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A multi-channel electric steering gear control method

A technology of electric steering gear and control method, applied in multiple motor speed/torque control, multiple motor speed adjustment, computer control and other directions, can solve the problem of difficult FPGA development, long verification period, complex information interaction and interface processing and other problems, to achieve the effect of strong applicability and isolation function, effective miniaturization requirements, and reliable and stable on-chip resources

Active Publication Date: 2020-04-07
XIAN FLIGHT SELF CONTROL INST OF AVIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The control method of multiple microcontrollers is that each microcontroller controls an electric steering gear, but the information interaction and interface processing between multiple microcontrollers are often too complicated
In addition, the combination of microcontroller and PFGA requires FPGA to complete complex multi-channel motor control algorithms, especially for permanent magnet synchronous motors and other complex motor control algorithms, resulting in difficult FPGA development and long verification cycles.

Method used

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  • A multi-channel electric steering gear control method
  • A multi-channel electric steering gear control method
  • A multi-channel electric steering gear control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A control method of a four-channel electric steering gear based on a brushless DC motor is realized. The position feedback of the electric steering gear is DC feedback, and the analog command of the steering gear comes from the analog command given by the signal generator. The motor is a DC brushless motor, and the position feedback of the motor is a three-phase signal of Hall_A, HALL_B, and HALL_C. The realization scheme of this method chooses MPC5644A signal of FREESCALE Company as the main microcontroller, and chooses MC56F84789 of FREESCALE Company from the microcontroller.

[0060] The main microcontroller MPC5644A uses the AN_0 channel of its on-chip 12-bit enhanced EQADC converter to collect the servo 1 position feedback, the AN_1 channel to collect the servo 2 position feedback, the AN_2 channel to collect the servo 3 position feedback, and the AN_3 channel to collect the servo 4 position Feedback, the AN_4 channel collects analog instructions; implements the c...

Embodiment 2

[0065] A control method of a four-channel electric steering gear based on a permanent magnet synchronous motor is realized. The position feedback of the electric steering gear is AC feedback, which can be converted into a DC signal by designing a second-order filter current. The analog command of the steering gear comes from the digital command given by the RS485 bus. The motor is a permanent magnet synchronous motor, and the feedback of the motor is a resolver sine and cosine signal. The realization scheme of this method chooses MPC5644A signal of FREESCALE Company as the main microcontroller, and chooses MC56F84789 of FREESCALE Company from the microcontroller.

[0066] The main microcontroller MPC5644A uses the AN_0 channel of its on-chip 12-bit enhanced EQADC converter to collect the servo 1 position feedback, the AN_1 channel to collect the servo 2 position feedback, the AN_2 channel to collect the servo 3 position feedback, and the AN_3 channel to collect the servo 4 pos...

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Abstract

The invention relates to a multi-channel electric steering engine control method, and belongs to the electric steering engine control field; the control framework design method is applied to multi-channel electric steering engine control; a main microcontroller circuit, a plurality of slave microcontroller circuits and a main-slave microcontroller communication circuit are provided; the main microcontroller can control a multi-channel electric steering engine position ring, and outputs speed ring orders of each steering engine; the slave-microcontroller can control each channel motor speed ring and a current ring in the electric steering engine; the main and slave microcontrollers can communicate through on-chip bus communication interfaces. The method can realize high-low matching and model selection for the main-slave microcontrollers according to application occasions; the method also can layer the position ring, speed rings and current rings, thus ensuring the main microcontrollermulti-channel position loop control and the slave-microcontroller motor control not to mutually affect each other, and providing strong applicability for the whole framework; the main-slave microcontrollers respectively use on-chip resources in the maximum level, so the system is low in cost and miniature.

Description

technical field [0001] The invention relates to a multi-channel electric steering gear control method, which belongs to the field of electric steering gear control, and is a multi-channel motor control technology based on multi-micro-controllers. Background technique [0002] Due to the widespread application of distributed control systems in aircraft, power-by-wire actuation systems have received more and more attention. Compared with the hydraulic actuation system, the power-by-wire actuation system has the advantages of improving the power efficiency of the entire aircraft, not requiring a hydraulic source, and reducing the weight of the aircraft. At the same time, since the aircraft contains multiple rudder surfaces, the control technology for multi-channel electric steering gear has become a key research direction. The traditional multi-channel electric steering gear control is generally realized by multi-microcontroller control, or a combination of microcontrollers an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042H02P5/56H02P6/04
CPCG05B19/0421G05B2219/2231H02P5/56H02P6/04
Inventor 任少盟刘泓阳韩志华熊天毅
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC
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