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Torque control device and power steering device

A technology of steering control and steering mechanism, which is applied in the direction of power steering mechanism, steering mechanism, steering rod, etc., which can solve the problem that the viscosity attenuation cannot be efficiently given, and achieve the effect of high-efficiency viscosity attenuation

Active Publication Date: 2020-04-07
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 device and power steering device
  • Torque control device and power steering device
  • Torque control device and power steering device

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Embodiment Construction

[0016] Hereinafter, embodiments of a steering control device and a power steering device according to the present disclosure will be described with reference to the drawings. However, excessively detailed descriptions may be omitted in order to avoid unnecessarily lengthy descriptions below and to facilitate understanding by those skilled in the art. For example, detailed descriptions of well-known items and repeated descriptions of substantially the same configurations may be omitted.

[0017] figure 1 It is a schematic diagram showing an embodiment of the power steering device of the present invention.

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

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Abstract

The invention provides a torque control device and a power steering device which can give efficient viscous attenuation considering the influence of the frequency band. A steering control device for controlling a rotation angle of a motor that drives a steering mechanism according to a rotation angle of a steering wheel, includes a torque controller to control torque of the motor with the rotationangle of the steering wheel as a command value, and a phase advance processor to perform feedback control on the torque of the motor with at least one of the rotation angle and angular velocity of the motor as a command value, and advance a phase of a signal waveform to be fed back for a partial frequency range that includes a resonance frequency of the motor and the steering mechanism in an entire frequency range.

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 a resonance mode is known. [0003] For example, in Patent Document 1, a structure is known in which a stabilization control unit is added to an auxiliary control unit to realize viscosity damping. In the above configuration, 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 of the motor and the torque fluctuation, and thus the above characteristics can be improved by further adding the steering angle control. [0005] Patent Document 1: Japanese Patent Laid-Open No. 2014-162321 [0006] However, since simple angular velocity feedback acts on...

Claims

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Application Information

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Patent Type & Authority Applications(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