Unlock instant, AI-driven research and patent intelligence for your innovation.

FPGA-based fuel system stepping motor fault monitoring method

A stepping motor and fault monitoring technology, which is applied in the direction of motor generator testing, combustion engine, internal combustion piston engine, etc., can solve the problems of difficult real-time fault detection, difficult to implement, and large resource occupation, so as to avoid adverse effects and reduce detection time. Short, low false alarm rate effect

Active Publication Date: 2021-04-23
中国航发控制系统研究所
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the stepper motor of the CNC system is in a high-speed operation state, the working time of each phase of the motor is only 2ms, and it is difficult to detect real-time faults. Using CPU for real-time detection not only takes up huge resources, but also is difficult to implement.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • FPGA-based fuel system stepping motor fault monitoring method
  • FPGA-based fuel system stepping motor fault monitoring method
  • FPGA-based fuel system stepping motor fault monitoring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] Such as Figure 1 to Figure 5 as shown,

[0030] FPGA implements stepper motor drive output and BIT state acquisition functions, such as figure 1 shown. The stepper motor adopts the four-phase eight-beat constant current control method, and the upper and lower tubes are used for each phase control. The upper tube is constant current chopping, and the lower tube is controlled by phase sequence. The hardware BIT detection is mainly for the detection of key component failure modes. This program is designed with disconnection detection, online detection and overcurrent detection.

[0031] When the stepper motor is working online, the FPGA controls the switch tube S1 to be turned on, and the current flows through the sampling resistor R4. Both the online detection threshold U1 and the overcurrent detection threshold U2 have voltages. Compared with the designed reference value, they are higher than the reference value. value, it is judged that the stepper motor is in the s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an FPGA-based fuel system stepping motor fault monitoring method, which comprises the following steps: a CPU is connected with an FPGA, the FPGA is connected with a four-phase eight-beat stepping motor, four phases of the stepping motor are respectively set as A, B, C and D phases in sequence, a switching tube S1 in the FPGA connects a sampling resistor R4 and the stepping motor in series, and the sampling resistor R4 and the stepping motor are connected in parallel; the FPGA controls the stepping motor to rotate and collects stepping motor state information and sampling resistor R4 voltage information once every 2 ms, 6 frames of data are sent every 6 ms, each frame of data comprises a timestamp, A item output information, B item output information, C item output information, D item output information, AC online information, BD online information, AC overcurrent information and BD overcurrent information, and the CPU obtains and calculates the 6 frames of data sent by the FPGA every 6 ms. Whether the motor is broken or over-current is analyzed. By the adoption of the technical scheme, online faults of the stepping motor can be effectively detected, reliability is high, the false alarm rate is low, and transportability is good.

Description

technical field [0001] The invention relates to an online real-time fault diagnosis technology of a stepping motor based on FPGA and software judgment, and belongs to the technical field of fault diagnosis. Background technique [0002] In the digital electronic control system of aero-engines, using stepper motors to control fuel actuators has become a future development trend. The fault diagnosis of the stepper motor has also become a high safety requirement for the fuel control system of the aero-engine. [0003] Since the stepper motor of the CNC system is in a high-speed operation state, the working time of each phase of the motor is only 2ms, so it is difficult to detect real-time faults. Using CPU for real-time detection not only takes up huge resources, but is also difficult to implement. Contents of the invention [0004] Purpose of the invention: Based on the problems in the background technology, the present invention provides an FPGA-based stepping motor fault ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
CPCY02T10/40
Inventor 邢林郭潇晟李志鹏李辉杨云强
Owner 中国航发控制系统研究所