fault diagnosis

Key Learning Points for Electrician Technician Examination: PLC Controllers, Ohm’s Law and Electrical Power, Low Voltage Components

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Key Learning Points for Electrician Technician Examination: PLC Controllers, Ohm's Law and Electrical Power, Low Voltage Components

For the level 2/technician examination in “Electrician”, the key learning points for PLC controllers can be focused on the following key areas: 1. Basic Principles and Structure of PLC Working Principle: Understand the cyclic scanning operation of PLC, including input sampling, program execution, and output refreshing stages, and comprehend how it achieves control over industrial … Read more

Improved Multiple Synchronous Squeezing Transform (Matlab Implementation)

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Improved Multiple Synchronous Squeezing Transform (Matlab Implementation)

TRAVEL Click the blue text to follow us Overview The time-frequency representation generated by traditional methods is often too vague to provide precise features for such signals. A recently proposed method called the Multiple Synchronous Squeezing Transform (MSST) overcomes most of the issues present in traditional methods and appears to be a promising tool. However, … Read more

Comprehensive Guide to Mitsubishi PLC Fault Diagnosis and Maintenance: From LED Blinking to Program Errors

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Comprehensive Guide to Mitsubishi PLC Fault Diagnosis and Maintenance: From LED Blinking to Program Errors

1. Fault Diagnosis Methodology 1. Three-Level Troubleshooting Method A [Hardware Layer] -> B [Software Layer] -> C [System Layer] Hardware Layer: Check power supply, IO modules, wiring Software Layer: Monitor program logic, register values System Layer: Diagnose communication protocols, parameter settings 2. Diagnostic Toolset Tool Function Operation Path LED Indicator Quickly locate module faults Check … Read more

Common Faults of Temperature Sensors and Their Solutions

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Common Faults of Temperature Sensors and Their Solutions

Currently, temperature sensors are increasingly used in various fields, and it is inevitable that problems will arise during their use. Generally speaking, faults in temperature sensors are rare, and these issues can be avoided with careful inspection during manufacturing. Therefore, it is essential to conduct tests before the temperature sensors leave the factory, and customers … Read more

Detailed Explanation of CAN Bus Normal Voltage: Understand Quickly with Diagrams for Rapid Fault Location

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For friends engaged in automotive electronics or related fields, the ability to quickly assess the operational status of the CAN bus is a very practical skill. Today, we will delve into the normal voltage range of the CAN bus and how to conduct basic fault diagnosis through voltage measurements. 1. Normal Voltage Range of the … Read more

Filling the Gap! The First Multi-Sensor PMSM Fault Diagnosis Open Dataset is Now Online

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Filling the Gap! The First Multi-Sensor PMSM Fault Diagnosis Open Dataset is Now Online

Filling the Gap! The First Multi-Sensor PMSM Fault Diagnosis Open Dataset is Now Online| |The open dataset aids in publication 1. Introduction This article introduces a new, comprehensive dataset for Fault Detection and Diagnosis (FDD) in inverter-driven Permanent Magnet Synchronous Motor (PMSM) systems. Despite the increasing importance of AI-driven FDD technologies, there is still a … Read more

DTC P154A-F1: Internal Fault Diagnosis of Battery Sensor (DH3)

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DTC P154A-F1: Internal Fault Diagnosis of Battery Sensor (DH3)

1. Identification Customer feedback: The vehicle’s dashboard light is illuminated, and HDS checks show a fault code, as shown in the image.2. Analysis2.1. Fault Description: When a fault is detected, the 12V charging system warning light and alarm are illuminated, and the DTC and freeze frame data are stored in the VCU memory. The VCU … Read more

Fan Submission: Defining Terminal Connections for Electric Motor Controllers

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Fan Submission: Defining Terminal Connections for Electric Motor Controllers

Working Principle and Function Introduction The controller, as a key power component in electric vehicles, interacts with the vehicle through the CAN network to exchange commands and status information. The controller collects motor current, speed, and position signals, integrates system status and vehicle control commands, and converts the DC power from the vehicle’s high-voltage distribution … Read more

Physics-Guided Neural Networks Empowering Sensors in Aircraft Engines

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Physics-Guided Neural Networks Empowering Sensors in Aircraft Engines

In the aviation field, aircraft engines are considered the “heart” of the aircraft, and their performance directly affects flight safety and efficiency. Sensors, acting as the “nervous system” of the engine, are responsible for real-time monitoring of key parameters, providing critical data support for the stable operation and precise control of the engine. However, the … Read more