Application of Digital Multimeter in Aviation Maintenance
Aviation maintenance refers to all measures and activities taken to maintain, restore or improve an aircraft to its specified condition. It usually includes maintenance and repair, which is the prerequisite and necessary condition for the use of the aircraft.
The electrical and electronic system of an aircraft is equivalent to the brain, eyes, nerves, etc. of the aircraft. Once a failure occurs, the specified tasks may not be completed at least, and the aircraft may be destroyed or killed. With the development of electronic technology, in order to reduce fuel consumption, reduce maintenance costs and reduce environmental pollution, airlines have created multi-electric/all-electric aircraft. Multi-electric/all-electric aircraft uses electricity as the main secondary energy source of the aircraft, gradually or completely replacing the hydraulic energy and gas energy in the aircraft system. Currently, typical multi-electric aircraft include B787, A380, etc. The development of multi-electric/all-electric aircraft has greatly increased the proportion of aircraft electrical and electronic systems, and at the same time, the probability of failure of electronic circuits or electronic equipment has also increased accordingly. airplane
Electrical and electronic systems, with the increase of working hours and the influence of external factors, such as vibration, temperature, humidity, oil, dust, etc., the performance of its components will change, and the contact parts may have poor contact, and even the circuit may be open or short circuited Wait for failure. Potential failures of circuits and changes in the performance of electronic components must be discovered and mastered through circuit measurements. [1-4] The digital multimeter is one of the most commonly used measuring instruments in aircraft electrical and electronic maintenance.
