As gyrocompass : The directional gyro may not seek out north, but a gyrocompass does. It does so by detecting the rotation of the earth about its axis and then seeking the true north, instead of the magnetic north.
Usually, they have built-in damping to prevent overshoot when re-calibrating from sudden movement. With accelerometers : Gyroscopes are also used along with accelerometers, which are used to measure proper acceleration. While a simple accelerometer consists of a weight that can freely move horizontally, a more complicated design comprises a gyroscope with a weight on one of the axes.
For more information about accelerometers, check out our blog on accelerometers. In Consumer Electronics : Given the fact that the gyroscope helps calculate orientation and rotation and is used for maintaining a reference direction or providing stability in navigation, designers have incorporated them into modern technology. In addition to being used in compasses, aircraft, computer pointing devices, gyroscopes are now also used in consumer electronics.
In fact, Apple founder Steve Jobs was the first one to popularize the usage or application of the gyroscope in consumer electronics; he did so by using them in the Apple iPhone. Since then, gyroscopes have come to be commonly used in smartphones.
Moreover, a few features of Android phones - think PhotoSphere or Camera and VR feature - can not work without a gyroscope sensor in the phone. It is the Gyro sensor in our smartphones that senses angular rotational velocity and acceleration. This is what makes it possible for us to play using motion senses in our phones, tablets.
When we move our phone, the photo or the video moves due to the presence of a tiny gyroscope in the phone. In toys : Gyroscopes are also used in toys, in fact there are toy gyroscopes which make for great educational tools as they help kids understand how gyroscopes work.
In bicycles : Electric powered flywheel gyroscopes inserted in bicycle wheels are said to be a good alternative to training wheels. In cruise ships : Cruise ships use gyroscopes for leveling motion-sensitive devices such as self-leveling pool tables. Below is a video about gyroscopes, it tells you how they work, where they are used and more This blog is presented to you by YoungWonks. The leading coding program for kids and teens. Sign up for a free trial class by filling out the form below:.
An introduction to gyroscopes, where are they used and how do they work? Read this blog to know more… This blog takes a look at gyroscopes, their variants and myriad uses today…. This blog takes a look at all this and more… What is a Gyroscope? A Brief History of Gyroscopes Essentially, a gyroscope is a top combined with a pair of gimbals. How does a Gyroscope Work? Sometimes this is an advantage over an analog gyro. There are many specifications to consider when figuring out what type of gyro to use.
Here are a few of the more important useful ones:. The measurement range, or full-scale range, is the maximum angular velocity that the gyro can read.
Think about what you are measuring. Do you need to measure the spin of a record player, which is very slow or a spinning wheel, which could be very fast?
It determines how much the voltage changes for a given angular velocity. A good rule to remember: as the sensitivity increases, the range decreases. For example, look at the LPY gyro datasheet or any gyro with a selectable range:. As with any sensor, the values you measure will contain some amount of error or bias.
You can see gyro bias by measuring the output when the gyro is still. These errors are sometimes called bias drift or bias instability. The temperature of the sensor greatly affects the bias. To help minimize the source of this error, most gyros have a built in temperature sensor. Thus, you are able to read the temperature of the sensor and correct or any temperature dependent changes.
In order to correct for these errors, the gyro must be calibrated. This is usually done by keeping the gyro still and zeroing all of the readings in your code. By now you should know how a gyro works and have a good foundation to start working with a gyro in a project of your own.
Need Help? Mountain Time: Shopping Cart 0 items. Product Menu. Today's Deals Forum Desktop Site. All Categories. Development Single Board Comp. Home Tutorials Gyroscope Gyroscope. Contributors: Member What is a Gyroscope Gyroscopes, or gyros, are devices that measure or maintain rotational motion. Favorited Favorite 25 Wish List. This mysterious effect is precession. In the general case, precession works like this: If you have a spinning gyroscope and you try to rotate its spin axis, the gyroscope will instead try to rotate about an axis at right angles to your force axis, like this:.
Why should a gyroscope display this behavior? It seems totally nonsensical that the bicycle wheel's axle can hang in the air like that.
If you think about what is actually happening to the different sections of the gyroscope as it rotates, however, you can see that this behavior is completely normal! Let's look at two small sections of the gyroscope as it is rotating -- the top and the bottom, like this:.
When the force is applied to the axle, the section at the top of the gyroscope will try to move to the left, and the section at the bottom of the gyroscope will try to move to the right, as shown.
If the gyroscope is not spinning, then the wheel flops over, as shown in the video on the previous page. If the gyroscope is spinning, think about what happens to these two sections of the gyroscope: Newton's first law of motion states that a body in motion continues to move at a constant speed along a straight line unless acted upon by an unbalanced force.
So the top point on the gyroscope is acted on by the force applied to the axle and begins to move toward the left. It continues trying to move leftward because of Newton's first law of motion, but the gyro's spinning rotates it, like this:. This effect is the cause of precession. The different sections of the gyroscope receive forces at one point but then rotate to new positions!
When the section at the top of the gyro rotates 90 degrees to the side, it continues in its desire to move to the left. The same holds true for the section at the bottom -- it rotates 90 degrees to the side and it continues in its desire to move to the right. These forces rotate the wheel in the precession direction. As the identified points continue to rotate 90 more degrees, their original motions are cancelled.
So the gyroscope's axle hangs in the air and precesses. When you look at it this way you can see that precession isn't mysterious at all -- it is totally in keeping with the laws of physics! The effect of all this is that, once you spin a gyroscope, its axle wants to keep pointing in the same direction.
If you mount the gyroscope in a set of gimbals so that it can continue pointing in the same direction, it will. This is the basis of the gyro-compass.
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