统  

Ngspice Based Analog-Digital Hybrid Circuit Simulation Interactive System

作　　者：齐非凡 王月海[1] 王连浩 QIFeifan;WANG Yuehai;WANG Lianhao(College of Information,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学信息学院,北京100144

出　　处：《工业技术创新》2022年第4期22-29,共8页Industrial Technology Innovation

摘　　要：针对现有数模混合电路仿真软件存在的元件模型种类有限、可扩展性差等问题,提出一种以Ngspice仿真引擎作为内核的数模混合电路仿真交互系统。以接口函数和封装操作实现数据处理和调用功能,以电路原理图编辑和参数配置界面作为用户与仿真器的交互,用户可从模型元件库中选取各种元件,实现仿真电路图的绘制。系统通过电路转换,生成电路所对应的网表文件。Ngspice根据用户的配置完成电路仿真,并对仿真结果进行图形化显示。利用同步算法实现了数模混合信号同步,成功解决了数模混合电路仿真技术的融合设计。测试结果表明,系统具有良好的性能及适用性,仿真结果总体相对误差仅为1.3%。Aiming at the problems of limited component models and poor scalability existed in the existing analog-digital hybrid circuit simulation software,an analog-digital hybrid circuit simulation interactive system with Ngspice simulation engine as its core was proposed.The interface function and encapsulation operation were used to realize data processing and calling functions,and the interface of circuit schematic diagram editing and parameter configuration was used as the interaction between users and the simulator.Users can select various components from the model component library to draw the simulation circuit diagram.The system can generate the netlist file corresponding to the circuit through circuit conversion.Ngspice completes the circuit simulation according to the user’s configurations,and graphically displays the simulation results.The synchronization algorithm was used to realize the synchronization of analog-digital mixed signals,and the integration design of analog-digital mixed circuit simulation technology was successfully solved.The test results show that the system has good performance and applicability,and the overall relative error of simulation results is only 1.3%.

关 键 词：数模混合电路 Ngspice 网表文件 仿真交互 融合设计 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]