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I am trying to run matlab /simulink models for PID analysis/design/coding for a project involving nonlinear plant. The baseline model example given by MathWorks people takes 75 min in lap HP SPECTRE laptop( it has more goodies than MathWorks says one needs) just for 1 run...to get a useful product design one will need dozens of trials. Clearly, this is not a practical path. The real system we will extend this work to is 3 times more complex! What computing machine do we look for to speed up this simulation by a factor of 10 if not more? We may have to rent one such machine at the beginning... -robin

IEEE PELS is holding it's second workshop for Design Automation for Power Electronics (DAPE). Started by Alan Mantooth and Miroslav Vasic, this workshop brings together experts to discuss the current and future direction of design automation for developing power electronics based systems. I was fortunate enough to participate last year when it was held during ECCE 2018. Alan and Miroslav did a great job to arrange the all-day session that covered trends and needs in power electronics in the Automotive and Aerospace industries. You can read an article about the workshop published in IEEE PELS magazine. You'll need to log in with your IEEE membership credentials.

It's an exciting time in power electronics with the expansion of electric vehicles, renewable energy, and general drive towards more efficient generation, delivery, and consumption of electricity. Power electronics makes all of this possible. Software is evolving to keep up with this boom to make it easier to develop power electronics-based systems.

This free webinar will be very interesting to people in this community. The professors will discuss the importance of power electronics and modeling and control algorithms in creating a sustainable future.

Be sure to register on the website.

Regards, Samvith

Many microcontroller companies support motor control development using Simulink and Embedded Coder. Here are some interesting reads about some of them. Do you know others? Let us know with your reply.

Analog Devices

NXP

Texas Instruments

Infineon

The new generation of power semiconductors is making it's way into the mainstream. IEEE is hosting a webinar with Brij Singh of John Deere, who will talk about the application of SiC in an inverter for a commercial loader. You can read the abstract and register here.

Also, there is a ouTube video of a hybrid loader shown here Pretty cool.

Solar power is the fastest growing form of renewable energy. One challenge is that is requires sunlight, which means once the sun sets, you don't generate power. Energy storage (large battery packs) is one solution to capturing excess power during daylight for use during night time. Recently, Design News covered Tesla's Megapack energy storage solution. I think this is a great example of what needs to be done, to be sure, other companies are providing similar solutions, like NEC Energy Storage .

These systems have another benefit, too. They are a fast-acting form of dispatchable power , that along with renewable power, can provide stability to the power grid.

Please share your thoughts on grid-level energy storage. Is it a key component or nice to have?

We have a Systems Biology and Biotechnology Specialization on Coursera which has the following specific courses:

1. Introduction to Systems Biology

2. Experimental Methods in Systems Biology

3. Network Analysis in Systems Biology

4. Dynamical Modeling Methods for Systems

5. Integrated Analysis in Systems Biology

6. Systems Biology and Biotechnology Capstone

For "Systems Biology and Biotechnology Capstone", "Dynamical Modeling Methods for Systems", and ":Integrated Analysis in Systems Biology", MATLAB is used for mathematical models and bioinformatics analyses. All assignments with dynamical models are also presented as MATLAB codes and SimBiology Models. The Systems Biology Specialization covers the concepts and methodologies used in systems-level analysis of biomedical systems. Successful participants will learn how to use experimental, computational and mathematical methods in systems biology and how to design practical systems-level frameworks to address questions in a variety of biomedical fields. In the final Capstone Project, students will apply the methods they learned in five courses of specialization to work on a research project.

Here is the link to all of these courses:

https://www.coursera.org/specializations/systems-biology

If you have any question about these courses please let me know.

Iman Tavassoly MD, PhD Icahn School of Medicine at Mount Sinai

can you tell how c2000_host_read_12M.slx is working and subsystems of it. its not discussed in the video morever how you ran the model f28379 in ccs and host in normal.? can you explain like step by step i tried same but got error n error occurred while running the simulation and the simulation was terminated Caused by: Error evaluating registered method 'Outputs' of MATLAB S-Function 'sserialsb' in 'online_tun/Serial Send/Serial Send'. FWRITE cannot be called. The FlowControl property is set to 'hardware' and the Clear To Send (CTS) pin is low. This could indicate that the serial device may not be turned on, may not be connected, or does not use hardware handshaking.

Hello, I want to know if it is possible to create a signal from vectors in simulink, and in what way. Thank you very much in advance

My linear algebra book makes me solve a matrix with the help of a computer. When I tried to solve linear equations with an infinite number of solutions, Mathlab just makes some or all the entries zero. For example, with the set [1 2;2 4]=[0;0] it just gives back [0 0] for an answer. Is there a way for it to give back a parametrization of some kind?

