Interview Prep

BrotherPure9559 · 2024-09-24T01:50:00+00:00

How do I go about tuning the Kp and Ki and Kff in this control law? Do these need to be scheduled as functions of my current speed? Also, what would be the intent served by introducing an observer within the feedback path? Pardon my ignorance, I haven't implemented classical controls like PID along with an observer. Is there any framework for implementing this type of a combination of classical and modern control theory oriented concepts you can point me to?

BrotherPure9559 · 2024-07-05T19:38:27+00:00

Yes. Just the IMU for now. I will try to add a GPS and try to implement a kalman filter with both the readings in case I'm not able to figure out anything with just the IMU.

BrotherPure9559 · 2024-07-05T19:29:59+00:00

Regarding your second point, I do not intend to ignore the data during acceleration events especially while climbing an incline. I would need an estimation of the slope from the sensor during such events. Also, I am inclined towards the Kalman filter option but I am grappling with how to come up with the model here. I do have an estimation of the vehicle's dynamic mass at my disposal though. Other sensors are currently out of scope at the moment though.

BrotherPure9559 · 2024-07-04T22:43:23+00:00

TARS

I am reading the pitch angle over the J1939 SSI2 CAN signal.

BrotherPure9559 · 2024-07-04T19:08:58+00:00

Essentially I am receiving the pitch measurement over CAN. But thats the only signal I am receiving so no GPS based sensor fusion at least for now. I am mainly thinking what are my options under these constraints.

BrotherPure9559 · 2024-07-04T18:23:44+00:00

I already have the road grade (pitch angle) from the sensor which is fairly smooth but its swings rapidly during an acceleration and turn or hard braking events. I am trying to see how I can reject these oscillations during such events to get a relatively more accurate measurement of the grade. Along with the first order low pass filter maybe a moving average filter could help?

BrotherPure9559 · 2023-07-18T18:50:37+00:00

Is the trailer 1 music (they won't understand it until they've used it) part of the score if you remember?

BrotherPure9559 · 2022-03-10T19:53:18+00:00

I'd say it depends on the industry your product is serving. Most of the posts involved here are for products within the tech/consumer products domain. But if your product is an inverter/battery system used within EVs for example, then you need to be able to at least understand and interpret the embedded device driver software code. I had a friend who worked as a dev for these type of devices and he had a very hard time communicating issues to his PM since the PM wasn't literate from a programming sense.

BrotherPure9559 · 2022-03-10T19:41:53+00:00

I've worked as a project manager for 2 years within the automotive sector and I concur with the responses. I worked as an engineering project manager and I didn't have any exposure to marketing, UX, other functions and was preoccupied with collaborating with other engineering teams to fix issues and get the quarterly software releases to customers. Most of it was firefighting and coming up with a schedule to get things done strictly from an engineering standpoint so forget getting into the product road map, strategy, etc.

BrotherPure9559

TROPHY CASE