Abstract:
A relational expression calculator calculates a relational expression by performing approximation calculation for data strings each of which associates the value of a subject factor, which varies according to a user or an environment, with an input stress measurement value that is measured when a subject device is used. An input stress calculator calculates an input stress, which is input to the subject device, according to the relational expression and to index data on the subject factor. A failure rate calculator calculates a failure rate of the subject device according to the input stress and to a characteristic value distribution of the subject device.
Abstract:
An inverted two-wheeled vehicle includes: an inverted two-wheeled vehicle body; a pair of step plates, a rider putting both feet on the pair of step plates; a parallel link mechanism that links the pair of step plates so that the pair of step plates are inclined to the right or the left in unison; a handle that is supported by the inverted two-wheeled vehicle body; and a controller that controls a turning movement of the inverted two-wheeled vehicle according to an inclination of the pair of step plates in the horizontal direction. The handle is supported by the inverted two-wheeled vehicle body so that the handle does not work with the pair of step plates when the step plates are inclined to the right or the left.