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rpm rpm , rpm measurement , rpm tachometer , function rpm
140 Threads found on Rpm Speed
I am currently working in the project which fetches OBD (On Board Diagnostic) information from the cars. Well, I could read rpm, speed and other data and ensured that the communication is happening in proper way But the problem is, I couldn't find any PID for fetching the odometer reading...Since it is one of the important parameter for our proje
For the low rpm you need, a stepper motor could work, i am thinking NEMA 17. You would have to program a micro to run the motor, or buy a stepper motor drive.
hello What rpm speed ? or pulses per second ? You don't use debounce of RX detection ? so you can get bad detections RX must stay enough time to 1 , to valid this information maybe recheck after a litle delay of any ?Sec... if Rx==0 you spend a lot of time with all instructions to do ! so you can miss some information Best way is to
Motor torque and rpm need to match, the work being done for proper sizing. Weight, acceleration, speed. Stall current will be your starting current and this will drop to idle current at full speed if there is no friction, otherwise higher. Once you choose motor power and time duration, energy required between charging, you can choose (...)
Hi I can run the 6V 2A Stepper motor with the help of L298N driver.But how to increase and decrease the rpm of motor with the help of PWM without changing delay.And is the L298 driver is protect-able or not? Thanks and Regards, M SAI KIRAN.
for a gear ratio of 1:8 , with o/p speed limited to 200rpm , the input speed will be 25 rpm. also , if the motor torque is 0.8Nm(holding) , will it not reduce the torque in the o/p for 1:8 ratio gearbox?
I used a triac in my homebrew fan speed control. The fan was a 'squirrel cage' type (mounted on a wood stove). The type is important. As I understand it, most fans cannot be speed-controlled by a triac, with their rpm dependent on the frequency of the AC supply. If you simply limit power (as with a triac), the normal fan tries to spin at (...)
I once made an rpm meter. I remember counting the pulses within a given time period, like half a second was much easier and yield higher resolution than measuring the time between pulses. On the other hand counting the pulses in a given period gives you a much smaller refresh rate than measuring the time between pulses. Those are my two cents.
I got a BLDC motor from an old HDD (it has no Hall sensor). I made a driver circuit with an Atmega-8, one ULN2003, six opto-couplers and six IRF610 MOSFETS. Wrote the following C code to send sequential pulses to the gates and the motor is running freely without any kind of feedback at a relatively low speed (my idea is 4 to 5 rotation/sec). speed
emergency landing of the quadrotor in case of a failure of a propeller. You'll want the craft to descend slowly. To ensure this you either need to (a) install an altimeter, or (b) spin the propellers at an rpm which you determined (by previous experiments) is the proper speed so that 3 propellers will reduce altitude
hello, the only way is to know the linear speed of the rotor (on his circonference) VL= PI * Dia * N so Dia= VL / (PI * N) N=rpm VL in Meter per Minute Dia in Meter it is an unusual request ? How do you can have an accees of the rotor circonference inside the stator ? what is for ?
THe current for Fans starts at a fairly constant current and then rises slowly to perhaps double the current from 12 to 24V as more work is done pushing air. Typical 4" muffin fans take about 5W and you would get perhaps 20% of the rpm at 12V. Adding resistors would only reduce the fan speed and dissipate more power in the series R's and be ineff
The missing info is your wind generator power vs air speed and stall threshold. Then compute time to charge up 4Wh. (1Ah*4V~) vs wind speed. Unless rpm is regulated separately from boost DC-DC regulator for optimum power transfer , expect far less than rated power. Better to use higher voltage gen and Buck current booster with MPPT control (...)
I am using a pic16f877a, an EM-506 GPS module, and a 16x2 LCD to display the speed Over Ground and using Timer 0 as the timer and Timer 1 as a counter to display rpm's. I can get the rpm's and speed to display individually but not at the same time. For the tachometer, I set the pre-scalar to 0x07 to create the longest delay (...)
Hi All, I would like to control washing machine AC motor to have speed of 80 rpm. I know it sounds weird but this is just a part of the project. I was thinking to use the same concept of DC motors to control the speed of AC motors. the easiest thing was to use PWM technique. I would use 220V source and the circuit should look like (...)
Is adapted rpm code what you really want? The rpm code is originally to count the number of times the IR beam is broken within a fixed time period so it can calculate the speed of the fan. In your application it seems all you need to do is count the number of times the beam is broken and keep incrementing the number until you reset it. Am I (...)
can you plz explain the flow of this code? module(clk,mpulse,speed); input clk,mpulse; outputspeed; wire speed; regcval, tcount, quot,rem; reg zero,sts; wire rfd; assign speed = (zero?16'd0:quot); always@(posedge clk) begin if(!mpulse && sts) begin tcount = cval; sts = 1'b0; cval = 32'd0;
i m having a permenent magnet dc motor that runs at 1000rpm speed at 12v rating, it is possible to control speed in the range to 10-50 rpm using pot. please suggest some circuits regards kalyan
if using a microcontroller such as a PIC24 you can connect the hall sensor to an interrupt on change input you then count the interrupts over a period of time (using a timer interrupt) and calculate the rpm
in a PIC24 based mechatronics trainer we use the motor speed sensor is a simple system where a fan interrupts a beam 1. the signal from the fan is fed to a digital input with interrupt on change - a count is accumulated 2. timer runs for a tenth of a second and the calculation for rpm is (the fan h