Angle English: angle
Expanded Knowledge:
Basic Concepts
Angle is a mathematical concept. It is used to describe the magnitude of an angle, which is the amount that either of two intersecting straight lines must turn when superimposed on the other. The degree is the unit used to measure the size of an angle and is symbolized as °.
Basic Explanation
Angle is a measure of the amount by which any one of two intersecting lines must be turned when superimposed on the other, the rotation taking place in the plane in which the lines lie and around the point of intersection.
Practical Applications
Angle Sensor: used to detect angles.
It has a hole in its body that fits into LEGO's axis. When attached to the RCX, the angle sensor counts every 1/16th turn of the axis. The count increases when turning in one direction and decreases when the direction of rotation changes. The count is related to the initial position of the angle sensor. When the angle sensor is initialized, its count value is set to 0. You can reset it programmatically if desired.
Position and speed can be easily measured by calculating the angle of rotation. When wheels are attached to the robot (or gearing is used to move the robot), the distance the robot moves can be inferred from the angle of rotation and the number of wheel circumferences. The distance can then be converted to velocity, which you can also divide by the time taken.
Applications:
1, industrial machinery, engineering machinery construction equipment, petrochemical equipment, medical equipment, aerospace instrumentation, defense industry and other rotational speed and angle measurement.
2, automotive electronics foot throttle angular displacement, steering wheel position, seat position, headlight position;
3, automation robotics, motion control, rotary motor rotation and control.
Inclination sensor: used for system level measurement
From the working principle can be divided into "solid pendulum" type, "liquid pendulum" type, "" gas pendulum" three kinds of inclination sensor. Gas pendulum" three kinds of inclination sensor, inclination sensor can also be used to measure the amount of change in inclination relative to the horizontal plane.
The theoretical basis is Newton's second law, according to the basic physical principles, within a system, speed can not be measured, but can measure its acceleration.
If the initial velocity is known, the linear velocity can be calculated by integration, and thus the linear displacement can be calculated. So it is actually an acceleration sensor that utilizes the principle of inertia.
When the inclination sensor is at rest, i.e., there is no acceleration in the lateral and vertical directions, then only the acceleration of gravity acts on it. The angle between the vertical axis of gravity and the sensitive axis of the acceleration sensor is the angle of inclination.