Mechanical Engineering

Zhengliang (Cho) Liu

**** ***** *** **, *******, WA 98052 443-***-**** *********@*****.***

EDUCATION

University of Maryland, College Park: A. James Clark School of Engineering

M. ENG Robotics --- Cumulative GPA 3.67 Dec 2019

B.S. Mechanical Engineering May 2018

SKILLS

Programming Language: C++, Python, MATLAB, Simulink.

Technical Skills: ANSYS, AutoCAD, Autodesk Inventor, SolidWorks, PTC Creo, Mechanical design, Structural and Thermal Analysis, Machining, Lathe, Mill, Laser cutter, 3D printer, V-rep, ROS, Gazebo, Blender, Microsoft Office, Lightroom, Photoshop CC, Premiere Pro.

MECHANICAL ENGINEERING EXPERIENCE

Advanced Manufacturing Lab, University of Maryland College Park, MD

Undergraduate Researcher June. 2018 – Sept.2018

Collaborated with the advanced manufacturing lab to redesign the Robo-Terp III to achieve a stable and faster locomotor motion in different terrains with a 23% increase in speed.

Redesigned the structural frame using SolidWorks, resulting in increased stability and reduced mass by 18%.

Fabricated new frame and motor housing using 3D printing and laser cutting.

Added remote control function using Spektrum DX5e transmitter with AR600 Receiver.

Programmed the walking, swimming, and remote-control using Arduino Mega with Arduino.

Mechanical Engineering Dept, University of Maryland College Park, MD

Electronics and Instrumentation II Teaching Fellow Jan. 2018 – May 2018

Mentored students with Arduino/Processing programming, and circuit design during lab sections.

Held weekly office hours and review sessions to tutor over 50 students with lecture materials, lab assignments and final project.

Assisted course instructor with weekly teaching fellow team meetings to evaluate feedback from students.

Terps Racing (Formula SAE) College Park, MD

Mechanical Design and Testing Engineer Jan. 2017 – May. 2018

Validated the design of the rear upright brackets by using FEA structural analysis to ensure enough clamping force was provided to keep the desired camber angle.

Made front upright brackets drawing in SolidWorks with Geometric Dimensioning and Tolerancing (GD&T) principles for CNC machining.

Designed and machined jig fixtures to assemble various suspension components to the frame of vehicle. Implemented damper potentiometers onto TR17’s car by designing, manufacturing, and assembling a sensor housing to collect damper position and velocity data for the vehicle dynamics team.

Developed a test preparation manual to include the vehicle’s static orientation (camber, toe, corner weights) and test procedures (sensor calibration methods, test data recording processes) for more efficient test days.

SOFTWARE PROJECT EXPERIENCE

Software Development Aug. 2018- Present

Path Planning: Implemented A* path finding algorithm for a differential drive (non-holonomic) robot in Python and created a simulation in V-rep with remote API function.

Traffic sign detection and recognition: Utilized Python and OpenCV platforms to perform traffic sign detection and recognition from given video source. Key concepts included HSV color space thresholding, edge detection, and SVM model training.

Visual Odometry: Created a Python program to provide the camera’s moving trajectory given frames of a driving sequence taken by a camera in a car. Key concepts included feature matching, the fundamental matrix, the essential matrix, and the RANSAC method.

Baxter Simulation: Used a Baxter robot for transporting cubes in Gazebo using ROS Kinetic.

Movie Web Application: Developed frontend and backend modules using Python on Django Web Framework. Used SQLite to migrate movie stock data.

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