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Resume

Resume_Chang Hee Han.pdf
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THESIS

Mar. 2024 – Jun. 2024
Estimating Rear Toe Angle Disturbance Due to Kinematic and Compliance Steer - SNU
Developed an estimation model to predict rear-toe angle disturbances caused by kinematic and compliance steer effects in rear-wheel steering
Designed a regression-based model to estimate kinematic steer using suspension test data and linear regression for toe angle changes due to wheel vertical force inputs
Implemented a physics-informed neural network to estimate compliance steer by considering various forces acting on suspension components, such as longitudinal force, lateral force, and aligning moment
Validated the accuracy of the models using ADAMS/Car simulations, demonstrating the potential to effectively reduce toe angle disturbances and enhance vehicle handling and stability
Mar. 2021 – Jun. 2021
Design of Deep Learning-based Vehicle Modelling - HYU
Designed LSTM model for estimating vehicle yaw rate and side slip angle using actual vehicle data
Determined limitation of linear vehicle dynamic model through 2 DOF state-space bicycle model
Verified that the LSTM model with the appropriate algorithm estimated the yaw rate and side slip angle of the vehicle accurately in both low-speed and high-speed sections using Matlab/Simulink and Carsim
Utilized LSTM to handle time series data

RESEARCH EXPERIENCE

Mar. 2022 – Aug. 2024
Hyundai Moter Co-operation Project  - SNU
Development of High-Performance Specialized Control Logic for Rear Wheel Independent Steering System (July. 2023 to Aug. 2024)
Conducting an in-depth study on the dynamics of rear-wheel steering, focusing on kinematic and compliance steer that led to toe angle variations and their direct impact on vehicle movement
Analyzing the significance of toe angle adjustments and how they influence vehicle behavior, particularly during high-speed driving conditions
Applying advanced simulation tools such as ADAMS/Car and Carsim, and kinematic models to understand and enhance vehicle track performance through rear wheel steering control
Development of Target Characteristic Tracking Controller for Enhanced Limit Handling Performance of Rear Wheel Variable Geometry System (Mar. 2022 to Dec. 2022)
Enhanced high-speed cornering stability by controlling rear-wheel in-phase for maximum tire grip. Increased maximum lateral force by 172.1N (1.698%)
Conducted research specifically on controlling camber angles in the rear wheel variable geometry system
Mar. 2021 – Jun. 2021
E-powertrain Team Project - HYU
Improving the efficiency of EV
Designed various types of IPMSM motors using AutoCAD and JMAG to obtain the voltage and torque under given conditions; found motor with optimal efficiency and low magnet usage by analyzing LdLq torque and losses
Investigated and proposed six methods to improve EV efficiency, including AWD Disconnector to reduce no-load iron loss and utilizing COMSOL software for motor deformation analysis
Sep. 2020 – Dec. 2020
Arduino Team Project - HYU
Smart Parcel System
Designed an unmanned delivery system as an Arduino project using Car and Elevator
Wrote code to control three sensors and motors, such as ultrasonic, infrared, and weight-sensing sensors
Experienced optimizing and reassembling code several times while searching for data to minimize operational errors with limited performance and uploading the code directly to Github
Managed system operations through coding gaining valuable insights into both hardware and software components
Sep. 2020 – Dec. 2020
CAE Team Project - HYU
Simulation of Parcel System
Conducted a project using Simulink and COMSOL to compare actual measurements and simulation values by simulating changes in air resistance, motor push force, and battery SOC
Worked off of the Smart Parcel System of Arduino project
Mar. 2017 – Jun. 2017
CATIA Team Project - HYU
Robot Simulation Project
Designed a planet-exploration robot using CATIA
Modelled eight types of gear and considered kinematics; produced results by assigning constraints after 3D modelling

ADDITIONAL INFORMATION

Certificates: Craftsman Motor Vehicle Maintenance, Computer Specialist in Spreadsheet and Database
Languages: Korean and English (TOEFL 107, TOEIC 980)

WORK EXPERIENCE

Sep. 2022 – Dec. 2022     
Collaboration with FMTC (SNU Self-driving Smart Mobility Center)   - SNU
Teacher at Autonomous Driving Mobility Classroom
Led workshops in high schools teaching 30 students about self-driving cars using AWS Deepracer, covering basic controls and image recognition
Organized model car races for students, fostering practical application of learned topics through friendly competition
Aimed to get more students interested in the future of cars and technology
Jan. 2017 – Feb. 2017
ACE Lab - HYU
Lab Assistant
Compiled and drafted minutes and managed the inventory of all materials to support lab operations and research projects
Assisted in preparing materials for part dimensions

MILITARY SERVICE

Jun. 2018 – Feb.2020   
MILITARY POLICE
Squad commander of Riot Police (Jan. 2020 to Feb.2020)
Responsible for the safety and security of tens to hundreds of personnel during public demonstrations and events in Seoul.
Developed strategic operational plans to mitigate risks of the squad during protests
Coordinated closely with other police units to maintain order and public safety, enabling rapid and accurate information exchange between headquarters and field units.

EXTRACURRICULAR ACTIVITIES

Sep. 2023 – Dec. 2023   
Club Activity ‘Caffe人 (Central Coffee Club)’   - SNU
Organized coffee meetups with club members to plan and host coffee tasting seminars and events, exploring diverse flavors and brewing techniques while engaging with students from various majors.
Mar. 2017 – Aug. 2017
Club Activity ‘Race’   - HYU
Designing and Building Electric vehicle
Actively participated in organizing executive meetings and events
Participated in the KSAE Automotive competition
Contributed to vehicle design and construction through teamwork, fostering a strong professional network

VOLUNTEER

Dec. 2016 – Dec. 2019  
Han-Kuk Yukyoung School (Dec. 2019)
Assisted the outdoor-based activities and programs with 20 children possessing emotional disorders, helping them in their educational and recreational activities for the enhancement of growth of their emotional and social realm.
Assistant Activity during Military service
Seoul Rehabilitation Center for the Cerebral Palsied (Dec. 2016 to Feb. 2017)
Engaged in various voluntary roles, including tutoring math, serving meals, and assisting in event planning, all aimed at enhancing the quality of life for individuals with cerebral palsy.