Complete “Right Face” 1. Open the Robotics Engineering Software Vol. I. Click Projects
2. Finished the “Right Face” Lab and associated lab worksheet.
3. Add your completed Worksheet: Right Face to your Robotics Notebook
Complete “Measured Turns”
4. Open the Robotics Engineering Software Vol. I. Click Projects
5. Finished the “Measured Turns” Lab and associated lab worksheet.
6. Add your completed Worksheet: Measured Turns your Robotics Notebook
When you are finished with the labs:
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Make a blog comment on your experience with your testing and feedback
• How can you calculate an exact turning radius with your robot?
• What factors contribute to making a precision turn?
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7 comments:
In this section, we learned how to do two types of turns and measure them as well. The two types of turns are swing turns and point turns.
In a swing turn, one wheel moves and the other one stops. in a point turn, one wheel goes forward while the other goes backwards. to measure the turns of robots, you must take two measurements, the measurement of the circle you want the robot to go around and the measurement of the circumference of the wheel. using these two points, you must set up a ratio between the angle measure you want the wheel to turn and the measurements of the wheel. some factors that contribute to making a precision turn are measuring the two circumferences exactly and the surface the wheel that stays put is on because more friction can cause a less accurate turn.
In this section, we learned how to do two types of turns and measure them as well. The two types of turns are swing turns and point turns.
In a swing turn, one wheel moves and the other one stops. In a point turn, one wheel goes forward while the other goes backwards. To measure the turns of robots, you must take two measurements, the measurement of the circle you want the robot to go around and the measurement of the circumference of the wheel. Using these two points, you must set up a ratio between the angle measure you want the wheel to turn and the measurements of the wheel. Some factors that contribute to making a precision turn are measuring the two circumferences exactly and the surface the wheel that stays put is on because more friction can cause a less accurate turn.
We learned how to use two types of turns one is a swing turn and the other is point turn. A swing turn is when one wheel is in motion and the other is not, a point turn is when one wheel moves forward and the other tire reverse. Measuring the turns of a robot you must first take two measurements the measurement of the circle and the circumference of the wheel with these measurements you will setup a ratio between angle and circumference.
In this previous lab that I did yesterday I learned about what the difference is between a point turn and a swing turn. The difference is that a swing turn is that you have one wheel stay still and the other wheel move forward. A point turn is when you have one wheel move forward and the other backwards.
The calculations that you need to find out are the circumference of the circle and the circumference of the wheel. It’s also best to use a smooth surface so that your measurements are more accurate.
Questions:
How can you calculate an exact turning radius with your robot?
Angle turned/full circle= Distance travelled by wheel/ circumference of traced wheel
What factors contribute to making a precision turn?
The programing that you use if you use a swing turn or a point turn, and the wheels that you use.
From the investigation of "Making Turns", I learned how to calculate an exact turning radius with my robot. In order to calculate a radius, I must know the measurement of circle for my robot to go around, and the circumference of the wheel of my robot. Then, I just calulate by the ratio of the angle my robot wheel turns, and the measurement of the wheel.
In addition, there are some factors that contribute to making a precision turn. These factors are, that exact measurement of the circumferences of the circle and the wheel. And the type of wheel, whether it is stable and smooth.
In the investigation of Right Turn, I learned how to rotate my robot. There are two ways to rotate my robot, and are swing turn, and point turn. They both rotates, but the movement of motors are different, and their whole movements are slightly different. Swing Turn, is when I only use one side of motor to rotate, which measn the one of the two motors will only move, and another one will not move. Oppose to this, Point turn, is when both motors are moving, but at opposite direction. Which means that one of two motors, will go forward, and another one will go backward. The difference between whole movement of two types of rotations is the space they require to turn. Swing Turn requires a lot more space, as it is going over to the outside. However Point Turn only requires just the space of the robot itself, as it is turning on the point, where the robot stands.
In the investigation of Measured Turn, I learned how to control the angles of rotations. I can always know how much my robot will turn, by calculation. In order to calculate, I need to know how much the angle for my robot to turn, circumferences of the circle, and circumferences of the wheel of my robot. By these informations, I can set up and direction and from 0 to 360 degrees.
Turning...
Programming a robot to make a precise turn sounds hard at first, but it’s not really hard as long as you have the formulas and measurements.
From what I know, there are two type of turns that an ordinary NXT-Taskbot can be programmed and run. One of the two types is "swing turn", a simple maneuver for one's taskbot. A swing turn is when the set of wheel(s) of one side operates in a backwards or forwards motion while the other set on the other side is stationary. This can be calculated easily with the right formulas (see bottom of post). The other type of turn is called "point turn", a manoeuvre that looks somewhat complex. A point turn is when one set of wheels on one side of the taskbot operates the opposite direction (movement) of the other. I am not sure how to calculate a precise turn, however I believe it is similar to swing turn.
(Warning! A few things can change the outcome of your desired turn - check wheels)
FORMULAS:
1. (Angle turned)/ (full circle) = (distance travelled by wheel)/ (circumference of traced circle)
2. (Calculated answer of above) = (circumference of wheel)* X/360
3. X = degrees (rotations sensor)
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