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153 Threads found on edaboard.com: Motor Encoder
Hello, to save time, I need buy one board to control the position of the motor. The requirements are: - Coreless DC motor. - Power of the motors: 90W - Voltage of the motor: 24V - Quadrature encoder of 500 pulses/turn Somebody can help me? My target price is about 100?. Thanks!
You can put output from encoder to interrupt pin and detect state change. So you can meassure time between pulses to get rpm and use PID algorithm for motor speed control. You can also put timer on overflow on 1/10s and count number of pulses in that time period to calculate RPM. In this manner you will have time delay of 1/10s for feedback but in
I have a motor and arbor from an HP scanner. HP circuit board c6734-60161A The motor has a shaft encoder on the end. It looks to be optical and single channel. The wire colors are BR,G,Y,R,O,Black How can I figure what the other wires are? I only have common bench equipment. Green and Brown are power leads to the (...)
In Your application the ppr depents on how fast you want to control the motor. Regards Nandhu
I bought a D-Tran robot with three Yaskawa Ac servos, I also bought 3 positioning drives for them. But everywhere I have looked they show a rectangle conector on the motor for the encoder. these are not the same. here are the motor numbers of two of them. SGM-01A3S011 AND SGM-08A3S011. these are single row conectors, not the double row as in (...)
An incremental encoder is attached to the motor shaft, and the output signals from the encoder is used to calculate the speed of the motor. If there is some misalignment between the shaft and the encoder, do you think the calculated speed will be constant or consistent? Assume that the motor (...)
I would suggest that you calculate the required speed difference between the wheels (this is the number of encoder samples) and use PWM to drive each motor independently. This will allow the vehicle to move in circular or any other arbitrary paths. By running both motors at the same speed for different times the wheel with fewer steps will (...)
A servo motor is a DC motor that has closed loop control integrated. Typically you provide a location and the servo motor maintains the selected position (within the physical and mechanical limits of the motor, gearbox and electronics.) Cheers, Slayer
Hi there, I have been trying to understand the theory on how the servo system works. Unfortunately, the infomations i gathered through the internet are bits and pieces. What i really need is to understand how the feedback of the tacho/ encoder communicates with the position of the servo motor. And I also need to know how many types of contro
i am using a small toy car motor for my project. how can i measure the speed of a small motor which is used for toy car.
Hi all,.. I am currently need to build a AC 3 Phase motor controller with Microcontroler (PIC C51 or AVR) and use a Rotary encoder to get stability of motor ratation. Please advise me, and to share any resource to it's thank's in advanced ''jorank''
i've just bought a Hitachi DC motor. But i know nohow to use its encoder. it has 4 output lines and it's a GP3A53R sharp photointerupter. i can't find the datasheet. many other motors and encoders in me and my friends' lab also dont have datasheet.
i maked a bridge with 4 mosfet for DC motor , i control bridge througt MC in pwm and receive encoder A-B signal from axis'motor , now the noise of 25khz disturb too much the encoder's signal and software PID go-out , what must i connect on bridge to protect encoder's signals? thankyou
wat sensor shud be used to sense the rotation and the speed of the servo motor Shaft encoder - this is the most common sensor for position and velocity of servo motors. They can be a bit expensine, though.
What's your desired precision for the position measurement? How long is the rod? Optical strip is a good idea. If the carriage uses rack and pinion with teeth to move along the rails, you can add a rotary encoder to the motor. If you have a frictional rack and pinion, I would add a separate non-driven wheel with a rotary encoder for (...)
You can get pic's that are designed for motor control with 6 or 8 pwm outputs and encoder or hall sensor inputs. Such as the pic18f4431. and also the dsp pic range. Check out microchip for schematics and application notes.
Hello BabyTiger, Regarding the nameplate, A and B usually are two square signals shifted 90 degrees (electrical) Having these two phase shifted signals enables you to determine if your motor turns clockwise or counterclockwise, and could improve resulution up to a 4x. C is usually a pulse signal activated once per revolution, you can see you
DC motor speed can be varied by varying its termianl voltage. If the available supply if a DC supply, then you can use a chopper and control voltage output by PWM generated from the microcontroller. If you need precise speed control, you will need to perform closed loop control. You first need to measure the motor speed. The ecoder in the (...)
hi, I have a problem with a SpartanII design. I am driving 5V logic devices with spartanII. These logic devices are L293D's for DC motor driving and AM26LS32 for receiving quadrature encoder signals. Spartan II's are 5V tolerable. I am working on a servo controller. My problem is i am writing vhdl code. My first vhdl code does not involve all th
Hello, Do you have any articles or links about the DC motor position control with multiple closed loops. I mean using a position sensor (encoder) then computing the position error (desired position - real position), then we know that the motor does have to go at the desired position in a time T so we can compute a speed error. Then, we (...)