PWM generator

Block appearance in REPEAT VISION

 The PWM generator block implements PWM modulation principle - the signal at the output of the unit is 1, when the value of the input signal is greater than the value of the carrier signal of PWM generator (see Fig. 1 below), otherwise - at the output of unit 0.

Fig. 1 PWM generator

 The block allows to specify three different types of carrier signal:

1. Direct saw - the signal is characterized by slow growth and sharp decline (see Fig. 2 below).

Fig. 2 Signal Direct saw

2. Reverse saw - the signal is characterized by vertical growth and slow decline (see Fig. 3 below).

Fig. 3 Signal Reverse saw

3. Triangular - the signal is characterized by slow growth and slow decline (see Fig. 4 below).

Fig. 4 Signal Triangular

 Value \(f\) – specified frequency of carrier signal, [Hz].

 The pulse delay allows to change the initial value of PWM generator carrier signal - “shift” the signal to the left for specified time.

1.  Properties

Property	Default Value	Description	Units of measurement
Carrier signal frequency	1000.0	-	Hz
PWM delay	0.0	-	s
Tooth height	1.0	Maximum value	-
Minimum value	0.0	-	-
Carrier signal type: Up counter; Down counter; Up-down counter	Up counter	-	-

2.  Inputs and outputs

Parameters	Input/Output	Description	Units of measurement	Port type
Input signal	Input	-	-	Automation
Output signal	Output	-	-	Automation

In order to see the connection capabilities of the block, you need to go to page Description of block ports

3.  Code generation

Important

Block supports C source code generation