(09-08-2012, 06:35 AM)NaN Wrote: A small update.

Current ABS, TCS are adjusting per wheel brake value to match tire ideal slip(maximum grip). They don't deal with car stability though. Thus I've been trying to figure out a simple stability control(using brakes too). Unfortunately it is a bit more involved to infer current car state, identify over steer and adjust the brakes correctly to reduce it. A few naive attempts didn't work as expected.

I really would like this to be working before making a release as it would help the AI and keyboard drivers controlling the car. This means delays though.

Quote:Yaw rate sensor: The sensor is installed parallel to the vertical axis of the vehicle. It detects only the rotational angular velocity (yaw rate) around the axis.

G sensor: This sensor is set in a horizontal position near the center of gravity of the vehicle. It detects acceleration in the longitudinal and lateral directions.

Steering angle sensor: This sensor is installed on the back of the steering wheel, and directly detects the driver's steering operation.

Brake pressure sensor: This sensor is installed on the VSC hydraulic control unit to detect changes in brake pressure.

Wheel speed sensor: This sensor is set at each wheel to detect each wheel's rotational angular velocity.

Throttle angle sensor: This sensor detects the driver's acceleration pedal operation and the throttle angle when engine output is controlled by VSC.
VSC hydraulic control unit: The TRC and ABS functions work when wheels slip on acceleration and deceleration. The VSC function works when the vehicle skids. The unit supplies hydraulic pressure to control each wheel.

Throttle actuator: It opens and closes the throttle valve when the VSC controls engine output.

(09-15-2012, 09:17 AM)MiguelM Wrote: In regards to TCS, the description I posted above is Toyota's own description of their system. The more advanced system has Toyota's TCS integrated, probably a different, more sophisticated version of it.

A question someone posed to me recently is this: regardless of sporting/technical regulations by FIA, pilots seemingly prefer no driver aids, they find TCS systems too intrusive. So, racing sims also have to take this into account, allowing the simracer to turn driver aids off.

Drifting wise, aren't these systems too intrusive also? How much intervention is acceptable?

(09-15-2012, 11:10 AM)NaN Wrote: The issue with driver aids in racing sims/games has an additional function compared to real life, compensating for the input and feedback. As an exaggerated example, I don't think one could control a real world racing car with a gamepad.

(09-15-2012, 09:17 AM)MiguelM Wrote: joevenzon,

is the Pacejka Editor still available for download (the win32 dlls and exe)?

(09-18-2012, 11:20 AM)joevenzon Wrote:

(09-15-2012, 09:17 AM)MiguelM Wrote: joevenzon,

is the Pacejka Editor still available for download (the win32 dlls and exe)?

There should be an old copy on svn.vdrift.net under /trunk/win32/bin

(09-16-2012, 12:29 PM)NaN Wrote: Weird. I've tried something very primitive today. I used car body slip angle to trigger brake release/lock (depending on wheel roll direction, relative position) and it seems to be very effective (tested with F1-02, Z06). I had a really hard time to force oversteer beyond the trigger angle limit. It is somewhat clunky/aggressive, needs an angular velocity factor I think, but it works.

(09-23-2012, 03:02 PM)MiguelM Wrote: Problem is, the only thing is access to the repository for full retrieval is possible only through ViewVC. ViewVC is only available through building its source code, which I cannot atm build.

Quote:"Can't connect to host 'svn.vdrift.net': No connection could be made because the target machine actively refused it."