The angle meter, as its name suggests, is used to detect angles. When the axis in the base of the angle meter is rotated in one direction, the count increases, and when the direction of rotation changes, the count decreases. The count is related to the initial position of the angle meter. When the angle meter is initialized, its count value is set to zero. Position and speed can be easily measured by calculating the angle of rotation.
Development status
Precision angle measurement is an important project of geometric quantity measurement, and it is also a branch with relatively complete development in metrology science. In the past 20 years, the accuracy of angle measurement has also increased by more than 10 times.
Angle measurement technology is divided into static measurement and dynamic measurement. Some static measurement techniques are still the basis of dynamic measurement, and some dynamic angle measurement techniques can realize static measurement. At present, many important measurement and control instruments, such as gyro turntables, inertial navigation platforms, theodolites, star trackers, radars, missile launchers, space telescopes, high-precision CNC machine tools, robots, etc., generally require angle sensors for measuring The absolute rotation angle of the object relative to a reference orientation or relative rotation angle relative to itself at different times. With the development of measurement and control technology, the accuracy of measurement and control required by the system is getting higher and higher.
However, there are still various problems in angle measurement, mainly: high precision or high precision can only be obtained when measuring at small angles, the accuracy is increased, the size and weight of the product are too large, and the measurement of the full-perimeter absolute angle measuring device The precision is not high, there are technical difficulties in miniaturization, the dynamic range is small, the critical components are demanding, the environment requirements are high, the reliability is low, and it is difficult to integrate with other instruments. With the development of science and technology, military, aerospace and various industries in the national economy have placed increasing demands on angle sensors. Under the condition of the same measurement accuracy, the urgent need for low cost, small size,
Highly reliable replacement products. The new angle sensor shifts the measured input angle value from the spatial domain to the time domain, thus completely eliminating the high-precision machining process required in the production of traditional photoelectric encoder discs (causing high production costs) and achieving production under the same precision conditions. The cost is greatly reduced, and the product performance price ratio is greatly improved. The production cost of the new angle sensor is only about 1/5 of the traditional photoelectric encoder disk, and a new angle sensor test prototype has been made. The new angle sensor uses advanced DSP technology to facilitate on-line processing and long-distance operation. The performance in dynamic measurement is unmatched by the photoelectric encoder disk. The new angle sensor is an ideal replacement for an angle sensor. Because the new angle sensor adopts a new angle measurement principle, it does not need high-precision machining technology at all, which on the one hand greatly reduces the production cost and greatly improves the reliability of its products, which is extremely extreme for aerospace and a large number of civilian products. Important performance, and easy remote transmission, digital processing and storage, these unique features are unmatched by the prior art.
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