Steer by wire confirmed?

[Gurule92]

This might be old, if it is disregard. (I haven't been on as much lately lol)

But could be how CT is changing steer by wire to correct some of those issues mentioned before.

https://electrek.co/2023/06/16/tesla-patents-new-steer-by-wire-system/

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[Crissa]

Unfortunately, it's only been confirmed for the rear wheel turning.

-Crissa

 

[Jhodgesatmb]

Unfortunately, it's only been confirmed for the rear wheel turning.

-Crissa

Has it even been confirmed for the rear wheel steering? I haven't seen a verified source. It makes 'sense' for the CT to have 4WS with progressive steer-by-wire (and I have been hoping for it) but if wishes were fishes ...

 

[Gurule92]

Has it even been confirmed for the rear wheel steering? I haven't seen a verified source. It makes 'sense' for the CT to have 4WS with progressive steer-by-wire (and I have been hoping for it) but if wishes were fishes ...

I have never heard that saying and I want to know the rest

 

[Deleted member 17810]

Has it even been confirmed for the rear wheel steering? I haven't seen a verified source. It makes 'sense' for the CT to have 4WS with progressive steer-by-wire (and I have been hoping for it) but if wishes were fishes ...

If the rear was not steer by wire it would need a drivetrain spanning the whole truck.

That's....not likely.

 

[Crissa]

Has it even been confirmed for the rear wheel steering? I haven't seen a verified source. It makes 'sense' for the CT to have 4WS with progressive steer-by-wire (and I have been hoping for it) but if wishes were fishes ...

Makes sense, but the rear is what we're sure will have steer-by-wire just because that's how it's been done successfully, and why would Tesla choose a less good system?

You don't measure mechanical systems in time delay.

-Crissa

 

[Jhodgesatmb]

Makes sense, but the rear is what we're sure will have steer-by-wire just because that's how it's been done successfully, and why would Tesla choose a less good system?

You don't measure mechanical systems in time delay.

-Crissa

I am not disagreeing with [either] of you, and it only makes sense; I just haven't seen it confirmed. Also, using your same logic/reasoning, why would Tesla use SBW in the rear and not in the front. Perhaps this new patent allows them to do just that. I dunno.

 

[Jhodgesatmb]

I do not think that anyone would disagree with you that a sucky solution would suck. What makes you think that Tesla would mess it up just because Stellantis did? One company 'can' learn from the mistakes of others. Also, didn't Lexus recently implement a SBW solution? Was it an improvement over the Jeep version? And there are several other companies working on this, right?

 

[firsttruck]

....
why would Tesla use SBW in the rear and not in the front. Perhaps this new patent allows them to do just that. I dunno.

U.S. NASA invented digital fly-by-wire for some of its aircraft in 1972.

The Tesla patent is important but in the U.S. the patent probably does not change the main roadblock, archaic auto regulation.

In U.S. regulation, a human driveable car can have steering wheel connected to steer-by-wire (SbW) system but it must still have a backup mechanical linkage from steering wheel to front wheels.

If the car maker still needs to put in a backup mechanical linkage, the extra cost of the backup mechanical linkage cancels a significant part of cost reduction possible using SwB, cancels some of front crash safety advantages of SwB, and prevents easy right-hand/left-hand drive models manufacturing cost/complexity reduction of SwB.
Example: Being allowed to do SbW without backup mechanical linkage will probably be critical to whether Cybertruck is ever officially delivered to Australia and other right-hand drive countries.

New U.S. regulation for 100% fully autonomous (no steering wheel & other controls for a driver) vehicles (shuttles and robotaxis ) say these vehicles can use SbW and do NOT need to have a backup mechanical linkage.

If SbW without backup mechanical linkage is safe enough for 100% fully autonomous vehicles then it should be safe enough for drivers too.

This U.S. issue is similar to situation where Cybertruck still has to ship with exterior mirrors even though Tesla camera system is better.

All modern airliners that have several hundreds of passengers at a time and even when landing can still be traveling at speeds in excess of 100mph, have SwB system with NO backup mechanical linkage.

Some classes (F1) of race cars that regularly travel 150-200mph for 24/48 hour races use steer-by-wire (SbW) and brake-by wire (BbW) systems.