I'm working on a simulink design, using MATLAB function. By the benefit of the MATLAB function, I got 1x10 array of which values are like [1 0 0 1 0 0 1 0 0 0], I want these values to be sent to the MOSFET's gate sequentially. I thought it would have been done with 'For loop' to send it sequentially but I found out that's not possible since it's just sensed the latest column's value so that I just saw 0 in my scope. Any idea how to do it properly? Below you can see the simulink design.

Hello: your help is greatly appreciated, I am trying to solve the following pde numerically with ode45 (if possible). There are three equations in total. I keep getting an error. know parameters: v, D(j), KL(j), cs(j) The IC and BC are provided in the m.file. pde:

    % code
% Initial, final values of independent variable
tspan = [0 7];
P=1, F2=2, F3=3;
c_initial_1= zeros(N+1,1);
c_initial_2= zeros(N+1,1);
c_initial_3= zeros(N+1,1)
if t == 0
c_initial_2(1,2) = cs(2)
c_initial_3(1,3) = cs(3)
c_initial_1(1,1) = cinj
end
  [t, c, kF2, kF3, kP, n2, m2, n3, m3, q, r] = ode45(@ode, tspan, c_initial_1,c_initial_2, c_initial_3);
function [dcdt] = ode(t, c, k2, k3, kP, n2, m2, n3, m3, q, r)
global N dx dxs
dcdt = zeros(N,N)
for i = 1:N
    for j = P:F3 % j== 1:3 1=persulfate, 2 Fraction 2, and 3 Fraction 3
        if j == 1
            epsilon = 1
        else 
            epsilon = 0
        end 
        dcdt(i, j) = (-v/(2*dx))*(c(i+1,j)-c(i-1,j))+(D(j)/dxs)*(c(i+1,j)...
            -2*c(i,j)-c(i-1,j))+(1-epsilon)*kL(j)*(cs(j)-c(i,j))- ...
            (1-epsilon)*k(j)*(c(i,j)^n(j)*(c(i,1)^m(j))- ...
            epsilon*kP*(c(i,j+epsilon)+c(i,j+2*epsilon))^q *c(i,1)^r
        dcdt(N+2,j) = dcdt(N-1,j)
        dcdt(0,j) = dcdt(2,j)
        if t == 0
            dcdt(1,P) = cinj 
        end
    end
end
end
end

dc(i,j)/dt=-v*(dc(i,j)/dx)+D(j)*d/dx(dc(i,j)/dx)+(1-epsilon)*kL(j)*(cs(j)-c(i,j))+(1-epsilon)*k(j)*c(i,j)^n(j) * c(i,1)^m(j) + epsilon*kp*[c(i,j+epsilon)+c(i,j+2*epsilon)]^r * c(i,1)^q

Jacky Wong
Jacky Wong
Last activity on 19 Jul 2019

Single Phase Transformator Simulation

Good day everyone,

I'm trying to simulate a single phase transformator by using Simulink. I've got the current values: R1 = 3 Ohm R2 = 0.03 Ohm X1 = 6.5 Ohm X2 = 0.07 Ohm Rc = 100k Ohm Xm = 15k Ohm f = 60 Hz Uprim = 2400V Usec = 240V S = 29kVA cos Phi = 0.8

And I've made the current calculations: L1 = X1/2*pi*f = 17,24 mH L2 = X2/2*pi*f = 185.68 uH Lm = Xm/2*pi*f = 39.79 H S = Urms*Irms => Irms = 120.83 A P = Urms*Irms*cos Phi = 23200 W Q = Urms*Irms*sin Phi = 17400 VAr Q>0 so Q = ohms-inductive => QL = 17400, QC = 0

I've made the current circuit and simulated it, but somehow my secondairy output voltage is only at 225Vrms. Can someone explain to me why that's the case? Did do something wrong in my calculations or in my simulation?

i am confused about how to run as a closed loop. how to do closed-loop control of phase shift using matlab. i am using c2000 embedded by Matlab.

Hi, I am intrigued by the idea of using the simbiology stochastic solvers for a project that I have so far coded in the idnlgrey framawork.

Some of the ODE right hand sides (ionic fluxes) in my model are given via fitobjects.

My question is: can I use a fit object in simbiology? Or should I figure out an analytical form and use it as a custom reaction rate?

Thanks, Francesco

On using Simbiology, I am realizing how wonderful it is! It is equivalent and infact better than much commercial software available in the market for hefty prices (not to name anyone in purpose). Moreover, the product is backed up by the world leaders in software engineering - MATLAB (which gives more confidence to the product). It would be very helpful if someone can share the list or some of the PubMed indexed publication on population pharmacokinetics in which Simbiology is utilized for modeling and computation.

Identification of model (one compartment, two compartments or three compartments) which a drug follows is an important step before population pharmacokinetic modeling. I am aware that the graph between the concentration vs time, gives an idea of the number of compartment a drug follows.

But is there a standard way to explore and determine the number of compartment a drug follows in a more objective manner. This would also be helpful to determine the model in which the data needs to be fit. In addition, a note on determining the order of reaction is also welcomed and would make the discussion complete.