Vincent Chung Portfolio
Design of an Autonomous Grocery Delivery Vehicle
The goal of this project was to design a delivery vehicle capable of transporting 300kg of groceries within a maximum area of 50 square kilometers. The maximum weight capacity is equivalent to 66 - 85 grocery bags; necessitating a vehicle the size of a small SUV.
To reduce the cost of the vehicle and ensure the frame was sturdy; square steel tube was used.
Every panel was rectangular to streamline production and reduce costs. The stainless steel sheets were durable and easy to repair.
The drive system consisted of four wheel modules. Each module featured a motor to control the orientation and a hub motor to drive the wheels. Individual modules were chosen to eliminate the need for any mechanical connections between the wheels. All of the modules are identical and in case one is damaged, the entire component can be quickly swapped out.
The motor in each wheel module can spin 360 degrees independently of the other wheels. This allows the vehicle to precisely control itself.
The wheel is attached to the module via a double wishbone design. A simple spring suspension was chosen to reduce the cost and complexity.