Smart Car Design — Provincial Competition Silver Award (Team Lead)

Thu, 01 Jun 2023 00:00:00 +0000

Led a team in designing and manufacturing a cam-steered autonomous smart car for the provincial-level competition, taking the project from concept through mechanical design, simulation, and hardware implementation.

Role: Team Lead — responsible for overall mechanical architecture, steering system design, trajectory modeling, and circuit design.

Mechanical Design

Early-stage CAD concept model — initial chassis layout and wheel configuration.

Final SolidWorks detailed render — cam steering mechanism, gear transmission, drive wheels, and onboard camera mount.

The steering system uses a cam-based mechanism to convert rotational motion into precise lateral displacement, eliminating the need for servo actuators and improving mechanical reliability. The drivetrain uses a gear reduction stage paired with brushed DC motors.

Trajectory Simulation

MATLAB trajectory simulation — left: full path trace (x/y in mm); top-right: vehicle turning angle vs. displacement; bottom-right: cam curve profile.

Developed a MATLAB model to simulate the vehicle trajectory based on the cam profile. Key outputs:

Path trace — verifies the car follows the intended curved route
Turning angle curve — validates smooth, continuous steering input
Cam profile — designed for minimal acceleration jerk and stable contact force

Charging Circuit

Custom charging circuit schematic — onboard battery management for the competition vehicle.

Designed a custom charging circuit with battery management to ensure reliable power delivery during competition runs.

Award: Silver Award, Provincial Smart Car Competition | Team Lead Stack: SolidWorks · MATLAB · PCB Design · DC Motor Control

智能小车设计 — 省赛银奖（队长）

Thu, 01 Jun 2023 00:00:00 +0000

担任队长，带队设计并制造一辆凸轮转向自主智能小车，参加省级竞赛。项目覆盖机械设计、轨迹仿真到硬件实现的全流程。

职责： 队长 — 负责整体机械架构、转向系统设计、轨迹建模与电路设计。

机械设计

初版 CAD 概念模型 — 底盘布局与车轮配置初稿。

SolidWorks 最终详细渲染 — 凸轮转向机构、减速齿轮、驱动车轮与摄像头支架。

转向系统采用凸轮机构，将旋转运动转化为精确的横向位移，无需舵机，提升机械可靠性。传动部分采用减速齿轮级配合有刷直流电机。

轨迹仿真

MATLAB 轨迹仿真 — 左：完整路径轨迹（单位 mm）；右上：车辆转角随位移变化；右下：凸轮曲线轮廓。

基于凸轮轮廓建立 MATLAB 仿真模型，验证车辆行驶轨迹。核心输出：

路径轨迹 — 验证小车沿预定曲线行驶
转角曲线 — 确保转向输入平滑连续
凸轮轮廓 — 设计目标：最小加速度冲击、稳定接触力

充电电路

自制充电电路原理图 — 含电池管理，保障比赛期间稳定供电。

奖项： 省级智能小车竞赛银奖 | 队长 技术栈： SolidWorks · MATLAB · PCB 设计 · 直流电机控制

Mechanical Design | Liu Yue — Embodied AI Researcher