The investigation, jointly conducted by the National Aeronautics and Space Administration, concluded that the two mechanical safety defects -- sticky gas pedals and a design flaw that enables accelerator pedals to become trapped by floor mats -- caused the sudden acceleration
in Toyota vehicles, in line with the carmaker's view.
of the interceptor and the LOS angular rates under three guidance laws are plotted in Figures 7 and 8, respectively.
Yoshiyuki, "Soil slopes under combined horizontal and vertical seismic accelerations
," Earthquake Engineering and Structural Dynamics, vol.
Similarly, sinusoidal excitation, with amplitudes corresponding to 490 m/[s.sup.2] and 1000 rad/[s.sup.2] and a frequency band of 0 kHz to 50 kHz and 200 steps, was exerted on the 12-DOF force/acceleration sensor, in the harmonic analysis of the 6-axis linear/angular accelerations
. The natural frequencies in the direction of the 6-axis acceleration
were obtained as shown in Figure 9 by combining the peak value trends of amplitude-frequency and phase-frequency characteristic curves, in all directions, as shown in Table 8.
For small accelerations
, using the first few terms of the Taylor expansion, this time dilation expression can be written as
The figure demonstrates that the model motions of (a) accelerations/angular accelerations
, and (b) forces/torques are accurately simulated in the frequency region below 20 Hz.
The vibration from vehicle's brake and acceleration
, friction between tire and road surface, excitation of transmission shaft, engine, and other rotating parts are the main factors that affect vehicle ride comfort, which is called vibration comfort.
The most rapid 0-30mph acceleration
on WLTC is 15 seconds.
Appropriate application should require a determination whether a valid or factually new default occurred, whether accelerations
or decelerations factually occurred, and whether the prior foreclosure action was dismissed voluntarily or involuntarily.
Repeated high-intensity actions were defined as a minimum of 3 consecutive bouts (sprints >18 km x [h.sup.-1] or accelerations
>1.5 m x [s.sup.-2]) interspersed with a maximum of 45 s.
Since gravitational acceleration
simulation must be considered in shaking table test, similarity coefficient of mass density fixed for the test is 1.0.
The main problem of MTT is how to deal with the unknown fast change in the maneuvering acceleration
. Many techniques and methods [2-5] have been suggested to solve the problem during last years.