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Inverter control method during mosfet short circuit

A braking torque, low-pass filter technology, applied in the control system, motor control, torque ripple control and other directions, can solve problems such as driver discomfort

Active Publication Date: 2019-06-18
STEERING SOLUTIONS IP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This in turn causes discomfort for the driver using the steering system

Method used

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  • Inverter control method during mosfet short circuit
  • Inverter control method during mosfet short circuit
  • Inverter control method during mosfet short circuit

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Embodiment Construction

[0024] As used herein, the terms module and sub-module refer to one or more processing circuits, such as application-specific integrated circuits (ASICs), electronic circuits, processors (common, dedicated, or group) and memory that execute one or more software or firmware programs , combinational logic circuits, and / or other suitable components that provide the described functionality. As is understood, the sub-modules described below may be combined and / or further divided. Further, for ease of understanding, the term "signal" used herein is defined as any electrical signal or any stored or transmitted value. For example, a signal may include voltage or current. Still further, a signal may include any stored or transmitted value, such as a binary value, a scalar value, or the like.

[0025] refer to figure 1 with figure 2 , a vehicle 10 having a steering system 12 and a motor control system 14 is shown.

[0026] A steering system 12 is provided for steering the vehicle ...

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Abstract

The invention relates to a control method of an inverter during MOSFET short circuit. The described technical solution is used to alleviate the braking torque in the electric motor of the steering system caused by the short circuit of the FET. For example, a typical mitigation system includes a mitigation module that regulates motor torque in response to a FET short. The mitigation system also includes a mitigation enabling module that selectively enables and disables the mitigation module based on the steering wheel torque signal. Further, the mitigation system includes a damping module that reduces motor torque based on a motor speed signal for the motor.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority from US Provisional Patent Application Serial No. 62 / 288224, filed January 28, 2016, the entire contents of which are hereby incorporated by reference. Background technique [0003] The present application relates generally to the field of electric motor control, and in particular to automotive power steering control systems. [0004] Typically, today's automobiles use a power steering system, such as an electric power steering (EPS) system. In the EPS system, the driver is helped to steer the car through the powertrain driven by electricity. For example, the EPS system provides steering torque assist directly driven by the electric motor. The motor itself may comprise a three-phase permanent magnet synchronous motor, or any other motor. The electric motor is driven by a power source, such as the vehicle battery, by applying an inverter system. The drive is typically monitored ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04H02P6/10
CPCB62D5/0484H02P6/10B62D5/0487H02P29/032B62D5/0463H02P29/027B62D6/10B62D15/02H02P27/08H02P29/028
Inventor D·B·斯克伦格A·钱迪
Owner STEERING SOLUTIONS IP HLDG