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46 Threads found on Encoder Speed Motor
Hi everyone, I am facing some problems in performing clarke-park transform for an induction motor(4 pole stator, squirrel cage IM). I am measuring the rotor position from the encoder and using twice of this value as theta for the park transform(position in radians). But since the rotor speed is slightly less than the synchronous (...)
Which input signal are you reading to get the speed information, e.g. incremental encoder pulses? What's the range and intended coding for the speed output signal?
i am using optical encoder in my dc motor speed control project using pid controller and pic16f877a and l293d. i set my output to 80rpm .but encoders output goes upto 166 . so basically the reading what optical encoder shows what is that reading ??? is it rpm or some other measurement. i have also added (...)
I am building a humanoid robot with DC motor actuated fingers. There are 16 brushed DC motors to be position controlled with help of hall effect sensors implanted at the joints of each fingers. I need a developed driver board to control these 16, 3 watt, 12 v,DC motors. Also each motor is equipped with an incremental (...)
I want to use the DRV8312 motor driver by TI to implement speed control of a BLDC motor. The motor has Hall sensors and encoder inbuilt. I am using STM32F4 discovery board. I want to use Hall sensor control. Can anyone tell me what circuit to use and what inputs to be provided to the motor (...)
i am having a panasonic servo drive and motor that accepts step and direction signals. The encoder from the motor is connected to the servo drive and there is an option to take encoder feedback and connect to plc are micro controller. my doubt is that if i give 2000 pulses from a micro controller like pic it makes one (...)
Hello! You can use a sensor attached to the blades or a encoder on the fan to measure the speed.
Please, am new to the project world. I am also a newbie at this forum. Pls i need help concerning this project. I am meant to 'get speed' and 'set speed' using a GSM modem, PIC 16F877A, LCD, DC motor, Optical encoder. I don't know how to program the microcontroller to set the speed using PWM and get the (...)
Hello guys I have a motor equipped with an encoder, which can generate 3 pulses per revolution. encoder = 3 pulses per revolution 1 pulse represents 120 degree Is there any away to extract a precision up to 1 degree, Note that the motor speed is variable + acceleration is non linear. In simple i (...)
It is quite common/useful to use PWM for speed control whether you are using a stepper motor or simple brushed DC motor with feedback or measuring motor emf. With many robot arm applications it is important to have the position or angle so most often a stepper (in which you know how many degrees per step) or a (...)
Hi all,, Im making a robotic Project that fix its speed whatever the slope of the surface.... I bought two used motors that each have an encoder installed onto it, that works with the effect of Hall Sensor. Im working with Pic 18F452. This is the speed and direction circuit for one motor : 93283 (...)
Hello, Is it possible to communicate without encoder a 5v arduino board with a servo,to measure speed? :???: if not,what encoder i must use? Thanks a lot
Thank you all for replying !!!!!!!!! I went through some DC motor control devices and have some ideas and questions. I thought of a device that can control motor speed of DC motors that has a range of supply voltages. The device will have an encoder input that can detect the motor (...)
i want to check the speed and the direction of motor encoder(servo motor) via 8051... i have made the speed and direction parts of the program separately and they work fine but when i combine those parts it is not giving the direction properly.....need help urgent
Before IGBTs and mosfets, scr were widely used for dc motor control. I repaired a 'folk lifter motor controller' with a 48V, 275A DC motor. A 450A thyrister was used as controller unit and a 50A thyrister to generate pulse to switch it off. An optical encoder in accelerator controls the speed. A huge (...)
I'm currently studying Diploma in Electronic & Telecommunication Engineering. My project title is 12V DC Geared motor speed Control using Microcontroller PIC16F877A. In this project, a 12V DC Geared motor with encoder, bought from Cytron Technologies is being used. It has 2 channel, which are Channel A and Channel B. In this (...)
After init etc., I calculate the speed in following way. Could someone help me find anything wrong here?? Buz the measured result varies time by time(when running the motor at constant speed). while(1) { if(TMR3<23000) { if(POS1CNT=0) {CntsRev=0; CntsRev+=1;} Cnts=POS1CNT+(CntsRev-1)*MaxCnt; (...)
Tachometer is only suitable when is possible to take measurement directily inside motor mechanism. However, many times it is not accessible. In this case, if motor have coupled reducer, an rottary shaft encoder must be used, due to low RPM property, wich could derail the cloed loop control. +++
I have a 10HP motor with 1.375"(~34mm) diameter shaft. What's the best encoder option for it?? Thx a lot!
Even with two the same motors, and the same drivers, I don't think the car will go straight for a log time due to tolerances. The only solution is to add a rotary encoder and an intelligent drive system (feedback loop). If your system uses a variable speed drive at the moment, you should process the actual wheel position or (...)