Delving Into the Unknown
Hi! My name is Ricardo and I’m a first year undergraduate student coursing Mechatronics and Robotic Engineering at the University of Sheffield. I’m part of the Electric Propulsion Team and in the past two months I’ve been developing a general Simulink model of the electric car that we will be building. The model includes the battery, the three-phase inverter, the dc brushless motor, the wheels and the chassis.
It has been quite a tough but rewarding journey, as I had very little experience working with Simulink and I had to learn a lot, mostly through the official Simulink documentation and the Simscape power system examples. However, my teammates have been very helpful as we have a very positive work environment.
Looking back, I’m proud of the improvements on functionality and resemblance of the actual physical car that we have achieved through several design iterations. However, there is still some work to do in what refers to the motor speed controller, as right now the rise time of the response to a step RPM demand is quite large (albeit the system is very stable and has little steady state error). Also, the measurements of the current drawn from the battery are fairly noisy, and we are working on reducing their noise through a lowpass filter.
Ricardo Olmedo - Electrical and Control Systems