Patent ID: 11858380
Assignee: HYUNDAI TRANSYS INC.
Field: Transport (Mechanical engineering)
Classification: CPC B  H | IPC B

Claim 5:
6. A folding control method for vehicle seats using a folding control apparatus configured to control folding or unfolding of a first vehicle seat and a second vehicle seat, the folding control apparatus comprising a first motor configured to generate driving force necessary to fold the first vehicle seat, a second motor configured to generate driving force necessary to fold the second vehicle seat, a first Hall sensor configured to detect at least one of a rotational speed and a rotation amount of the first motor, a second Hall sensor configured to detect at least one of a rotational speed and a rotation amount of the second motor, and at least one control module configured to control at least one of the first motor and the second motor based on detection results of the first Hall sensor and the second Hall sensor, wherein the folding control method comprises:
receiving a folding or unfolding command for each of the first vehicle seat and the second vehicle seat from a user;
the control module applying driving signals having an identical duty ratio to the first motor and the second motor;
the first Hall sensor and the second Hall sensor acquiring position information of the first motor and the second motor to acquire a first pulse and a second pulse, respectively;
the control module comparing a number of first pulses and a number of second pulses for a predetermined number with each other; and
the control module controlling at least one of the first motor and the second motor based on a difference between the number of first pulses and the number of second pulses,
wherein the step of comparing the number of first pulses and the number of second pulses with each other comprises:
determining whether the difference between the number of first pulses and the number of second pulses is equal to or greater than a predetermined value a (a primary comparison step); and
determining whether the difference between the number of first pulses and the number of second pulses is equal to or greater than a predetermined value b (a secondary comparison step),
the predetermined value b being greater than the predetermined value a, wherein when the difference between the number of first pulses and the number of second pulses is equal to or greater than a predetermined value b, the control mode stops application of a driving signal to a motor having a larger number of pulses, which is one of the first pulses and the second pulses.