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Torque Control and Power Steering

A power steering and steering control technology, applied in power steering mechanism, steering mechanism, steering rod, etc., can solve the problem of inability to efficiently impart viscous attenuation, and achieve the effect of efficient viscous attenuation

Active Publication Date: 2022-07-29
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since the simple angular velocity feedback acts on the entire frequency band, viscous attenuation is also applied to the steering characteristics, and viscous attenuation cannot be effectively applied.

Method used

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  • Torque Control and Power Steering
  • Torque Control and Power Steering
  • Torque Control and Power Steering

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Embodiment Construction

[0016] Hereinafter, embodiments of the steering control device and the power steering device of the present disclosure will be described with reference to the accompanying drawings. However, in order to prevent the following description from being unnecessarily redundant and to make it easy for those skilled in the art to understand, an excessively detailed description may be omitted. For example, detailed descriptions of well-known matters and repeated descriptions of substantially the same configurations may be omitted.

[0017] figure 1 It is a schematic diagram which shows one Embodiment of the power steering apparatus of this invention.

[0018] like figure 1 As shown, in this embodiment, a column-type electric power steering apparatus is exemplified. The electric power steering device 9 is mounted on a steering mechanism of a wheel of an automobile. The electric power steering device 9 is a column-type power steering device that directly reduces the steering force by...

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Abstract

Providing a torque control device and a power steering device can provide efficient viscous damping that takes into account the influence of frequency bands. One aspect of a steering control device controls a rotation angle of a motor that drives a steering mechanism based on a rotation angle of a steering wheel, wherein the steering control device includes a torque control unit that controls the motor using the rotation angle of the steering wheel as a command value. and a phase advance processing unit that uses at least one of the rotation angle and angular velocity of the motor as a command value to feedback-control the torque of the motor, and controls the torque of the motor for the entire frequency band including the motor and the steering mechanism. A part of the frequency band including the resonant frequency advances the phase of the feedback signal waveform.

Description

technical field [0001] The present invention relates to a torque control device and a power steering device. Background technique [0002] Conventionally, as steering control (assist control) of an electric power steering apparatus, a control technique for stabilizing the resonance mode is known. [0003] For example, in Patent Document 1, a structure in which a stabilization control unit is added to an auxiliary control unit to realize viscous attenuation is known. In the above configuration, the torque feedback control is performed using the steering torque detected by the torque sensor. [0004] Here, since the torque feedback is performed, the followability to the target torque is affected by the loss torque and torque fluctuation of the motor. Therefore, the above characteristics can be improved by further adding steering angle control. [0005] Patent Document 1: Japanese Patent Laid-Open No. 2014-162321 [0006] However, in simple angular velocity feedback, since i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04B62D6/00B62D113/00B62D119/00B62D137/00
CPCB62D5/0463B62D6/00B62D6/008B62D6/10B62D15/0215B62D15/0235B62D15/021B62D5/0409
Inventor 石村裕幸远藤修司孙汉宇
Owner NIDEC CORP