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Angle computing device and computing device

A computing device and angle technology, applied in measuring devices, transportation and packaging, using electric/magnetic devices to transmit sensing components, etc., can solve problems such as inability to properly calculate motor rotation angles, reduce power consumption, and improve reliability sexual effect

Inactive Publication Date: 2019-11-19
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the MPU may not be able to properly calculate the multi-turn rotation angle of the motor

Method used

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  • Angle computing device and computing device
  • Angle computing device and computing device
  • Angle computing device and computing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0097] Hereinafter, the angle computing device in the first embodiment mounted on an electric power steering device (hereinafter referred to as "EPS") will be described. Such as figure 1 As shown, the EPS includes: a steering mechanism 1 for steering the steering wheels 15 and 15 based on the driver's operation of the steering wheel 10; 20; and an angle calculation device 30 for detecting the rotation angle θ of the motor 20 and controlling the motor 20.

[0098] The steering mechanism 1 has a steering shaft 11 to which a steering wheel 10 is coupled, and a rack shaft 12 as a steering shaft that reciprocates in an axial direction according to the rotation of the steering shaft 11 . The steering shaft 11 has a steering column shaft 11a connected to the steering wheel 10, an intermediate shaft 11b connected to the lower end of the steering column shaft 11a, and a pinion shaft 11c connected to the lower end of the intermediate shaft 11b. The rack shaft 12 and the pinion shaft 1...

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PUM

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Abstract

The present invention relates to an angle computing device and a computing device. The angle computing device includes a first computing unit (31) configured to compute a rotation angle of a motor based on a detection signal from a detection unit that detects the rotation angle of the motor, and a second computing unit (32) configured to compute turn number information indicating the number of turns of the motor as information used to compute the rotation angle based on the detection signal from the detection unit. When a start switch of a vehicle is off, the first computing unit (31) stops and the second computing unit (32) computes the turn number information. When the start switch is on, the first computing unit (31) computes the rotation angle using the turn number information that iscomputed by the second computing unit (32) while the start switch is off.

Description

technical field [0001] The present invention relates to an angle computing device. Also, the present invention relates to a computing device that computes rotation information for detecting a rotation angle. Background technique [0002] The angle calculation device of Japanese Patent No. 5389101 includes a microcomputer (hereinafter referred to as "microcomputer"), and the microcomputer functions as a main calculation unit and a sub-calculation unit. The angle calculation device controls the motor by the main calculation unit when the ignition switch is turned on, and stops the control of the motor by the main calculation unit when the ignition switch is turned off. When the ignition switch is turned on, the main calculation unit calculates the rotation angle of the motor based on the motor rotation angle signal detected by the resolver, and performs control of the motor based on the calculated rotation angle. On the other hand, there are cases where the steering wheel is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D15/02B62D5/04G01D5/14G01D5/244
CPCB62D15/0235B62D5/0463B62D5/0484G01D5/145G01D5/24461B62D15/021B62D6/002B62D5/046G01D5/245
Inventor 小池进足立丈英
Owner JTEKT CORP