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Electronic controller for electric power steering control system and working method thereof

An electric power steering and electronic controller technology, applied in the field of auto parts, can solve the problems of steering wheel shaking, hidden dangers, loss of angle information, etc., and achieve the effect of improving accuracy, improving work efficiency, and avoiding single-point failure failure.

Pending Publication Date: 2022-06-14
HELLA SHANGHAI ELECTRONICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the electronic controller in the current electric power steering control system mainly has the problem that once one external communication fails, one external power supply fails, or the angle information is lost, it will cause the steering wheel to vibrate and cause potential safety hazards.
Therefore, once a failure occurs, the system will enter the fail-safe mode (Fail-safe Mode), stop providing any power assistance, making the vehicle completely paralyzed, and cannot fully satisfy the full redundancy mode (Fail Operational Mode): that is, provide partial power assistance , pull over (limp-aside) or limp home (limp-Home), or drive to the request of the repair shop

Method used

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  • Electronic controller for electric power steering control system and working method thereof
  • Electronic controller for electric power steering control system and working method thereof

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Embodiment Construction

[0029] The advantages of the present invention are further described below with reference to the accompanying drawings and specific embodiments.

[0030] see figure 1, which is a schematic structural diagram of an electronic controller for an electric power steering control system according to a preferred embodiment of the present invention. As can be seen from the figure, the electronic controller provided in this embodiment mainly includes the following structures: a first power supply module, a first power management module, a first microcontroller, a first motor driver, a first torque angle sensor, A second power module, a second power management module, a second microcontroller, a second motor driver, a second torque angle sensor, and a motor. The connection relationship between the above modules includes that the first power supply module is connected to the first power supply management module, and the first power supply management module distributes and manages the po...

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Abstract

The invention aims to provide an electronic controller for an electric power steering control system and a working method of the electronic controller. According to the electronic controller, the two power supplies and the four torque sensors are arranged, and when one power supply or one torque sensor breaks down, the other power supply or the other torque sensor can still work normally or in a degraded mode; the four-way torque sensor takes power from different power management chips, so that single-point failure and failure are avoided; in addition, the two microcontrollers are synchronized in real time, so that the real-time performance and uniformity of information obtained or generated by torque information, angle information, PWM information and the like are improved, and the working stability of the electronic controller is improved.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to an electronic controller for an electric power steering control system and a working method thereof. Background technique [0002] The electric power steering control system is one of the key technologies in intelligent driving technology. The electric power steering system directly relies on the motor to provide auxiliary torque. Compared with the traditional hydraulic power steering system, it reduces fuel consumption, increases steering followability, and improves operation. Stability, etc., are favored by the industry. [0003] As the brain of the electric power steering control system, the electronic controller is also the key technology of the electric power steering control system. However, the electronic controller in the current electric power steering control system mainly suffers from the fact that once a channel of external communication fails, or a channel of external powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00B62D101/00B62D119/00
CPCB62D5/0463B62D6/00
Inventor 董玉宬
Owner HELLA SHANGHAI ELECTRONICS
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