4 ms·
No, "the problem" as described is control lag, and decoupled input simply is not the same thing. What you describe as "far from a non-issue" is a characteristi
by ajross 3y ago
No, "the problem" as described is control lag, and decoupled input simply is not the same thing. What you describe as "far from a non-issue" is a characteristic shared by literally every fly/drive-by-wire system. If you trust your Airbus to get you to your destination, you can trust a Cybertruck[1] to get you home. Or if you don't, you need to come to the debate with evidence and not misleading garbage tweets like this one.
[1] Or others. Tesla is not the first company to offer steer-by-wire, just the first to engender this kind of nonsense debate about every decision they make.
- Animats 3y agoYes, it's control lag. Our 2005 DARPA Grand Challenge vehicle, a Polaris Ranger ATV, looked like that in manual mode. The steering wheel was drive by wire, and used a simple PI controller. Stationary, with the steering system fighting static friction, the normal P value useful for driving is too low, so there's lag. The I term cranks up the force until the error goes to 0, but that takes time. Our remote dashboard had two pointers on the steering meter - commanded steering angle and actual steering angle. We could watch the lag. Half a second of lag was OK, because we didn't do any aggressive maneuvers. Manual mode was just for positioning the vehicle before going autonomous. That slowdown at the end of the Tesla video looks like normal operation of a PI controller. Does Tesla have steering force feedback? If the steering wheel is leading the wheels, the steering wheel should be pushing back on the driver if there's significant error.