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The circular vibration is about 45 hertz or so, but if it is increased, it will cause its vibration frequency to drop.
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Is the large degree of fairness an increase in vibration around 45 words? I don't think I know if that's what that means.
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My horizontal vibration is at 45 Hz, and I suggest you still ask the pros to know a little bit more about this kind of thing.
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It shouldn't matter if the horizontal well road is about 40, and it doesn't matter if you increase it, sister, she can.
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If the left and right vibrations increase, it should be difficult to add, you can check it on the Internet.
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No matter is an absolute rigid body, and any object can be deformed, so any matter can vibrate.
The main reason is that the molecules are connected together by gravity, and there are gaps in between.
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"Vocalize" here means "make a sound that we can hear", right? So how many hertz can "sound" actually depends on the range of human hearing, and the ability to penetrate an object is related to the intensity of the sound wave and the absorption coefficient of the object.
I just tried it, but I don't need to vibrate, I can hear the sound with a quick shake of my hand. It is a truth that there is a sound with a dancing stick.
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Horizontal, its vibration is big, I think it's a good word in 45, his things can really be increased, and in this way, you can also choose according to yourself.
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The flat vibration is large in the four or five congratulatory messages, the vibration increases, the capacity of this belt is not the same, or the position of the delay is different, which may be related to the size of the female vibration.
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25mm s is too big, the watt temperature is normal, I don't know what the motor is, check the manual to see if it is in the vibration zone at that time, and try to avoid it by adjusting the frequency.
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The horizontal vibration is large, and the vibration is increased at about 45 Hz.
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The horizontal vibration is relatively large, and in this case, the vibration superposition is getting larger and larger at about 45 Hz.
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Is the horizontal vibration large or the vibration increased around 45 Hz? This must be within this range to be vibrated in order to be increased.
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Vibration frequency refers to the rate at which mechanical parts oscillate, and the higher the vibration frequency, the faster the oscillation.
The frequency of the vibration can be determined by counting the number of oscillation cycles of the vibrating part in each second. For example, if a component goes through 5 vibration cycles per second, it means that the vibration frequency per second is 5 time cycles.
The comparative method of measuring the vibration frequency is to compare the known frequency of the same kind with the frequency of the unknown quantity to be measured, so as to determine the magnitude of the measured frequency. There are several commonly used methods:
1 Comparative recording method.
The recording comparison method converts the measured mechanical vibration into an electrical signal through the sensor, which is connected to the recording instrument after appropriate amplification, and the vibration waveform is recorded on the recording paper engraved with the standard time scale and the amplitude size, and then the vibration frequency is determined by the number of waveforms recorded in a certain time scale. This method is more common in engineering surveys.
2 Flash frequency measurement.
Flash frequency measurement is the use of a flash meter to measure frequency. The flash meter consists mainly of an electrical pulse generator with adjustable frequency and a flash lamp.
If the flash frequency is exactly the same as the vibration frequency of the object, when the object is illuminated every time, the vibrating object vibrates to the same position, and it looks as if the object does not vibrate, then the flash frequency read from the flash meter is the vibration frequency of the vibrating object.
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The vibration frequency f is the number of vibration cycles of an object per second, and the SI unit is hertz [Hz]. Frequency is a sign of vibration characteristics and an important basis for analyzing the causes of vibration.
According to the law of vibration, mechanical vibration is generally divided into two types: deterministic and random. The first classification is mainly based on the characteristics of vibrations over time. The types of vibration in most mechanical equipment are periodic, quasi-periodic, narrow-band and broadband random, as well as a combination of certain types of vibration.
Generally, the vibration signal in the process of starting or stopping is non-stationary. In the actual operation of the equipment, the periodic signal of its performance is often drowned in the random vibration signal. If the degree of equipment failure is aggravated, the periodic component of the random vibration will be strengthened, and the vibration of the whole equipment will increase.
Therefore, in a sense, the process of diagnosing the vibration of equipment is the process of extracting periodic components from random signals.
The root cause of the vibration of the machine lies in the excitation of one or several forces. Different types of vibrations are provoked by forces of different natures. According to this, mechanical vibrations can be classified into three types:
1) Free vibration.
After giving a certain amount of energy to the system, the vibration generated by the system. If the system is not damped, the system maintains equal amplitude vibration; If the system is damped, the system is attenuated vibration.
2) Forced vibration.
The vibration of an element or system is caused by the action of an external force that changes periodically, such as imbalance and misalignment.
3) Self-excited vibration.
In the absence of external force, it is only caused by the excitation generated by the system itself, such as oil film oscillation, surge, etc.
The vibration caused by mechanical failure is mostly forced vibration and self-excited vibration.
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The vibration frequency of the sound that can be felt by the normal human ear is between 20Hz and 20000Hz, but in reality it is not necessarily audible even in this frequency range.
On the other hand, the human ear has limited resolution and sensitivity to sound intensity, so the sound intensity of vibration also varies from person to person.
There are three common conditions that cause changes in the intensity and frequency of sound.
1. In the process of sound wave propagation, its energy will be continuously absorbed and converted into other forms of energy, and its sound intensity and frequency will change.
2. Diffusion will also cause the energy flow density of the sound wave to decrease with the change of propagation distance, causing changes in sound intensity and frequency.
3. Interference between different sound waves.
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Yes, the pitch of a note is reflected by its vibrational frequency. The higher the vibration frequency, the higher the pitch.
Different instruments vibrate in different ways, for example, when a percussive instrument makes a sound, its strings vibrate, then the number of vibrations per second is the frequency at which it vibrates. So the frequency of the international standard note A is 440 Hz, which means that when you play this A note on the piano, the string vibrates 440 times per second. The frequencies of two notes separated by octaves are always doubled, so the frequency of the lowest note of the piano is Hertz, which is only 55 vibrations every two seconds.
When the vibration frequency is low to a certain level or high to a certain level, the human ear will not be able to hear. For example, frequencies higher than 20,000 Hz are called ultrasound, and those below 20 Hz are called infrasound. Ultrasound and infrasound are inaudible to the human ear.
However, this doesn't mean that you really can't hear anything, because there are also overtones. For example, if you use the principle of piano strings to make a string with a frequency of less than 20 Hz, you can still hear its overtones after striking, for example, if the frequency of that string is 15 Hz, you can hear the overtone with a frequency of 30 Hz (its first overtone), which is higher than the lowest note of the piano.
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The International Standard Tone refers to the A sound of a group of small characters. The A sound is the name given to a sound of fixed height, and is marked with C, D, E, F, G, A, B (or its lowercase) in **.
The standard note a in the pitch of the ages:
1.High Renaissance: 460Hz2
Baroque: 415hz3**Pitch First International Pitch (concert):
440Hz has a unified pitch standard in the world, which facilitates theoretical research, musical instrument production and cultural exchange. The C note, which vibrates about 261 times per second, is called **C in the music system, and it is at the top of the basic scale.
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Right. A tone with a frequency of 220 Hz is an octave lower than the standard tone; A tone with a vibration frequency of 880 Hz is an octave above the standard pitch.
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Yes. The international standard tone is a pitch with a vibration frequency of 440 Hz. The pitch of the tone is determined by the frequency.
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