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相关概念视频

Cartesian Vector Notation01:28

Cartesian Vector Notation

774
Cartesian vector notation is a valuable tool in mechanical engineering for representing vectors in three-dimensional space, performing vector operations such as determining the gradient, divergence, and curl, and expressing physical quantities such as the displacement, velocity, acceleration, and force. By using Cartesian vector notation, engineers can more easily analyze and solve problems in various areas of mechanical engineering, including dynamics, kinematics, and fluid mechanics. This...
774
Bus Impedance Matrix01:24

Bus Impedance Matrix

120
Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
120
Vector Representation of Complex Numbers01:16

Vector Representation of Complex Numbers

122
Complex numbers, represented in Cartesian coordinates, can also be visualized as vectors. These vectors can be expressed in polar form, emphasizing their magnitude and angle. When a complex number is input into a function, the output is another complex number, highlighting the function's zero point from which the vector representation can originate.
Consider a function defined as the product of the complex factors in the numerator divided by the product of the complex factors in the...
122
Even and Odd Signals01:17

Even and Odd Signals

824
An even signal, whether in continuous-time or discrete-time, is defined by its symmetry with its time-reversed version. Mathematically, this is represented as
824
Phasor Arithmetics01:13

Phasor Arithmetics

304
Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...
304
Bulk Modulus01:21

Bulk Modulus

307
The bulk modulus is a scientific term used to describe a material's resistance to uniform compression. It is the proportionality constant that links a change in pressure to the resulting relative volume change.
307

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相关实验视频

Updated: Jul 1, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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一个19位的小绝对矩阵编码器.

Liming Geng1, Guohua Cao1, Chunmin Shang1

  • 1Mechanical Engineering Faculty, Changchun University of Science and Technology, Changchun 130022, China.

Sensors (Basel, Switzerland)
|March 13, 2024
PubMed
概括
此摘要是机器生成的。

一个新的绝对矩阵编码器提供了19位分辨率,小型化设计 (Φ30 mm × 20 mm) 和高2.57"角度测量精度,满足AI和航空航天领域的需求.

关键词:
代码磁盘设计 代码磁盘设计编码器微型化的编码器.矩阵编码器编码器矩阵编码的编码.

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相关实验视频

Last Updated: Jul 1, 2025

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科学领域:

  • 工程 工程师 工程师 工程师
  • 计算机科学 计算机科学
  • 光学是什么?光学是什么?光学是什么?

背景情况:

  • 人工智能 (AI) 和航空航天应用中对小型化,高精度编码器的需求日益增加.
  • 现有的编码器技术在平衡尺寸和精度方面存在局限性.

研究的目的:

  • 提出一个新的绝对矩阵编码器设计.
  • 为了实现19位矩阵编码,提高测量准确性和减少代码磁盘复杂性.

主要方法:

  • 一个新的矩阵代码盘的设计,上面刻有两个圆圈.
  • 编码和解码方法的开发.
  • 解码电路的设计和Matlab模拟的实施.
  • 进行实验错误分析.

主要成果:

  • 开发的编码器实现了30mm × 20mm的超小体积.
  • 达到2.57弧秒的角度测量精度.
  • 证明了19位矩阵编码能力.

结论:

  • 提出的绝对矩阵编码器有效地满足了小型化和高精度的需求.
  • 该设计为需要精确角测量的先进人工智能和航空航天系统提供了有前途的解决方案.