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Compensation control apparatus of motor driven power steering system

A technology for compensating control and control parts, applied in the direction of automatic steering control components, transportation and packaging, steering mechanism, etc., can solve problems such as delay and system responsiveness reduction, to ensure phase margin, reduce gain rise, reduce inertia torque Effect

Active Publication Date: 2015-11-25
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The stabilization filter can reduce the resonance and noise vibration ripples of the MDPS system, but the section covered by the notch filter is relatively wide, and it also operates on the low frequency band of the main control section, that is, the 1Hz peripheral frequency band, causing the system to respond Problems with reduced performance and delays
[0006] That is to say, if the stabilization filter is applied, in order to eliminate the system resonance, the loss of auxiliary compensation in the low frequency band cannot be avoided. Therefore, in order to maintain the main function of the stabilization filter and ensure the stabilization of the MDPS system, it is necessary to develop a system that can Compensation logic implementing compensation for low frequency band phase margin

Method used

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  • Compensation control apparatus of motor driven power steering system
  • Compensation control apparatus of motor driven power steering system
  • Compensation control apparatus of motor driven power steering system

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Embodiment Construction

[0033] An MDPS compensation control device according to an embodiment of the present invention will be described below in conjunction with the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings are exaggerated for clarity and convenience of description, and the following terms are defined according to the functions of the present invention, and are not compatible with users and operators. There may be some differences in the intent or usage of the author, so the definitions of these terms must be based on the entire content of this manual.

[0034] figure 1 is a block diagram showing an MDPS compensation control device according to an embodiment of the present invention.

[0035] Such as figure 1 As shown, an MDPS compensation control device according to an embodiment of the present invention includes a vehicle speed sensor 10 , a torque sensor 20 and a control unit 30 .

[0036] The vehicle speed sensor 10 measure...

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Abstract

A compensation control apparatus of motor driven power steering may include: a torque sensor for measuring a driver's column torque inputted to a steering wheel; and a controller for generating an assist torque based on the column torque measured through the torque sensor, compensating for a phase margin in a low-frequency band for the generated assist torque, detecting a resonance frequency to attenuate resonance, and outputting a final assist torque.

Description

technical field [0001] The invention relates to a compensation control device of MDPS. Specifically, in the process of determining the assist torque based on the boost output of the vehicle speed and column torque in the MDPS system, the compensation control of the MDPS compensates for the response reduction and delay in the low frequency band due to the influence of the notch filter device. Background technique [0002] Electric power steering (MOTOR DRIVE POWERSTEERING, hereinafter referred to as "MDPS") is a device that switches the torque generated when the driver turns the steering wheel into actual output to implement vehicle steering. [0003] The MDPS is divided into C-MDPS, P-MDPS, R-MDPS, etc. according to the method used to control the steering. The C-MDPS method is to assemble a motor on the column shaft, and calculate the high-end logic through the motor to generate auxiliary torque. Appropriate instruction value for . [0004] The existing Mainassist logic t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00B62D101/00B62D119/00
CPCB62D5/04B62D6/00B62D5/0463B62D5/0409
Inventor 张硕桓吴帨煜
Owner HYUNDAI MOBIS CO LTD
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