진동(vibration)을 인체의 건강상태를 진단하는 기술로서 예를들면 청진기나 심전도검사 등을 이용한다고 할 수 있고 쉽게 그 차이점을 비교하듯이 윤활유 분석기술(lubrication analysis)은 마치 사람의 혈액검사와 비유할 수 있다. 그러나 사람의 문제는 회전하는 기계처럼 원심력에 의해 발생하는 가진력으로 하여금 ...
설비 상태모니터링이나 정밀 설비진단을 수행할 때 계측기와 센서보다 반드시 먼저 가지고 있어야 할 것이 있다.첫 번째 확인해야 할 준비사항은 ‘설비의 도면과 제원 그리고 설비이력서’이다. 설비의 상태를 파악하기에 앞서 기계가 가지고 있는 특성, 고장이력, 회전수, 결함주파수(Fault frequency)를 확인할 수 있는 ...
BISOPE series
100- Vibration-Noise Resonance Highlights 407-visope (Active Noise,
Impact Vibration, Degree of Freedom, Acceleration Sensor)----------------------------------------------------
Active Vibration & Noise Control
Waves
possess energy. The algorithm for active control is as follows. Energy,
expressed as amplitude, flows over time, indicated by positive and negative
values. When a positive value and a negative value meet at the same time, they
form a wave and are equal to zero. Noise and vibration are also waves. https://contents.premium.naver.com/bisope/visope/contents/250219074909877vg
Shock and Vibration
The
role of each element in this shock-vibration damping mechanism is explained and
related common sense and knowledge are summarized as follows: 1. The sash
spring is installed between the vehicle body and the wheels and converts the
shock from the road surface and wheels into vibration. 2. Among the springs in
the chassis, coil springs handle vertical movement, while torsion bars handle
left-right torsional vibration. https://contents.premium.naver.com/bisope/visope/contents/250226080220187du
Move Your Neck Freely!
It's
undeniable that engineering exists to design, calculate, and predict the
movement of objects. First, the definition of "degrees of
freedom"—the coordinate system that expresses the movement of an object.
While the probability of this movement following these coordinates isn't
extremely high, it can at least be expressed using these coordinates. Now,
let's move our necks freely, thinking like an engineer. https://contents.premium.naver.com/bisope/visope/contents/250228081352553mz
Accelerometers are most commonly used for vibration measurement.
Accelerometers
aren't always required to measure vibration. Displacement sensors and velocity
sensors are also available. These sensors are so named because of the units of
amplitude they output (displacement-velocity-acceleration), but the amplitude
output must be expressed in terms of force, energy, or stress. https://contents.premium.naver.com/bisope/visope/contents/250227073528116aq
