Vibration monitoring is very important in the field of aircraft, and almost all types of aircraft require vibration monitoring to ensure the safety and reliability of their structures. The following are some common types of aircraft that require vibration monitoring:
1. Aircraft: Aircraft are affected by various external airflow and engine vibrations during flight. Vibration monitoring can help evaluate the strength and stability of aircraft structures, ensuring flight safety.
2. Helicopter: The rotor system of a helicopter can cause significant vibrations, and vibration monitoring can help detect the vibration of the rotor system to ensure the flight stability of the helicopter.
3. Drones: Drones typically require long-term flight missions, and vibration monitoring can help evaluate the fatigue life of drone structures, ensuring their long-term flight safety.
4. Satellites: Satellites are also affected by vibrations during launch and operation, and vibration monitoring can help evaluate the stability of satellite structures,
Aircraft vibration state detection refers to the real-time monitoring and recording of the vibration situation of the aircraft during flight through vibration sensors installed on the aircraft, in order to evaluate the structural strength and stability of the aircraft, and ensure the safety and reliability of the aircraft. The following are some common methods for detecting the vibration status of aircraft:
1. Vibration spectrum analysis: By analyzing the vibration signal spectrum, the vibration situation of the aircraft at different frequencies can be obtained, thereby understanding the frequency distribution of the vibration force on the aircraft.
2. Vibration amplitude monitoring: By monitoring the vibration amplitude of the aircraft at different time points, the magnitude of the vibration force experienced by the aircraft can be understood, and abnormal vibration situations can be detected in a timely manner.
3. Vibration modal analysis: By conducting modal analysis on vibration signals, the vibration mode of the aircraft can be obtained, and the vibration characteristics and structural dynamic performance of the aircraft can be understood.
4. Vibration response test: By applying external excitation to the aircraft and observing its vibration response, the structural strength and dynamic response performance of the aircraft can be evaluated.
Through the above methods, engineers can comprehensively understand the vibration status of aircraft, timely identify and solve potential vibration problems, and ensure the safety and reliability of aircraft.
(1、Internally shielded IEPE accelerometer 577A, this vibration sensor is a lightweight IEPE accelerometer that can simultaneously measure vibration and impact. Its characteristic is the use of ceramic crystals in a circular shear mode as sensitive elements, which has the characteristic of maintaining stable output for a long time; Widely used in vibration and impact testing of rotating equipment; Especially suitable for applications in complex electromagnetic environments such as engines or transmission health monitoring systems (HUMS). In the application of the HUMS system, it has corresponding application characteristics: • ultra-high frequency response • shell isolation • through-hole installation • flexible outlet direction • adhesive or screw installation • circular shear mode • wide operating temperature range
(2. Isolation type charge output acceleration sensor 511PM1 has been developed by the customer. This sensor is an internal isolation type piezoelectric acceleration sensor designed specifically for impact measurement. The sensor has a charge output signal and good sealing performance. The signal ground is insulated from the shell, and the installation surface has low noise, making it very suitable for use in harsh environments. This product is a collision/impact testing specific sensor.
（3、The high-temperature three-axis acceleration sensor 531P is suitable for working environments under working temperature conditions of -70 to+260 ° C;
（4、The 372P-50 high-temperature vibration sensor is a piezoelectric charge output acceleration sensor that can withstand high temperatures from -55 to+482 ° C. It is suitable for vibration monitoring and feedback in high-temperature environments such as engines and exhaust pipes. The product features:·Triangle installation design, screw or screw installation, metal welding sealing, shell isolation, broadband response; This product is mainly used for: high-temperature vibration monitoring, engine testing, flight research, modal analysis, exhaust system testing; Senther Technology also provides high-temperature charge amplifier IN-17, 650 degree high-temperature cable, and matching 17P
730A miniature three-axis IEPE accelerometer: The 730A series product is an IEPE three-axis miniature accelerometer, which uses piezoelectric ceramics operating in shear mode as sensitive components and has ultra wide frequency response characteristics.This IEPE accelerometer generates signals by combining high-quality crystals and low-noise microelectronic components, achieving ultra-low temperature sensitivity changes/responses within the operating temperature range compared to other sensitive components; The shear mode technology ensures excellent base sensitivity and strain error.The 730A series products adopt a laser welded titanium alloy metal shell and a glass sealed 4-pin lightweight joint structure (or full line output) for lightweight and broadband applications.The excellent amplitude and phase frequency response make this product very suitable for structural verification, component testing, drop testing, and laboratory hydraulic dynamics testing. The micro cube structure allows testing engineers to conveniently measure the acceleration of three mutually perpendicular axes synchronously, with reliable and long-term stability of the test data.
