Control method of pulse width modulation, what does pulse width mean what is pulse width

1. The definition of pulse width is: the time that the high level lasts. Pulse-width is an abbreviation for pulse width. Pulse width has different meanings in different fields.

2. Electronic field: The maximum value that can be achieved by the pulse is called the "pulse width". Shape, amplitude and width are the main parameters of the pulse. The number of pulses per second that repeats periodically is called the "pulse frequency", and the reciprocal number is called the "pulse period".

3. Optical field: The flash duration of the pulsed light source refers to the peak value of 1 3, and the time interval corresponding to the light intensity is called the pulse width. It is mainly determined by the structure of the light source and the lighting circuit.

When used in small towns, the color rendering requirements are not high, and high-pressure sodium lamps or metal halide lamps can generally be used.

Pulse width: Usually refers to the period that lasts when the pulse reaches its maximum value in the field of electronics.

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Answer: The pulse can be adjusted like this: 1, and the DC and pulse transfer switch can be turned to the pulse. This switch is used to convert the output of the welding machine to DC or pulse, when this switch is in DC, the output of the welding machine is DC, and vice versa, and it must be placed in the DC state when manually welding. 2.

Base Current Adjustment Kno: This knob acts in a pulsed state. It is used to adjust the amount of arc current maintained during pulse welding.

3."Pulse Frequency" adjustment knob: This knob only works in the pulse state, and is used to adjust the number of times the pulse welding current occurs (fast or slow) The higher the pulse frequency, the denser the welding ripples, and vice versa, the thinner.

4.Pulse Width (Duty Cycle): This knob works only when it is pulsed.

It is used to adjust the duration of the pulse welding current, the wider the pulse width, the wider the weld seam is relatively wide and deeper, and vice versa, it is narrow and shallow.

Pulse modulation has two meanings. One refers to the process in which the parameters of the pulse itself (amplitude, width, phase) change with the signal. The amplitude of the pulse varies with the signal, which is called pulse amplitude modulation; The pulse phase changes with the signal, which is called pulse phase modulation; The same goes for pulse width modulation, double pulse interval modulation, pulse code modulation, etc.

Among them, pulse code modulation has the strongest anti-interference performance, so it is the most promising application in communication. The second refers to the process of modulating high-frequency oscillations with pulse signals.

Pulse width is defined as the amount of time a high level lasts.

Pulse-width is an abbreviation for pulse width. Pulse width has different meanings in different fields.

Electronic field: The maximum width that can be achieved by a pulse is called the pulse width. The shape, amplitude, and width of the pulse are the main parameters of the pulse. The number of pulses that repeat periodically per second is called the "pulse frequency", and the reciprocal number is called the "pulse period".

Light field: The duration of the flash of the pulse source is 1 3 of the peak, and the time interval corresponding to the light intensity is called the pulse width. It is mainly determined by the structure of the light source and the lighting circuit. In small towns, high-pressure sodium lamps or metal halide lamps can be used.

The pulse width is t.

Pulse width is referred to as pulse width (also commonly represented by symbols such as ON and TON), which is the duration of the voltage pulse applied to both ends of the discharge gap between the electrode and the workpiece. Period, the time that is high.

Frequency, which is the number of times a vibration is completed per unit of time, is a quantity that describes the frequency of reciprocating motion of a vibrating object, commonly represented by the symbol f or v, and the unit is seconds-1. The basic unit of frequency is the hertz, the symbol Hz, which represents a full cycle per second. Commonly used units are kilohertz (khz), megahertz (MHz) and gigahertz (GHz).

Pulse width refers to the time of t and is independent of frequency.

Period, the time that is high.

1.1. Pulse width definition: In different fields, pulse width has different meanings.

2.The usual pulse amplitude is the period during which the pulse reaches its maximum value in the electronic field.

Pulse Width&.

Interpretation in the academic literature.

8.The duration of the flash of a pulsed light source refers to the time interval corresponding to the 1 3 peak light intensity, which is called the pulse width.

9.It is mainly determined by the structure of the light source and the lighting circuit.

10.When used in small towns, the color rendering requirements are not high, and high-pressure sodium lamps or metal halide lamps can generally be used.

11.Pulse width refers to the length of time the solenoid valve is open.

12.This optimal activation state of the residue dispersion system is closely related not only to the slurry blending rate, but also to the operating conditions and the properties of the residue.

13.The maximum value that can be achieved by a pulse is called the "pulse width".

14.Shape, amplitude and width are the main parameters of the pulse.

15.The number of pulses per second that repeats periodically is called the "pulse frequency", and the reciprocal number is called the "pulse period".

16.Here, m is an arbitrary positive integer, and the length of each sub-interval (h=t m) is called the pulse width.

17.As an example, the case at m=4 is illustrated in Figure 1.

18.If the problem is in the interval ab), then the problem can be transformed to the equivalent problem in the interval t 0t) by transforming t=( a)t (b a).

20.Compared with ordinary analog signals (such as sine waves), the waveforms are discontinuous in the time axis (there is a clear separation between the waveforms and the waveforms) but have a certain periodicity.