Lee J D, McGehee D V, Brown T L, Nakamoto J
Department of Mechanical and Industrial Engineering, University of Iowa, Iowa City, IA 52242, USA.
Ergonomics. 2007 Jun;50(6):828-36. doi: 10.1080/00140130701223220.
Adaptive cruise control (ACC) requires that the driver intervene in situations that exceed the capability of ACC. A brake pulse might provide a particularly compatible means of alerting the driver to situations in which the acceleration authority of the ACC has been exceeded. This study examined the sensitivity of the driver to brake pulses of five different amplitudes (0.01-0.025 g) and five different durations (50-800 ms). Drivers were sensitive to accelerations as low as 0.015 g. Pulse duration interacted with pulse amplitude, such that moderate duration pulses were more detectable than long and short duration pulses at intermediate levels of pulse amplitude. A power function with an exponent of 1.0 accounted for 99% of the variance in drivers' sensitivity to pulse amplitude; however, a power function with an exponent of 0.23 accounted for only 70% of the variance in drivers' sensitivity to pulse duration. These results can help designers create ACC algorithms and develop brake pulse warnings.
自适应巡航控制（ACC）要求驾驶员在超出ACC能力的情况下进行干预。制动脉冲可能是一种特别合适的方式，用于提醒驾驶员ACC的加速权限已被超越的情况。本研究考察了驾驶员对五种不同幅度（0.01 - 0.025g）和五种不同持续时间（50 - 800毫秒）的制动脉冲的敏感度。驾驶员对低至0.015g的加速度敏感。脉冲持续时间与脉冲幅度相互作用，使得在中等脉冲幅度水平下，中等持续时间的脉冲比长和短持续时间的脉冲更易被察觉。指数为1.0的幂函数解释了驾驶员对脉冲幅度敏感度方差的99%；然而，指数为0.23的幂函数仅解释了驾驶员对脉冲持续时间敏感度方差的70%。这些结果有助于设计师创建ACC算法并开发制动脉冲警告。
