Question
Problem 1: (20 Points) The following questions are relevant to the PWM/H-bridge motion control of DC motors you learned in Labs 2 and 3. (1a)
Problem 1: (20 Points) The following questions are relevant to the PWM/H-bridge motion control of DC motors you learned in Labs 2 and 3.
(1a) Describe what the H-bridge is, and how does it work to change the rotational direction of a DC motor. (4%)
(1b) Describe how to use a pair PWM signals together with an H-bridge to control the speed and direction of a DC motor, and explain in details how the PWM/H-bridge combination works. (8%)
(1c) Why the PWM/H-bridge approach is better than the traditional old approach? (Without the H-bridge, it would require two sets of power soureces: one to provide positive voltage and the other for negative voltage in order to change the rotation direction of DC motor. To control the speed of motor, it would need to vary the magnitude of the voltage applied to the motor.) (8%)
Actual question below:
Problem 1: (20 Points) The following questions are relevant to the PWM/H-bridge motion control of DC motors you learned in Labs 2 and 3. (la) Describe what the H-bridge is, and how does it work to change the rotational direction of a DC motor. (4%) (1b) Describe how to use a pair PWM signals together with an H-bridge to control the speed and direction of a DC motor, and explain in details how the PWM/H-bridge combination works. (8%) (1c) Why the PWM/H-bridge approach is better than the traditional old approach? (Without the H-bridge, it would require two sets of power soureces: one to provide positive voltage and the other for negative voltage in order to change the rotation direction of DC motor. To control the speed of motor, it would need to vary the magnitude of the voltage applied to the motor.) (8%)Step by Step Solution
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