此示例说明如何使用 Simulink® 以两种不同方法对弹球建模。
Use Simulink® to model a hydraulic cylinder. You can apply these concepts to applications where you need to model hydraulic behavior. See two related examples that use the same basic components: four cylinder model and two cylinder model with load constraints.
此示例说明如何使用 Simulink® 来创建房屋的热模型。此系统对室外环境、房屋的热特性和房屋供暖系统进行建模。
Approximate nonlinear relationships of a type S thermocouple.
Some of the main steps needed to design and evaluate a sine wave data table for use in digital waveform synthesis applications in embedded systems and arbitrary waveform generation instruments.
此示例说明 Simulink® 中过零的工作原理。在此模型中，三个经过偏移的正弦波被馈送到绝对值模块及饱和模块中。在正好 t = 5 时，开关模块的输出从绝对值变为饱和模块。Simulink 中的过零将自动检测到开关模块具体何时更改其输出，求解器将步进到事件发生的确切时间。您可以通过检查示波器输出来查看这些信息。
This model was inspired by the classic paper "Galactic Bridges and Tails" (Toomre & Toomre 1972). The original paper explained how disc shaped galaxies could develop spiral arms. Two disc shape galaxies originally are far apart. They then fly by each other and almost collide. Once the galaxies are close enough, mutual gravitational forces cause spiral arms to form.
Use Flip-Flop blocks (found in the Simulink® Extras Library) to implement a Modulo-4 counter. The model takes the output of a Modulo-4 counter and generates a half clock cycle width pulse on every fourth clock pulses. Effectively, it produces a pulse whenever both outputs of the Modulo-4 counter are equal to 1.
The contrast between enabled subsystems and triggered subsystems for the same control signal, through the use of counter circuits. After running the simulation, the scope shows three plots.
此示例介绍了一种在 Simulink® 中对摩擦建模的方式。模型中的两个积分器用于计算系统的速度和位置，然后将计算结果用于在 Friction Model 中计算摩擦力。
Handle state events. Run the simulation and see the phase plane plot, where the state x1 is along the X-axis and the state x2 is along the Y-axis.
Use Stateflow® to model a bang-bang temperature control system for a boiler. The boiler dynamics are modeled in Simulink®.
此示例说明如何对倒立摆建模。动画是用 MATLAB® Handle Graphics® 创建的。动画模块是一个封装的 S-Function。有关详细信息，请使用上下文菜单查看 Animation 模块的封装下的内容，并打开 S-Function 进行编辑。
此示例说明如何对一个具有周期性变化的外力函数的双弹簧-质量-阻尼系统建模。与该示例相关联的一个动画函数将自动打开图窗窗口并在其中显示。在此系统中，唯一的传感器连接到左侧的质量模块上，执行器连接到左侧的质量模块上。使用了状态估计和 LQR 控制。
Two cases where you can use Simulink® to model variable transport delay phenomena.
Model a Foucault pendulum. The Foucault pendulum was the brainchild of the French physicist Leon Foucault. It was intended to prove that Earth rotates around its axis. The oscillation plane of a Foucault pendulum rotates throughout the day as a result of axial rotation of the Earth. The plane of oscillation completes a whole circle in a time interval T, which depends on the geographical latitude.
Solve the differential equations for the Foucault Pendulum problem and displays the pendulum bob movement in the VRML scene. You can modify the Pendulum location by changing the Latitude / Longitude constant values in the model and other parameters (g, Omega, L and initial conditions) in MATLAB® workspace.
The behaviour of variable-step solvers in a Foucault pendulum model. Simulink® solvers ode45, ode15s, ode23, and ode23t are used as test cases. Stiff differential equations are used to solve this problem. There is no exact definition of stiffness for equations. Some numerical methods are unstable when used to solve stiff equations and very small step-sizes are required to obtain a numerically stable solution to a stiff problem. A stiff problem may have a fast changing component and a slow changing component.
The example shows how to use Simulink® to explore the solver Jacobian sparsity pattern, and the connection between the solver Jacobian sparsity pattern and the dependency between components of a physical system. A Simulink model that models the synchronization of three metronomes placed on a free moving base are used.
Choose the correct zero-crossing location algorithm, based on the system dynamics. For Zeno dynamic systems, or systems with strong chattering, you can select the adaptive zero-crossing detection algorithm through the Configure pane:
Use Simulink® to create a model with four hydraulic cylinders. See two related examples that use the same basic components: single cylinder model and model with two cylinders and load constraints.
Model a rigid rod supporting a large mass interconnecting two hydraulic actuators. The model eliminates the springs as it applies the piston forces directly to the load. These forces balance the gravitational force and result in both linear and rotational displacement.
Model transport delay in a variable speed conveyor belt.
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