Keio University

Dmg Mori Company Limited

Tokai National Higher Education and Research System

Saitama University

Bosch Automotive Systems Corporation

Junichi Kaneko

Naruhiro Irino

Yasuhiro Imabeppu

Norikazu Suzuki

Toshiko Okazaki

Yasuhiro Kakinuma

A machining state diagnosis apparatus () includes a machining state information estimation device (), a learning information storage () storing information on relationship between estimated machining state information and actual machining state information, and a machining state diagnosis unit () diagnosing a machining state in actual machining using control information, based on machining state information obtained during the actual machining, machining state information estimated based on corresponding control information by the machining state information estimation device (), and the relationship information stored in the learning information storage. The machining state information estimation device () includes an information storage () storing the control information and information on a workpiece and a tool, a machining state information estimator () estimating machining state information in relatively moving the workpiece and the tool, based on the information on the workpiece and the tool and the control information, and an image data generator () generating image data based on the estimated machining state information.

Machining state information estimation device and machining state diagnosis apparatus

In an electronic control unit, a duty conversion mapfrom which a driving duty in energizing and driving an electromagnetic coil, not shown, of an electromagnetic vacuum adjustment valveon the basis of a variable equivalent to target quantity of feedback of exhaust gas, for example, the magnitude of a desired negative pressure to a negative pressure output port (not shown) of the electromagnetic vacuum adjustment valve, and a duty correction mapfrom which a correction value for the driving duty is acquired on the basis inputted battery voltage and engine cooling water temperature, are provided. The driving duty is multiplied by the correction value acquired from the duty correction map, and on the basis of the corrected driving duty, energization to the electromagnetic vacuum adjustment valveis performed by a driving circuit

Exhaust gas recirculation apparatus

Growing community of inventors

Saitama, Japan

Junichi Kaneko