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Seat device for vehicle

A seat and vehicle technology, applied to vehicle seats, special positions of vehicles, movable seats, etc., can solve problems such as the inability to determine the direction of rotation, and achieve the effect of suppressing errors

Inactive Publication Date: 2016-06-08
AISIN SEIKI KK
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Problems solved by technology

However, after the motor drive stops, the direction of rotation cannot be determined from its control commands

Method used

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  • Seat device for vehicle
  • Seat device for vehicle
  • Seat device for vehicle

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no. 2 Embodiment approach ）

[0057] Next, a second embodiment embodying the present invention will be described with reference to the drawings. However, this embodiment differs from the above-mentioned first embodiment only in the method of estimating the rotation direction after the drive of the motor is stopped. Therefore, the same reference numerals are assigned to the same configurations as those in the first embodiment, and description thereof will be omitted.

[0058] Such as Figure 5 As shown, in the present embodiment, when the ECU 13 continuously detects pulse edges after the motor drive stops, the interval between two pulse edges continuously detected after the motor drive stops is specifically set to The combination of the "rising edge (E1)" and "falling edge (E2)" is calculated as the pulse width ta. In addition, in the ECU 13, the interval between two consecutive pulse edges detected before the motor drive stops, specifically, is the same as The combination of "rising edge (Ex)" and "falli...

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Abstract

The present invention provides a vehicle seat device capable of specifying a rotation direction after a motor drive stops with a simple configuration, thereby suppressing errors in position detection based on pulse counts of the motor. When the ECU continuously detects the pulse edges (E1, E2) after the motor drive stops, it determines whether the motor rotation speed after the drive stop indicated by each pulse edge (E1, E2) is faster than the drive speed assuming that the rotation direction does not change. The motor spins fast before stopping. And, when the pulse edge ( E2 ) indicating that the rotation speed of the motor after the stop of the driving is generated, it is estimated that the rotation of the motor has occurred counterclockwise.

Description

technical field [0001] The present invention relates to a vehicle seat device. Background technique [0002] Conventionally, there has been a vehicle seat device that can positionally adjust components of the vehicle seat, such as a seat cushion and a seat back, by a drive source for posture adjustment. For example, Patent Document 1 discloses a seat sliding device capable of adjusting a sliding position of a seat cushion by driving a motor. That is, the seat slide device includes a lower rail fixed to a vehicle floor, and an upper rail provided so as to be movable relative to the lower rail. Furthermore, the upper rail is configured to move in the extending direction of the lower rail based on the driving force of the motor. [0003] In addition, the seat slide device detects the moving position of the upper rail by counting (accumulating) motor pulses, that is, pulse edges of a pulse signal output from a rotation sensor provided in the motor. Thus, it is possible to ins...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60N2/04B60N2/90
CPCB60N2/0272B60N2/02246G05D3/20
Inventor 冈田隆宝角惣一朗前田敏朗
Owner AISIN SEIKI KK
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