An active rollover protection (ARP), is a system that recognizes impending rollover and selectively applies brakes to resist.[1]
ARP builds on electronic stability control and its three chassis control systems already on the vehicle – anti-lock braking system, traction control and yaw control. ARP adds another function: detection of an impending rollover. Excessive lateral force, generated by excessive speed in a turn, may result in a rollover. ARP automatically responds whenever it detects a potential rollover. ARP rapidly applies the brakes with a high burst of pressure to the appropriate wheels and sometimes decreases the engine torque[1] to interrupt the rollover before it occurs.
Rollovers can also occur when the vehicle is knocked into a stationary object such as a curb. In these so-called "trip events",[2] a vehicle hit from the side but kept from moving laterally by a curb would produce a moment about the center of gravity sufficient to produce a rollover. To counteract this, rollover stability systems have begun to incorporate an active suspension system in rollover protection. To accomplish this, the onboard computer uses data from the inertial measurement unit (IMU) to determine when a vehicle is in a rollover condition independent of yaw rate and vehicle speed. When the computer determines that the vehicle is at risk of rollover, it calculates the direction of roll and activates the active suspension system. The force produced in the suspension creates a moment (torque) opposite to that created by the lateral force, and keeps the vehicle safe.[2]
The phrase is also used for active roll over bars for convertible cars, such as the Volkswagen Beetle, which can detect potential roll-over situations and automatically raises rollover bars hidden in the rear head restraints in a fraction of a second.[3]
^ abHrovat, Davorin D., Hongtei E. Tseng, and Michael G. Fodor. "Roll over stability control for an automotive vehicle having an active suspension". Ford Global Technologies, assignee. Patent 7140619. 2006.
^"Active roll-over protection system". Volkswagen. Retrieved 28 August 2012.
External linksedit
Continental Automotive Systems
SafelyThere – Continental Automotive Systems
Physics of rollover crashes
April 11, 2024
active, rollover, protection, active, rollover, protection, system, that, recognizes, impending, rollover, selectively, applies, brakes, resist, builds, electronic, stability, control, three, chassis, control, systems, already, vehicle, anti, lock, braking, sy. An active rollover protection ARP is a system that recognizes impending rollover and selectively applies brakes to resist 1 ARP builds on electronic stability control and its three chassis control systems already on the vehicle anti lock braking system traction control and yaw control ARP adds another function detection of an impending rollover Excessive lateral force generated by excessive speed in a turn may result in a rollover ARP automatically responds whenever it detects a potential rollover ARP rapidly applies the brakes with a high burst of pressure to the appropriate wheels and sometimes decreases the engine torque 1 to interrupt the rollover before it occurs Rollovers can also occur when the vehicle is knocked into a stationary object such as a curb In these so called trip events 2 a vehicle hit from the side but kept from moving laterally by a curb would produce a moment about the center of gravity sufficient to produce a rollover To counteract this rollover stability systems have begun to incorporate an active suspension system in rollover protection To accomplish this the onboard computer uses data from the inertial measurement unit IMU to determine when a vehicle is in a rollover condition independent of yaw rate and vehicle speed When the computer determines that the vehicle is at risk of rollover it calculates the direction of roll and activates the active suspension system The force produced in the suspension creates a moment torque opposite to that created by the lateral force and keeps the vehicle safe 2 Contents 1 Other uses 2 See also 3 References 4 External linksOther uses editMain article Roll over protection structure The phrase is also used for active roll over bars for convertible cars such as the Volkswagen Beetle which can detect potential roll over situations and automatically raises rollover bars hidden in the rear head restraints in a fraction of a second 3 See also editAnti roll bar Crosswind stabilization Gyroscope Roll cage Roll over protection structure Side Impact Protection System WHIPS Whiplash Protection System References edit a b http www nrd nhtsa dot gov pdf esv esv19 05 0471 O pdf Archived 2013 12 19 at the Wayback Machine Bosch Rollover Mitigation Functions a b Hrovat Davorin D Hongtei E Tseng and Michael G Fodor Roll over stability control for an automotive vehicle having an active suspension Ford Global Technologies assignee Patent 7140619 2006 Active roll over protection system Volkswagen Retrieved 28 August 2012 External links editContinental Automotive Systems SafelyThere Continental Automotive Systems Physics of rollover crashes Retrieved from https en wikipedia org w index php title Active rollover protection amp oldid 945351872, wikipedia, wiki, book, books, library,
