Hydraulic power steering:(HPS)
Everywhere. Widely used in older vehicles.
Electric Power Steering(EPS) or Electr-Hydraulic Power Steering (EHPS)
the basic designs of Electric assisted steering. the electric motor or pump replace the hydarulic pump which reduce the engine power loss and make the steering resistance adjustable.
Mini Copper: EHPS
Honda Accord Euro/ Turneo EPS
Toyota MR2 EPS
Etc.
Active steering:
A type of power electric variable gear ratio power steering technology introduced by BMW in 2003 first appearing on the redesigned 5-series which varies the degree that the wheels turn in response to the steering wheel. At lower speeds, this technology reduces the amount that the steering wheel must be turned -- improving performance in situations such as parking and other urban area traffic maneuvers. At higher speeds, the performance is such that the normal increased responsiveness from speed is avoided and it provides improved directional stability.
Drive by wire:(DBW)
has no steering column and completely controlled by wire. It eliminate the injury by steering column when crash.
The vibration and shock will not be transfered to the drive from steering column.
This is currently used in electric forklifts and stockpickers and some tractors [1]. Its implementation in road vehicles is limited by concerns over reliability although it has been demonstrated in several concept vehicles such as ThyssenKrupp Presta Steering's Mercedes-Benz Unimog, General Motors' Hy-wire and Sequel and the Mazda Ryuga. A rear wheel SbW system by Delphi called Quadrasteer is used on some pickup trucks but has had limited commercial success.
Automatic steering:
used mostly in farming and low speed operation vehicles. they use a gps and sensors to make the vehicle go thru a programmed path. the accuracy is low as the requirement for those agriculture vehicle is at a low level.
Speed Sensitive Steering
An outgrowth of power steering is speed sensitive steering, where the steering is heavily assisted at low speed and lightly assisted at high speed. The auto makers perceive that motorists might need to make large steering inputs while manoeuvering for parking, but not while traveling at high speed. The first vehicle with this feature was the Citroën SM with its Diravi layout[citation needed], although rather than altering the amount of assistance as in modern power steering systems, it altered the pressure on a centring cam which made the steering wheel try to "spring" back to the straight-ahead position. Modern speed-sensitive power steering systems reduce the mechanical or electrical assistance as the vehicle speed increases, giving a more direct feel. This feature is gradually becoming more common.
Four-wheel steering
Four-wheel steering (or all-wheel steering) is a system employed by some vehicles to improve steering response, increase vehicle stability while maneuvering at high speed, or to decrease turning radius at low speed.
It seems all the steering technology focus on the better drivability and comfortability for normal driving. None of them has considered to have the steering automatically while the slide of a car is fore seen. I dont think no one ever thought about it. Then why is there no progress or at least an idea available out there? There could be a specific reason. Robert, can you find out or at least do some research. I hope our idea is not denied by some simple answer.
Maybe they are not thinking about the sliding of the car because, when using GPS they can completely slow the car down before the slide even starts to happen, so they probably think that it is not needed ? who knows I will check out the hyundai ix35 and get some info on it :)
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