Questions tagged [quadrature-encoder]

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PID control brushed motors via PWM using Encoder Clicks at SetPoints/Measurements

I've read numerous posts (1 , 2, 3 ) about using PID to control motors. All examples I've seen deal with the control signal being in the same units as the measurement signal. For example, use PID to ...
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1answer
23 views

Given this old pin diagram and numbers on this old encoder, what would be a suitable modern encoder to use?

My place of work has recently acquired a Hydraulic Press Break from the 80's. It has a CNC controlled back stop which is driven by a DC motor and Screw drive. The encoder which couples to the motor ...
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3answers
40 views

How to avoid false encoder counts due to vibration in robot?

I have a couple of motors on my mobile base other than the drive motors, and they tend to create vibration in the robot. When these motors are turned on, the wheel's encoder ticks increase without any ...
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0answers
21 views

Serial communication of IMU and Encoder arduino code

Pls, I need people to help me look at where I am getting it wrong. I test this code on Arduino ide and got the result I wanted but sending it to Matlab through serial communication, I obtained a ...
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1answer
39 views

I2c arduino connection

I am working on a wheel mobile robot which with multiple sensors which are IMU, two encoders, four ultrasonic sensors and using two Arduino: Uno and Mega. The IMU, encoders and the ultrasonic sensors ...
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1answer
86 views

Extended Kalman filtering for IMU and Encoder

I am trying to fuse IMU and encoder using extended Kalman sensor fusion technique. how do I fuse IMU pitch, roll with the orientation data I obtained from the encoder. Also, how do I use my position x ...
2
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0answers
39 views

Motor acceleration and position with PID control

I'm working on a robot with differential drive (2 drive wheels equipped with rotary encoders and 4 free spinning omni wheels for stability) and each wheel is controlled via a separate arduino nano. I ...
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0answers
63 views

two wheel mobile robot odometry

I am using an encoder to calculate the position and orientation of a mobile robot. The robot has two-wheel and each wheel is attached with an encoder, the result I am getting for my position x,y and ...
0
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1answer
59 views

Calculate ticks with three encoders?

I have a question regarding calculating the ticks in a sensored BLDC. The BLDC has three hall effect sensors with slightly differing phasing and there are 30 magnets in 360 degrees of wheel rotation. ...
2
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0answers
30 views

How to determine the required CPU speed for a micro-controller with a 2-phase encoder attached to interrupts?

I am building a high-torque steering servo. I am trying to use the Adafruit Feather M0, which has a CPU speed of 48MHz, to monitor a 2-phase encoder that has 2400 pulses per rotation. I have attached ...
0
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1answer
57 views

Minimum distance for a shaft coupling

What is the minimum shaft distance required to do a shaft coupling. I want to mount encoders on my motors but the shaft length is only 15 mm long. My encoders are 12 mm wide. So, I only have 3 mm to ...
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2answers
63 views

Motor encoders randomly start counting backward, then go back to normal

I am making an Arduino-controlled differential drive robot, and I am having the following problems: the encoders built into the motors are being used for measuring the rotary displacement, and while ...
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1answer
99 views

Roomba 500 Series - Raw encoder counts readings

I have been trying to read Roomba raw encoder counts I am receiving values, but I have a sudden increase/decrease in values as can be seen over here. 142 152 153 166 167 180 181 196 50101 ...
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0answers
28 views

How to mount encoder without rear shaft?

I am interested in this robot chasis: 4 wheel robot chasis There is no information on how to install encoders although the manual says it has space for encoders. The page says that the motors do ...
0
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1answer
461 views

Encoder for odometry (Wheel vs motor)

Hey i am building a ROS enabled robot which relies on Odometry data from encoders for the purpose of SLAM . I am confused between what would be more accurate in estimating the pose and robot ...
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2answers
336 views

What is the difference between speed encoders and esc

I understand that motors come with recommended speed controllers, be it encoders or esc. But what is the difference between the two?
2
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1answer
206 views

How can reading a quadrature encoder fail?

I am trying to the read the quadrature encoder on a ServoCity 624 RPM Premium Planetary Gear Motor w/Encoder with a SparkFun ESP32 Thing. I am supposed to see 228 counts per revolution, but I see 230-...
1
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1answer
484 views

RobotC Code Malfuncion (VEX Robotics Clawbot)

I have a standard VEX Clawbot, which I've been trying to make go straight for some time. I've been following this guide: http://www.education.rec.ri.cmu.edu/products/cortex_video_trainer/lesson/3-...
4
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2answers
3k views

Quadrature encoder signal from dc motor is very noisy

I'm starting out with robotics, got my first DC gear motor with quadrature encoder (https://www.pololu.com/product/2824): I ultimately plan to hook it up to a motor driver connected to a Tiva ...
5
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2answers
2k views

Why can't you buy continuous servos with absolute positioning?

I've been looking at parts for a beginners robotics kit (I teach at a museum) and have been wondering about servos. You can buy continuous servos with relative position encoders. But I can't find ...
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1answer
1k views

How to calculate the real time RPM of motor with rotary encoder?

I want to measure the real time RPM of the wheels. I think incremental rotary encoder would be good. But i am confused on how to interface it with DC brushless geared motors. From the images i am not ...
0
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1answer
741 views

Kalman Filter with incremental encoder + optical mice

Currently I am building a robots with 2 incremental encoders with a optical mice sensor. The reason to install a optical mice sensor is to provide better feedback when slippage happen on the encoders. ...
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2answers
416 views

Which encoder should I use with a 24V Dc motor and 6mm shaft?

I would like to control the position and velocity of a DC motor like this one (ZY MY 1016 - 24V - 10A - 200W). The motor comes with a 13 TOOTH SPROCKET and the diameter of the shaft is 6mm. It's not ...
4
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1answer
233 views

Quadrature Encoder Counts

Actually , I have been since two weeks looking for convinced and final solution for my problem , actually I am completely lost , I am working on mobile robot (Rover 5) with 2 motors , 2 encoders . the ...
2
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1answer
700 views

Counts of Quadrature Encoder

Simply, I had Rover 5 with 2 DC motors and 2 quadrature encoders, I just want to use encoders to measure the distance of travelling for each wheel. To start with, I just want to determine the total ...
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2answers
1k views

translation the shaft encoder data

I am designing a robot in real world and i want to plot everything in X,Y (Cartesian) coordinates I just want to use the encoders of wheels to determine the current position of mobile robot and its ...
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2answers
1k views

DC motor with encoder

Can anyone help me out here with this DC motor, especially the encoder part? I tried searching around for its datasheet but its as short as 1 page and the only spec I get are: Encoder: 1 pulse/...