US 12,188,843 B2
Test device for controlling a test process and method for testing a steering device
Sigeru Matsumoto, Tokyo (JP); Hiroshi Miyashita, Tokyo (JP); Kazuyoshi Tashiro, Kanagawa (JP); Kazuhiro Murauchi, Tokyo (JP); Hiroyuki Miura, Tokyo (JP); Akihiro Yonekawa, Kanagawa (JP); and Kazuki Shinohara, Tokyo (JP)
Assigned to KOKUSAI KEISOKUKI KABUSHIKI KAISHA, Tokyo (JP)
Filed by KOKUSAI KEISOKUKI KABUSHIKI KAISHA, Tama (JP)
Filed on Mar. 12, 2021, as Appl. No. 17/200,438.
Application 17/200,438 is a continuation in part of application No. PCT/JP2019/037598, filed on Sep. 25, 2019.
Claims priority of application No. 2018-185741 (JP), filed on Sep. 28, 2018; and application No. 2018-212723 (JP), filed on Nov. 13, 2018.
Prior Publication US 2021/0199539 A1, Jul. 1, 2021
Int. Cl. G01M 17/007 (2006.01); G06N 20/00 (2019.01)
CPC G01M 17/007 (2013.01) [G06N 20/00 (2019.01)] 19 Claims
OG exemplary drawing
 
1. A test device, comprising:
an input side drive part configured to rotationally drive a steering shaft of a steering device as a specimen;
a control part configured to control the input side drive part; and
a position detecting part configured to detect an angular position of the steering shaft,
wherein the control part is configured to:
control the input side drive part to restrict a maximum value of a torque of the steering shaft when the angular position of the steering shaft reaches an end-abutment position being an end of a mechanical movable range of the steering shaft, and
control driving of the steering shaft by:
a position control in which the angular position of the steering shaft is used as a controlled variable; and
a torque control in which the torque of the steering shaft is used as a controlled variable,
wherein the control part:
performs the position control when the angular position of the steering shaft is outside a first angular range including the end-abutment position, and
in response to determining that the angular position of the steering shaft is within the first angular range, switches the driving of the steering shaft from the position control to the torque control.