• The repetition period of the PWM pulse for servo control is 20 ms. • The pulse width is between 1.0 to 2.0 ms, with 1.5 ms setting the servos to the center. • We need a resolution of no less than 1 us (micro second) for the pulse width change. • The timer used for the PWM generation has a 16-bit prescaler and a 16-bit counter. • The clock to the prescaler is 10 MHz. Determine the following (which may not be unique): 1. The range of PSC that satisfies the requirements for resolution and period of the pulses.
• The repetition period of the PWM pulse for servo control is 20 ms. • The pulse width is between 1.0 to 2.0 ms, with 1.5 ms setting the servos to the center. • We need a resolution of no less than 1 us (micro second) for the pulse width change. • The timer used for the PWM generation has a 16-bit prescaler and a 16-bit counter. • The clock to the prescaler is 10 MHz. Determine the following (which may not be unique): 1. The range of PSC that satisfies the requirements for resolution and period of the pulses.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
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Author:James Kurose, Keith Ross
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Chapter1: Computer Networks And The Internet
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Transcribed Image Text:• The repetition period of the PWM pulse for servo control is 20 ms.
The pulse width is between 1.0 to 2.0 ms, with 1.5 ms setting the servos to the center.
• We need a resolution of no less than 1 us (micro second) for the pulse width change.
• The timer used for the PWM generation has a 16-bit prescaler and a 16-bit counter.
• The clock to the prescaler is 10 MHz.
Determine the following (which may not be unique):
1. The range of PSC that satisfies the requirements for resolution and period of the pulses.
2. The value of PSC that can provide us with a PWM resolution, the multiple of which will be 1
us.
3. The PWM resolution for the above choice of PSC.
4. The value of ARR. for the above choice of PSC?
5. The values of CCR when we want the widths of the pulse being 1.0, 1.5, and 2.0 ms.
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