Motor control anti-windup and voltage saturation design for electric power steering

一种电马达、限制电压的技术，应用在电动机控制、动力转向机构、电动发电机控制等方向，能够解决很差整体控制系统性能和不稳定性等问题

Active Publication Date: 2016-12-07
STEERING SOLUTIONS IP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This condition known as controller windup can produce poor overall control system performance and instability

Method used

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  • Motor control anti-windup and voltage saturation design for electric power steering
  • Motor control anti-windup and voltage saturation design for electric power steering
  • Motor control anti-windup and voltage saturation design for electric power steering

Examples

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Embodiment Construction

[0019] figure 1 A motor control system 10 according to one aspect of the invention is shown. In the exemplary embodiment shown, the motor control system 10 includes a motor 20 , an inverter 22 , a supply voltage 24 and a control module 30 (also referred to as a controller). A voltage supply 24 supplies a supply voltage to the motor 20 . In some embodiments, voltage supply 24 is a 12 volt battery. However, it should be understood that other types of voltage supplies may also be used. Inverter 22 through may be labeled as ' ',' 'and' ' A plurality of connectors 32 (for example, three connectors) are connected to the motor 20. In some embodiments, motor 20 is a polyphase, permanent magnet synchronous motor (PMSM). In this example, the motor 20 is a three-phase PMSM. The control module 30 is connected to the motor 20 through the inverter 22 .

[0020] The control module 30 receives motor torque commands from a torque control system 34 such as, for example, a steering...

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PUM

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Abstract

The invention relates to a motor control anti-windup and voltage saturation design for electric power steering, more concretely a system for preventing controller windup in an electric motor which includes a limiting module that determines a limited voltage command in response to a commanded voltage exceeding an available voltage of a motor power source, the limited voltage command is applied to an electric motor, a saturation parameter module that determines a saturation parameter based on the limited voltage command, the saturation parameter indicates a magnitude of the commanded voltage exceeding the available voltage, a non-linear processing module that processes the saturation parameter to generate a processed saturation parameter, and a reference current modifier module that generates a modified current command based on the processed saturation parameter, the modified current command is applied to the control system to improve the current command tracking.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority to US Provisional Patent Application Serial No. 62 / 167,520, filed May 28, 2015, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to motor control anti-windup and voltage saturation design for electric power steering (EPS). Background technique [0004] Electric power steering requires an electric motor that provides steering assistance to be operated using a torque control method. Field Oriented Control (FOC) is utilized when using a Permanent Magnet Synchronous Motor (PMSM). This allows alternating current (AC) three-phase motor voltage and associated current signals to be converted into a synchronously rotating reference frame (ie, d / q axis reference frame). In the d / q axis reference frame, the motor voltage and current become direct current (DC) quantities. The FOC torque control technique can be imple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P21/22
CPCH02P21/0003B62D5/046H02P29/0241H02P21/14
Inventor P.普拉莫J.A.克莱瑙
Owner STEERING SOLUTIONS IP HLDG
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