koolslash
Junior Member level 3
dc motor fpga
If anybody can tell me how to measure the speed or rpm of a DC MOTOR. if i m giveing the digital PID controller output to PWM and then driving DC MOTOR TO CONTROL SPEED.now i am stuck at giving back the feedback to the controller.
i have few ideas:
:idea:1. use LDR and LED circuit to measure pulses generated at diffent frequecy and use freq to Volt converter and give it to ADC which will give me a digital output for PID controller.
:idea:2. use R & C accross the DC MOTOR to calculate frequecy and follow the same procedure...
NEED YOUR HELP!!!! ASAP
If anybody can tell me how to measure the speed or rpm of a DC MOTOR. if i m giveing the digital PID controller output to PWM and then driving DC MOTOR TO CONTROL SPEED.now i am stuck at giving back the feedback to the controller.
i have few ideas:
:idea:1. use LDR and LED circuit to measure pulses generated at diffent frequecy and use freq to Volt converter and give it to ADC which will give me a digital output for PID controller.
:idea:2. use R & C accross the DC MOTOR to calculate frequecy and follow the same procedure...
NEED YOUR HELP!!!! ASAP