From the archive: When audio tech was used to create suspension

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From the archive: When audio tech was used to create suspension
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Bose's proactive system used currents and algorithms to make cars much calmer over bumps

We were recently amazed by Porsche’s new Active Ride system, which nullified roll and pitch in a 2.4-tonne Panamera Turbo, even at track speeds. Twenty years ago, we were similarly impressed by novel suspension from a source we’d never have expected: Bose. In the Porsche system, each damper is actuated by a sensor-fed unit, inside which electric motors drive hydraulic pumps to lower or raise the wheel, thereby keeping the car’s body level at all times.

The motors even did energy regeneration, whereas a shock absorber would just let energy go to waste, meaning the suspension system’s power use was only a third that of an air-conditioning system. American Amar Bose earned a PhD in electrical engineering from the prestigious Massachusetts Institute of Technology in 1956.

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