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John


Google Inc

Last seen: 2 months 前 |  自 2014 起处于活动状态

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Standalone Application Compiler for OSX
I'm confused on the process for generating a standalone application for OSX, using Application Compiler. I've read all the docu...

2 months 前 | 1 个回答 | 0

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提问


acker(): "Error using sym/poly". Why?
I'm trying to find the eigenvalues of a matrix H manually, where H represents some system dynamics. (The system is defined by ...

3 months 前 | 2 个回答 | 0

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Manually compute LQI() gains using Algebraic Riccati Equation / Hamiltonian
Thanks @Paul. Good point about being able to use place() as well. The main question was this one: Is there a better manual m...

3 months 前 | 0

提问


Manually compute LQI() gains using Algebraic Riccati Equation / Hamiltonian
I'm attempting to compile a Matlab program for embedded use, and that program also includes lqr() and lqi(). Since neither are c...

3 months 前 | 2 个回答 | 0

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提问


Simulink Switch doesn't propagate rate transition
How can I make a Simulink Switch to propagate rate transition? Right now I have two signal paths, of variable rates, with the r...

5 months 前 | 1 个回答 | 0

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提问


Extra zeros added to a TF by zero()
I'm seeing extra zeros added to a TF by zero(). Here's a state space TF, in zpk form (for compactness, as the SS form is large ...

5 months 前 | 2 个回答 | 0

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提问


Commenting out Simulink block changes in unrelated system
I have an issue where "Commenting Through" a Simulink block semmingly changes the response of an unrelated system. Say I have u...

5 months 前 | 1 个回答 | 0

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提问


Simulink Matrix multiply error: unexpected scalar signal mismatch
I'm confused by a Simulink error relating to a "mismatched port size". I have a scalar signal in a feedback loop -- the exact c...

5 months 前 | 1 个回答 | 0

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提问


Step() not working as expected with USS state space (Uncertain Sys)
I'm trying to figure out what step() is doing with uss (uncertain) discretized state space equations, for 2nd-order systems. Th...

5 months 前 | 1 个回答 | 1

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提问


How to tell if an object is an Uncertain state-space (USS) model?
I have a function that is overloaded, and takes both standard state space, and uncertain (uss) state space as inputs. Since c2d...

5 months 前 | 1 个回答 | 0

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提问


Adding InternalDelay for State Space system
Say I have a closed loop feedback system sys without any delays, represented as a state space system. It was 2 inputs: reference...

6 months 前 | 1 个回答 | 0

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lsim() vs step() : are different responses expected?
@Walter Roberson Thanks for verifying. I thought it was the same directory as well, ie it seems like the matching function is ca...

6 months 前 | 0

提问


lsim() vs step() : are different responses expected?
Are different responses expected if running lsim() and step(), both with the same unit step inputs? I have a state-space system...

6 months 前 | 2 个回答 | 0

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提问


Discretize State Space feedback controller using c2d()
I'm looking to discretize a State Space feedback controller using c2d(), to find loop rate limits with which this feedback syste...

6 months 前 | 1 个回答 | 0

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Is there lqid() ? Lqr() has lqrd(), but I can't find lqid()
To answer my own question, after writing to mathworks: lqr() has lqrd(), but there isn't an equivalent for lqi(). lqi() is over...

6 months 前 | 0

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提问


Is there lqid() ? Lqr() has lqrd(), but I can't find lqid()
Is there lqid()? Lqr() (continuous-time) has lqrd() (discrete-time), but I can't find lqid(). Is lqi() overloaded for discret...

6 months 前 | 1 个回答 | 0

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提问


Change rlocus() axis units to Hz?
How can I change the plotted rlocus() real axis units to Hz, vs rad/s? I tried Property Editor --> clicking on X axis --> More ...

6 months 前 | 1 个回答 | 0

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提问


Simulink error: Time-Varying State Space block
I have a Simulink error I can't figure out, relating to the Time-Varying State Space block dimensions. I'm using this block so...

7 months 前 | 2 个回答 | 0

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提问


LQG issue: state estimates always perfect
I'm working through an LQG controller for a simple 2nd-order spring/mass/damper system, using an LQR controller base. See my at...

7 months 前 | 1 个回答 | 0

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提问


LQI(): integrator response not as expected
I have a simple 2nd-order spring/mass/damper system in closed-loop configuration, that works as expected under LQR control; see ...

7 months 前 | 2 个回答 | 1

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提问


Transfer Function: Continuous approximation of discrete bode
Is there a straightforward way to create a continuous-time transfer function (TF) from a discrete-time TF, that matches the disc...

1 year 前 | 1 个回答 | 0

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提问


Estimate first order transfer function from Phase at Frequency
What command would I use to estimate a first order transfer function (TF), from a known Phase at Frequency? The TF is known o...

1 year 前 | 1 个回答 | 0

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提问


Find Bode Phase of Uncertainty models
How can I find the phase programatically, of an Uncertainty plot like this one? This transfer function is build using the Robust...

1 year 前 | 1 个回答 | 0

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提问


Manipulating "Uncertain" (ureal) plots
I'm using the Robust Control toolbox to plot uss (uncertain parameter) functions creating with ureal. Using eg Bode() will aut...

1 year 前 | 0 个回答 | 0

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提问


Simulink is optimizing out simple blocks -- why?
I'm trying to understand why Simulink is optimizing out simple blocks. This is a basic discrete filter. None of the input coef...

3 years 前 | 0 个回答 | 0

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Error in exponential transfer function
Interesting, thanks for the reply Walter. Could you clarify? I'm missing something basic here -- so I'd like to understand bett...

3 years 前 | 0

提问


Bug: Simulink 2019b crashes when accessing plot
On OSX (latest version), Simulink 2019b repeatedly crashes when accessing a plotted scope output. The model is basic: a step ...

3 years 前 | 2 个回答 | 4

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Error in exponential transfer function
Just a gentle bump, as this is still unresolved :)

3 years 前 | 0

提问


Error in exponential transfer function
I'm having difficulty implementing certain transfer functions in non-state-space form: Eg 1 - exp(-s) or exp(-s) + 1 Basi...

3 years 前 | 2 个回答 | 0

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Cannot save Fig as PNG -- Matlab bug?
Again, PNG does not work. Anyone have further thoughts?

5 years 前 | 0

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