仪表宝典 vs Control System Calc

仪表宝典是专为工业自动化、仪表工程师、技术学生打造的一站式仪表服务平台，集专业资料、在线工具、知识社区于一体，专注解决仪表选型、调试、故障处理、学习提升等实际工作需求。无论你是现场仪表工程师、DCS/SIS 系统运维人员，还是工控领域学习者，都能在这里找到精准技术资料、实用计算工具与专业行业支持，大幅提升工作与学习效率。 【海量专业资料库】 覆盖 DCS/PLC/SIS/MES 等控制系统，以及常规仪表、分析仪表等全品类资料；提供横河、中控、和利时、霍尼韦尔等主流厂商组态手册、操作指南、功能块说明；包含故障处理方案、培训课件、标准规范、计算表格等多类型文档，支持快速检索与查阅。 【高效在线工具集】 集成全能调试助手，一站式解决日常高频工作需求；提供逻辑门、热电偶、PID 仿真与整定等仿真模拟工具，辅助电路与控制算法学习；支持温压补偿、标况换算、Cv/Kv 计算、蒸汽参数等常用工程计算，数据精准可靠；涵盖气体物性、热量计算、换热器、泵性能等专业计算，满足复杂工程场景使用。 【知识共享与行业交流】 支持用户上传分享仪表资料，共建行业知识库；开设故障处理、考试题库、技术论文等板块，构建完整工控知识体系；更有社群交流、技术互助功能，连接行业同仁，共同解决技术难题，助力持续成长。 【应用亮点】 专业聚焦：深耕工业仪表领域，内容精准匹配工程师与学习者实际需求； 工具赋能：复杂工程计算与仿真场景轻量化，手机端即可高效完成工作； 生态完善：从资料查询、工具计算到社区交流，形成完整仪表工作闭环； 界面友好：简洁直观分类导航，新手快速上手，降低学习与使用成本。 【适用场景】 现场调试：快速查阅仪表手册、调用温压补偿等工具，高效完成设备调试； 系统运维：获取 DCS/SIS 系统组态与故障处理方案，保障生产稳定运行； 学习备考：通过培训课件、考试题库系统学习，快速掌握工控知识与技能。

Control System Calc (ControlCalc) is an engineering tool for control engineers, R&D staff and students. Enter a transfer function to perform PID tuning, frequency-domain analysis and time-domain simulation — turning textbook control theory into a pocket tool you can use anywhere. Core calculations run locally on your device; ads, purchases and purchase restoration require a network connection. KEY FEATURES ■ PID Tuning Five classic tuning methods built in: Ziegler-Nichols open-loop step, Cohen-Coon, Ziegler-Nichols closed-loop ultimate, plus IMC-Lambda and AMIGO. Each method includes guidance on when to use it. ■ Closed-Loop Step Simulation Simulate the closed-loop step response with an FOPDT model and a PID controller with derivative filtering. View the control effort u(t) to spot actuator saturation, and fine-tune parameters by hand. ■ Bode Plot & Stability Margins Draw magnitude and phase curves on a log scale, with automatic 0 dB / −180° reference lines, gain margin, phase margin and crossover frequencies — stability at a glance. ■ Step Response & Performance Metrics RK4 time-domain simulation that automatically computes overshoot, rise time and settling time. ■ Second-Order Designer Back-solve system parameters from overshoot Mp / settling time ts, or from damping ratio ζ / natural frequency ωn, then push them to the step-response page in one tap. ■ Root Locus & Nyquist (Pro) Root-locus branch tracing with the imaginary-axis stability boundary, an equal-aspect Nyquist plot with unit circle, plus pole/stability analysis for deeper insight. ■ Complete Analysis Example Follow one fixed model from step response and frequency response through Nyquist and root locus to understand what each analysis reveals. The example never reads or changes your model. ■ CSV File Export (Pro) Export the full Bode or step-response samples as an actual .csv file. Save it to Files or share it to an Excel, MATLAB or Python workflow. THOUGHTFUL DETAILS • Built-in library of classic example models — tap to load and go • Draggable readouts on time-domain curves (live t / y display) • Numeric keyboard with a Done button; input parameters persist automatically • Simplified Chinese / English / German / Japanese, switchable in-app instantly PRO UPGRADE (one-time purchase) • Removes all ads • Unlocks IMC-Lambda / AMIGO tuning methods • Unlocks Nyquist plot, root locus and pole/stability analysis • Unlocks Bode and step-response CSV file export Buy once, keep forever. No subscription. WHO IS IT FOR Control, electrical, mechatronics and process engineers, R&D and commissioning staff, students taking control-theory courses, and anyone who needs to quickly validate a control-system design. DISCLAIMER All results are provided for engineering reference only. Real-world system design and commissioning should combine field conditions with professional judgment. Have feedback or questions? Contact us from the Settings page.