缓冲区、开关和计数器
R2026a使用 Buffer、Unbuffer 和 Delay Line 等帧重缓冲模块在 Simulink® 中转换信号速率和帧大小。使用 Simulink 中的 Queue、Stack 模块和 MATLAB® 中的 dsp.AsyncBuffer 对象实现 FIFO 和 LIFO 缓冲区。您还可以使用 DSP System Toolbox™ 中的开关模块和计数器模块对事件进行计数、检测边缘以及在事件发生时执行操作。
对象
dsp.AsyncBuffer | FIFO buffer |
函数
rebuffer_delay | Number of samples of delay introduced by buffering and unbuffering operations |
模块
 | Buffer | 将输入序列分组或合并为更小或更大的帧大小 |
 | N-Ratio Buffer | Buffer input data into integer-multiple-sized frames (自 R2026a 起) |
 | Delay Line | Rebuffer sequence of inputs |
 | Queue | Store inputs in FIFO register |
 | Stack | Store inputs into LIFO register |
 | Unbuffer | Unbuffer input frame into sequence of scalar outputs |
 | N-Ratio Unbuffer | Unbuffer input data into integer-factor-sized frames (自 R2026a 起) |
 | Counter | Count up or down through specified range of numbers |
 | Edge Detector | Detect transition from zero to nonzero value |
 | Event-Count Comparator | Detect threshold crossing of accumulated nonzero inputs |
 | Multiphase Clock | Generate multiple binary clock signals |
 | N-Sample Enable | Output ones or zeros for specified number of sample times |
 | N-Sample Switch | Switch between two inputs after specified number of sample periods |
主题
- Sample- and Frame-Based Concepts
Explore basic signal concepts in the context of a Simulink model. Learn more about sample-based processing and frame-based processing.
- Buffering and Frame-Based Processing
Convert signals of frame size
1into signals of frame size greater than1, and vice versa. - Convert Sample and Frame Rates in Simulink Using Frame Rebuffering Blocks
Learn how frame rebuffering blocks impact the sample rate and frame rate of signals in Simulink models.
- Delay and Latency
Configure the Simulink environment to minimize delay and increase simulation performance.
- Why Does Reading Data from the dsp.AsyncBuffer Object Give a Dimension Mismatch Error in MATLAB Function Block?
Resolve the dimension mismatch error when you read data from an Async buffer inside the MATLAB function block.
- Why Does the dsp.AsyncBuffer Object Error When You Call read Before write?
Initialize the async buffer by calling either setup or write before the first call to read.
