Portfolio
Portfolio
Design and fabricate a portable device that actuates user’s elbow via BLDC motor, a two stage 19:1 planetary gearbox, and cable dual pulley system for assisting stroke survivors perform activities of daily living (ADLs)
Accepted Publication in: IEEE Int. Conf. on Rehabilitation Robotics (ICORR)
Used Solidworks to design dual pulley actuator, transmission, and idler tensioner system
Used FDM & SLA 3D printers to manufacture transmission, and dual-pulley system, and tensioner idler.
Used Simulink, MATLAB, Copley Nano motor driver, and dSPACE to design for proportional, derivative (PD) control system with feedback from CUI 2048 count encoders and experiment testing
Minimum No jerk 90-degree trajectory position tracking, 6 trails, 8.28 degrees RMSE (comparable to other devices)
Frequency Response: -3 dB drop at 2 Hz (Within device bandwidth for assistive devices
Weighs less than 5 kg (0.87 kg on the arm)
Employing machine learning to predict patient movements for assistance during daily living activities in real-time for control use for elbow rehabilitation
Used 3 surface electromyography (semg) sensors, and raw inerital measurement unit (IMU) readings for 10 data acquisition logs and testing
Leveraged a convolutional neural network (CNN) machine learning model to develop a 8 layer simple CNN classification algorithm using python and pytorch
Used Arduino Mega 2560 for sensor integration and serial communication
Raspberry Pi 3B+ for algorithm deployment and real-time classification
100% confusion matrix accuracy
Able to classify 80% of total elbow movements in during water drinking activity of daily living, live.
Could be improved for a faster response
Proof of concept of classifying movements using machine learning and sensor fusion
An RC Robot Mini Car that is fully autonomous that can avoid obstacles through an obstacle course
Used Texas Instruments TM4C12 microcontroller and C code to control robot
Used ultra sonic sensor, a servo for obstacle avoidance with a 90 degree range view range of the robot
Used interrupts and timers for avoidance detection and distance measurement
Used four dc motors for torque vectoring robot during operation
Successfully able to navigate obstacle without disturbances
Design and fabricate a device that actuates user’s elbow via BLDC motor, a two stage 17.5:1 planetary gearbox (3D printed), and cable dual pulley system for rehabilitation
Published in: 2023 IEEE International Conference on Systems, Man, and Cybernetics (SMC) DOI: 10.1109/SMC53992.2023.10394153
Used Solidworks to design dual pulley actuator and reduction transmission
Used FDM & SLA 3D printers to manufacture transmission and actuator parts
Used Simulink, MATLAB, Copley motor driver, and dSPACE to design for proportional, derivative (PD) feedback control system and experiment testing
Design was able to achieve an estimated state error of 9.95° and a 1 kg object lift test resulted in a 14.74° steady state error during a step response lifting test via motor encoder readings
Sine wave trajectory tracking with RMS value at minimum of 2.716° to a maximum of 8.55°
Design and assembled a quad rotor drone for ASME IAM3D competition that is required to pick up a 1x1x1 inch payload
Used SolidWorks to reverse engineer off-the-shelf components such as the frame, brushless DC motor, and propellers using company data sheets
Designed and assembled a rack and pinion actuator to pick up payload
Designed a drone with all the necessary parts to function and pick up a payload