IGCSE Cambridge Engineering: International Competition Preparation Guide | IGCSE 剑桥工程：国际竞赛备战攻略

📚 IGCSE Cambridge Engineering: International Competition Preparation Guide | IGCSE 剑桥工程：国际竞赛备战攻略

Competitions such as VEX Robotics, F1 in Schools and the World Robot Olympiad reward the same practical problem-solving, mechanical reasoning and documentation skills that Cambridge IGCSE Engineering develops. This guide explains how to bridge syllabus knowledge into competition performance.

VEX 机器人、F1 in Schools 和世界机器人奥赛等竞赛，看重 IGCSE 剑桥工程课程所培养的实践问题解决、机械推理和文档记录能力。本文介绍如何将大纲知识转化为竞赛表现。

1. Syllabus to Competition Mapping | 大纲与竞赛能力映射

Cambridge IGCSE Engineering combines mechanical principles, materials, electronics, manufacturing and design processes. Competition judges assess exactly these areas in an applied engineering context, so every syllabus topic can become a scoring opportunity.

剑桥 IGCSE 工程融合了机械原理、材料、电子、制造和设计流程。竞赛评委正是在应用性工程情境中考查这些领域，因此每个大纲主题都可以成为得分机会。

• Mechanics: force, moment, energy, power and simple machines link directly to robot drive systems and aerodynamic car structures. 力学：力、力矩、能量、功率和简单机械直接对应机器人驱动系统和空气动力学车架。
• Electronics: sensing, control and motor drive circuits support autonomous navigation and tele-operated systems. 电子学：传感、控制和电机驱动电路支持自主导航和遥控系统。
• Materials and manufacturing: selecting the right alloy, polymer or composite and producing accurate parts decides mass, stiffness and reliability. 材料与制造：选择适当的合金、聚合物或复合材料并生产精确零件决定质量、刚度和可靠性。

2. Competition Formats and Judging Criteria | 竞赛形式与评审标准

Before choosing a competition, study its rubric. Engineering contests usually award points for robot or vehicle performance, design innovation, engineering notebook quality, and teamwork.

在选择竞赛前，先研究评分标准。工程类竞赛通常对机器人或车辆性能、设计创新、工程笔记质量和团队合作进行评分。

For example, VEX Robotics uses alliance matches and skills challenges; F1 in Schools focuses on speed, car design, portfolio and pit display; the World Robot Olympiad sets theme-based missions with building and programming tasks.

例如，VEX 机器人采用联盟对抗和技能挑战；F1 in Schools 侧重速度、赛车设计、作品集和维修区展示；世界机器人奥赛设置主题式任务，包含搭建和编程。

Read the rules carefully and create a scoring checklist. A design may be mechanically brilliant, but if it violates size limits or safety rules it will be disqualified.

仔细阅读规则并制作评分清单。一个设计可能在机械上很出色，但如果违反尺寸限制或安全规则，就会被取消资格。

3. Design Process: From Brief to Prototype | 设计流程：从任务书到原型

Use a structured design cycle: define the problem, research, write a specification, generate concepts, select the best idea, model in CAD, prototype, test, evaluate and iterate.

采用结构化设计循环：定义问题、调研、撰写规格、生成概念、选择最佳方案、CAD 建模、制作原型、测试、评估和迭代。

A strong engineering specification includes quantitative targets such as mass below 450 g, minimum torque of 0.8 N m, or a cycle time under 30 s. This makes testing objective rather than opinion-based.

一份优秀的工程规格包括量化目标，例如质量低于 450 g、最小扭矩 0.8 N m 或循环时间少于 30 s。这使测试客观，而不是凭感觉。

Use a decision matrix to compare concepts. Score each idea against criteria such as manufacturability, cost, weight, strength and ease of control, then justify the winner in your notebook.

使用决策矩阵比较方案。按照可制造性、成本、重量、强度和控制难度等标准给每个想法打分，然后在笔记中说明获胜方案的理由。

4. Mechanical Principles for Competitive Builds | 竞赛搭建中的机械原理

Engineering competitions demand correct use of forces, moments and energy. A robot arm lifting a load must satisfy equilibrium and torque requirements; a dragster must minimise drag while keeping enough downforce or stability.

工程竞赛要求正确运用力、力矩和能量。机器人手臂举升载荷必须满足平衡和扭矩要求；直线加速赛车必须在保持足够下压力或稳定性的同时减小阻力。

Apply torque, mechanical advantage and power equations consistently in SI units:

在 SI 单位下一致地应用扭矩、机械效益和功率方程：

τ = F × d    MA = F_out ÷ F_in    P = W ÷ t

Gear ratios change speed and torque. A gear ratio of 3:1 reduces output speed to one third but triples torque, allowing a high-speed motor to drive a heavier mechanism.

齿轮比改变速度和扭矩。3:1 的齿轮比将输出速度降为三分之一，但将扭矩提高三倍，使高速电机能够驱动更重的机构。

5. Materials and Manufacturing Methods | 材料与制造方法

Select materials using a property-led approach. Aluminium alloys give high strength-to-weight ratio, ABS is easy to 3D print,

Published by TutorHao | IGCSE 工程 Revision Series | aleveler.com

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