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An active suspension is a type of automotive suspension that uses an onboard control system to control the vertical movement of the vehicle's wheels and axles relative to the chassis or vehicle frame, rather than the conventional passive suspension that relies solely on large springs to maintain static support and dampen the vertical wheel movements caused by the road surface.
Toyota Active Control Suspension was (according to Toyota) the world's first fully active suspension. [ 1 ] Two versions of Toyota's Active Control Suspension system went into production - the first was a very limited production run from 1990 to 1991 of 300 units of the ST183 Celica , called the Active Sports. [ 2 ]
If suspension is externally controlled, then it is a semi-active or active suspension — the suspension is reacting to signals from an electronic controller. For example, a hydropneumatic Citroën will "know" how far off the ground the car is supposed to be, and constantly resets to achieve that level, regardless of load.
That work included a rebuilt engine and gearbox, wiring, and brakes, but didn’t include getting the active suspension working again, something that would require the full recommissioning of the ...
In 2007, the Mercedes-Benz F700 concept introduced the PRE-SCAN suspension, an early prototype road scanning suspension, using lidar sensors, based on Active Body Control. In 2013 the Mercedes-Benz S-Class (W222) introduced the series production version of PRE-SCAN, but with a stereo camera instead of laser projectors.
"For on-road, we now have a really high roll stiffness thanks to the AMG active drive control suspension, giving the car better steering precision, better on-road performance," Walliser said.
The electric powered active stabilizer suspension was first used on the 2007 Lexus GS. The 2008 Lexus LS 600h was the second vehicle to feature the active stabilizer system. Active Power Stabilizer Suspension System (APSSS) , is an electric active suspension system with active anti-roll bars developed by Toyota Motor Corporation for its high ...
The semi-active suspension system was widely used on luxury and top sport trim packages on most of Toyota's products sold internationally. Its popularity fell after the “ bubble economy ” as it was seen as an unnecessary expense to purchase and maintain, and remained in use on luxury or high performance sports cars.