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Yoshi Minagawa

MathWorks

Last seen: 6 dagen ago Active since 2021

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Solve a System of Linear Equations
*Example*: If a system of linear equations in _x&#8321_ and _x&#8322_ is: 2 _x₁_ + _x₂_ = 2 _x₁...

3 maanden ago

Solved


Find the Oldest Person in a Room
Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

3 maanden ago

Solved


Convert from Fahrenheit to Celsius
Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...

3 maanden ago

Solved


Calculate Amount of Cake Frosting
Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

3 maanden ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

3 maanden ago

Answered
how to add rising edge clk like this in stateflow?
Hi Le, You can add the rising edge port on chart block as below. 1. Set "input event" to the variable type 2. Open "Proper...

3 maanden ago | 0

Answered
How to adapt a Field Weakening control in the simulink model in a PMSM system?
Hi Varun, Maybe the sample model shown below is useful for you. In the Simscape Electrical library, there is "PMSM Field-Weaken...

3 maanden ago | 0

Answered
Is there any simple PI controller for Id and Iq current for current control of PMSM motor
Hi Varun, How about the sample model below. It is not so simple model but you can see how to use "Current Controller Block" and...

3 maanden ago | 0

Answered
Error when using spice model for MOSFET for Basic Buck w/ PI control
Hi Christine, When this error occurs, it maybe is valid to enable the filter of Simulink-PS Converter block. By enabling the fi...

3 maanden ago | 0

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SIMULINK Blue and black components
Hi LightFury, They are the blocks for electrical modeling but different domain blocks, that why you can't connent them directry...

3 maanden ago | 1

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raspberrypi_modbus_masterのモデルをコマンドで起動しようとしてもエラーが出てしまう
小杉様 ご質問ありがとうございます. おそらく、コマンド中のシングルクオーテーション、もしくは括弧が全角となっているために生じるエラーかと思われます. 下記のように半角のものに変更した状態でお試しください. 正:open_system('r...

3 maanden ago | 0

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Answered
simulink上でのラズパイとカメラ動作について
AK様 ご質問頂きありがとうございます. ハードウェアとの接続が正しく確立できていない可能性があります.下記の図を参考に正しいIPアドレスが設定されていることなどをご確認頂けますでしょうか. また、シミュレーション実行ボタンではなく、「監視と調整...

3 maanden ago | 0

Answered
What environment temperature should I collect the step response data under?thanks.
Hi Shawn, I understood that this problem is changing plant dynamics due to plant's temperature and it makes the control difficu...

3 maanden ago | 0

Answered
Simulink vs Stateflow application for sensor
Hi Hidd, Using Stateflow, you can make Sequence control very easily. (for example, schedulers, fault management systems, and su...

3 maanden ago | 0

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Integration step Issue in Simulink execution
Hi Hugh, Your simulink model might be stiff-model. The stiff model is a difficult model to simulate and the calculation speed o...

3 maanden ago | 0

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How to split a line in Simulink?
Hi Moritz, I don't know how to delete only the part of the signal line as you mentioned. But you can do the similar thing by th...

3 maanden ago | 0

Answered
How to change evaluation time of a Matlab Function in Simulink
Hi Fernando, Although I didn't see your model and so I couldn't find the reason of the problem, I described the tips for this p...

3 maanden ago | 0

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How Can I add feedbacks on control inverted pendulum with LQR?
Hi Oguzhan, The value actually measured and obtained corresponds to Y. Therefore, if you get position and velocity values of th...

4 maanden ago | 0

Answered
How to use stateflow inside a simulink closed loop?
Hi Moritz, I understood that your question is about the cause of the difference output between the two logics in attached model...

4 maanden ago | 1

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The linearization input/output port specification of the 'statespace_compensation/Bode Plot' block resulted in linear system with a value of zero.
Hi Vasilica, The main reason of this warning is that this model has discontinuous non-linearity. In making not only bode-plot b...

4 maanden ago | 0

Answered
Model a Torque converter from fundamental equations using standard simulink blocks
Hi Aditya, I think the demo model of "sf_car" will be helpful. (Please enter "sf_car" in the command window.) There is a torque...

4 maanden ago | 0

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Does anyone know how to fix this?
Hi Tony, It seems that different data from expectedis appeared during "first step" in simulation. (Models that do not require c...

4 maanden ago | 0

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How to build a delta-connected PMSM simulink model or what's the output of PM Synchronous Motor mean 'R' 'C'?
Hello 英奇, Thank you for your asking. First, you should convert R and L in the delta connection to the those in the Y connect...

5 maanden ago | 0

Answered
regenerate braking of bldc motor
Hello Muhammad, Thank you for asking. For modeling regenerative braking circuit for BLDC motor, the following link (sample ...

5 maanden ago | 0

Answered
May I know how to solve this error in Simulink?
Please refer to the link below. You could get a hint. https://jp.mathworks.com/matlabcentral/answers/326834-why-am-i-getting-a...

5 maanden ago | 0

Answered
Simulinkのエラー(line 146)について
エラー表示どおりであれば、simulinkモデル名がMATLABで使用できる命名規則に準じてないことが原因かもしれません. MATLABでは変数名は下記のルールに準じる必要があります 1 ~ 63 文字以内 アルファベット、数値、及びアンダースコアの...

5 maanden ago | 0

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Spectrum Analyzer sample rate.
Hello Paul, Please check the signal type of inport signal connected to Spectrum Analyzer Block. It must be a discrete signal. I...

5 maanden ago | 0

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Problem with control of IPMSM
Hello Meikel, Thank you for the question. I checked your model. I didn't understand whole of this model, but I found a part th...

5 maanden ago | 1

Answered
ブラシレスモーターを発電機として利用するシミュレーションはできるか
はい、可能です. ご参考に、簡単な例としてBLDCモーターと三相整流器を用いた電力回生のモデルを作成してみました. モデル右側より、Ideal Angular Velocity Sourceブロックを用いてBLDCモーターを1000rpmで回転する...

5 maanden ago | 0

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状態フィードバックを用いた安定化
通常、極配置法で複数の極を移動させる場合、移動先の極は重複しない値を指定する必要があります.これは以下のドキュメントの注意の箇所にも記載があります. https://jp.mathworks.com/help/control/getstart/pole-...

5 maanden ago | 0

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