Abs: Variations And Commonalities

摘要

Antilock braking may seem relatively new,but it first was used in aircraft,because the kind of pedal-pumping action once commonly practiced by expert automobile drivers is difficult or impossible in an airplane.The first systems,say some sources,go back to 1929. Microprocessor control in the 1980s made antilock braking systems (ABS) for cars take off.Gradually.Only about 3 percent of new 1987 models-mostly expensive ones-featured ABS.Costs dropped,though,as installations proliferated,both because higher production lowers per-unit cost and because engineers developed less-expensive systems.