Posts 1 - 10 of 13

# Derivative of state ‘1’ in block ‘X/Y/Integrator’ at time 0.55 is not finite4

Let's look at another frequently visited MATLAB Answers page:Derivative of state '1' in block 'X/Y/Integrator' at time 0.55 is not finite.The ProblemHere is a simple model similar to the one I have... 続きを読む >>

# Special Vintage: Differential Equation Editor5

This week I feel like an archaeologist who just dug out a new species of dinosaur! I discovered the Differential Equation Editor... Differential Equation Editor Try typing dee in MATLAB. This... 続きを読む >>

I am recently visited the MathWorks Japan office and learned about interesting work done by my colleague Hitoshi Takeshita. In his MATLAB Central submission Euler–Lagrange equation, Hitoshi... 続きを読む >>

# Simulink Debugger: Monitoring Variable Step Solver Performance2

A few months ago I introduced my favorite command to analyze the performance of a variable-step solver. This week, I will introduce how the Simulink Debugger can be used for a deeper analysis of... 続きを読む >>

# Why do we need Stiff ODE Solvers?2

I hope you have noticed the new MATLAB Central blog: Cleve's Corner. Cleve once said "stiffness is an efficiency issue." Let's explore this from a Simulink point of view by revisiting an article by... 続きを読む >>

# THE Most Useful Command for Debugging Variable Step Solver Performance2

Today I want to share a trick I often use to determine if a variable step simulation runs as fast as it should. Visualizing the steps taken by a model To begin, save the simulation time data.... 続きを読む >>

# Continuous sample time inside For Each Subsystem7

Back in 2010, I wrote a post explaining how to apply a scalar algorithm to a vector using the For Each subsystem. At that time, only discrete algorithms could be vectorized that way. In R2011b, the... 続きを読む >>

# Parallel Computing with Simulink: Running Thousands of Simulations!11

Update: In MATLAB R2017a the function PARSIM got introduced. For a better experience simulating models in parallel, we recommend using PARSIM instead of SIM inside parfor. See the more recent... 続きを読む >>

# Refining the Output of a Simulation9

Today I am pleased to share a post from regular guest blogger, Guy Rouleau.  Enjoy! I often use Simulink to model the dynamics of simple systems. In most cases, the Simulink default... 続きを読む >>

# Modeling Mechanical Systems: The Double Pendulum34

Do you ever have to model mechanical systems?  Mechanical systems consist of bodies, joints, and force elements like springs.  In this post, I will show you how to model a double pendulum with base... 続きを読む >>

Posts 1 - 10 of 13