Formula One and some sports cars such as the Audi R8 LMS GT3, BMW M6 GT3, and Mercedes-AMG GT3, Infiniti Q60, Lexus RZ450e, Toyota BZ4X EV, and soon might be a model from Nio (Chinese EV).

Vehicles driven by some extra challenged drivers use SbW since the driver is NOT physically able to use standard steering wheel and maybe other standard controls. Some use joystick for steering.

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Steer By Wire At the N24, The First 24 Hour Race In A Mercedes GT3
Schaeffler Paravan brings steer-by-wire system to GT3 with Mercedes-AMG entry in Nürburgring 24 Hours
Posted by Miguel Bosch
6 May 2021

.....
The German Motor Sports Federation (DMSB) has approved steer-by-wire technology since 2019 and it is part of the GTC Race regulations and being introduced in the DTM as well this year with Rowe Racing having already committed to running the Schaeffler Paravan steer-by-wire Space Drive system for the #16 BMW M6 GT3 of Timo Glock and Mücke Motorsport for the #15 Mercedes-AMG GT3 Evo for Gary Paffett.

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With steer-by-wire through the green hell
For the first time in the history of the ADAC Total 24 Hours Nürburgring, a Mercedes-AMG GT3 completes the toughest race in the world without a mechanical connection between the steering unit and steering gear.
2021May07
https://www.automobilsport.com/race...steer-by-wire-through-the-green-hell,news.htm

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Schaeffler establishes steer-by-wire in DTM racing series
June 22, 2021
By Christoph Hammerschmidt
Technology News
https://www.eenewseurope.com/en/schaeffler-establishes-steer-by-wire-in-dtm-racing-series/

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Bosch brings steer-by-wire to series production
June 12, 2023
By Christoph Hammerschmidt
https://www.eenewseurope.com/en/bosch-brings-steer-by-wire-to-series-production/

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ZF Says Has Volume Contracts for Steer by Wire The deals will put it firmly among the leaders in the technology, the supplier says, adding it “expects a significant share of the steer-by-wire market by 2030.”
By David Zoia
Jul 19, 2022
https://www.wardsauto.com/vehicles/zf-says-has-volume-contracts-steer-wire

steer-by-wire is ready to be unleashed in the market, with German Tier 1 ZF moving to a front-of-the-grid position among key suppliers.

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ZF to supply steer-by-wire system to Nio
ZF Friedrichshafen signed a deal this week to supply Nio with steer-by-wire technology, making the major Chinese electric-vehicle maker the ....
20 oct 2022
https://europe.autonews.com › zf-...

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[PilotPete]

All modern airliners that have several hundreds of passengers at a time and even when landing can still be traveling at speeds in excess of 100mph, have SwB system with NO backup mechanical linkage.

Some classes (F1) of race cars that regularly travel 150-200mph for 24/48 hour races use steer-by-wire (SbW) and brake-by wire (BbW) systems.

Formula One and some sports cars such as the Audi R8 LMS GT3, BMW M6 GT3, and Mercedes-AMG GT3, Infiniti Q60, Lexus RZ450e, Toyota BZ4X EV, and soon might be a model from Nio (Chinese EV).

I believe that F1 still uses hydraulic assisted steering and not SBW. That being said, there are tons of ”XXX by Wire” systems on cars. Porsche (for quite some time) along with others, use ”throttle by wire” in their ICE cars. F1 cars DO use BBW (no, not THAT BBW) “Brake by Wire” with their hybrid systems. A number of modern aircraft manufacturers use BBW on their aircraft (some with a question of the success by the crews that fly them.) Airbus has had a full FBW aircraft (A320 series) for decades.

The USDOT is, ummmm, ahhhhh, a “little” behind the times when it comes to replacing a system from the model T (or around that time) with ANY technology. Whether it is screens for mirrors, or wires for tubes, or whatever. One of the most backwards and behind government bureaucracies out there.

 

[cvalue13]

steer-by-wire underperforming was among the leaked engineering report items out of Germany - from over a year ago

 

[Gurule92]

steer-by-wire underperforming was among the leaked engineering report items out of Germany - from over a year ago

Right. That's why I suggested that maybe they fixed something with these patents

 

[Mini2nut]

And a inspiration for the Cybertruck design team.

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