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Why Escalators Move at Steady Speeds
自动扶梯为何保持匀速运行
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Escalators move up or down without speeding up or slowing down.自动扶梯匀速上下运行，既不加速也不减速。
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An electric motor turns gears at a constant rate.电动机以恒定速度驱动齿轮。
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A speed sensor checks motion many times each second.速度传感器每秒多次检测运动状态。
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If the belt slows even slightly, the system adds more power.若传送带稍有减速，系统即增加动力。
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Safety brakes engage instantly if speed goes too high.一旦超速，安全制动器立即启动。
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This steady pace keeps riders balanced and safe.这种恒定速度确保乘客平稳安全。
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Steps stay level while moving, thanks to linked metal tracks.依靠联动金属轨道，梯级运行中始终保持水平。
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No one needs to push or adjust—machines handle it all.无需人工推动或调节，全部由机器自动完成。