MaplePrimes - MapleSim 2016 Posts and Questions

Error in Battery operated 4 wheeled driven electric vehicle

pandiarajg — Mon, 22 Jun 2020 06:10:57 Z

Hi all,

I am new to maplesim and trying to learn it.

While simulation of the battery operated 4 wheeled driven electric vehicle

it tells can't find solution.

Same time if i connect a fixed reference all four wheels are running (same place) but not moving since the frame fixed.

HELP ME TO SOLVE THIS.

thank you..

CAD Toolbox included in the students version?

heisenberg_px — Mon, 13 Nov 2017 11:24:16 Z

Hello,

I would like to ask, if somebody knows whether the CAD Toolbox is included in the students version and if not how much is it?

Thanks!
Fabian

MapleSim 2016 and sampled call to external function

fnicolo — Thu, 12 Oct 2017 10:44:25 Z

Hello,

I'm writting a Modelica External component which use a C function, like this :

model SAMS.BlockUdpReceiver
    parameter Integer relativeSockId = 0 "Relative socket id (0..10)";
    parameter Integer stateUdp = 2 "state of receiver 1=receive data from udp ; 2=state from recorder config file";
    parameter Real step_time = 0.05 "sample time in second";
    parameter Integer nbDouble = 3 "number of double value to send";

    function udpReceiveDataMapleSim
        input Integer relativeSockId;
        input Integer stateUdp;
        input Real step_time;
        input Real currentTime;
        input Integer nbDouble;
        output Real dataToReceived[nbDouble];
    external "C"udpReceiveDataMapleSim(SAMS.BlockUdpReceiver.udpReceiveDataMapleSim.relativeSockId, SAMS.BlockUdpReceiver.udpReceiveDataMapleSim.stateUdp, SAMS.BlockUdpReceiver.udpReceiveDataMapleSim.step_time, SAMS.BlockUdpReceiver.udpReceiveDataMapleSim.currentTime, SAMS.BlockUdpReceiver.udpReceiveDataMapleSim.nbDouble, SAMS.BlockUdpReceiver.udpReceiveDataMapleSim.dataToReceived)
            annotation (
                Library = "F:/SAMSSVN/workspaceMaple/SamsLibrary/x64/Debug/SamsDll.dll",
                __Maplesoft_callconv = "stdcall");
    end udpReceiveDataMapleSim;

    Modelica.Blocks.Interfaces.RealOutput dataReceived[nbDouble] annotation (Placement(
        visible = true,
        transformation(
            origin = {120, 50},
            extent = {
                {-20, -20},
                {20, 20}},
            rotation = 0),
        iconTransformation(
            origin = {110, 50},
            extent = {
                {-10, -10},
                {10, 10}},
            rotation = 0)));
equation
    when {initial(), sample(0, step_time)} then
        dataReceived = udpReceiveDataMapleSim(relativeSockId, stateUdp, step_time, time, nbDouble);
    end when;

    annotation (
        Diagram(coordinateSystem(extent = {
            {-100, -100},
            {100, 100}})),
        Icon,
        experiment(__Maplesoft_engine = 2),
        __Maplesoft_none);
end SAMS.BlockUdpReceiver;

I want MapleSim to call C function at initial() time and with a sampled period of step_time.

But, the function is called at each simulation step (here at 0.4 ms)

for demonstrate it, I print a log file each time the function is called.
this is a part of the result :

id Receiver =11 ; CurrentTime = 0.151200 while t_step=0.002000
id Receiver =11 ; CurrentTime = 0.151200 while t_step=0.002000
id Receiver =11 ; CurrentTime = 0.151200 while t_step=0.002000

id Receiver =11 ; CurrentTime = 0.151600 while t_step=0.002000
id Receiver =11 ; CurrentTime = 0.151600 while t_step=0.002000
id Receiver =11 ; CurrentTime = 0.151600 while t_step=0.002000

id Receiver =11 ; CurrentTime = 0.152000 while t_step=0.002000
id Receiver =11 ; CurrentTime = 0.152000 while t_step=0.002000
id Receiver =11 ; CurrentTime = 0.152000 while t_step=0.002000

Why C function is called so many time (3 times in a step), and why is called for each simulation step (0.4ms) instead of each 2 ms ?

Maybe I make a bug in my Modelica code ? or not ?

thanks for any reply.

Constraints on Revolute Joints

onder — Fri, 23 Jun 2017 14:29:05 Z

Hello,

I have an industrial robot model and I need to define constraints for the revolute joints. For example, R2 joint is only allowed to move between -165 to 165 degrees. Could you please tell me how I can impose these constraints?

Thank you.

Önder

New MapleSim release

eithne — Tue, 17 Jan 2017 21:41:40 Z

We have just released a major update to MapleSim and the MapleSim family of products. This update includes significant enhancements in the areas of model development and toolchain connectivity, including:

Live simulations let you see results as the simulation is running, so you can track progress and react to problems immediately.
A new 3-D overlay option lets you easily compare simulation visualizations by overlaying one visualization on top of another
Tools for revision control enable a structured approach to managing and tracking changes to your model, making it easier to manage projects when multiple engineers are working on the same model and reducing development risk.
MapleSim now supports direct import of models created in other FMI-compatible software, providing even greater cross-tool compatibility and opportunities for co-simulation.
The MapleSim Connector, for connectivity with Simulink®, and the MapleSim Connector for FMI, for exporting MapleSim models to other FMI-compatible tools, have been expanded to allow you to explore simulation results involving exported MapleSim models from within MapleSim, even though the simulation was done in the target tool.

And more! See What’s New in MapleSim for more information about these and other improvements in MapleSim.

This update is being distributed through the automatic Check for Updates system, and is also available from our website. See the MapleSim 2016.2 downloads page for details on obtaining this update.

eithne

Maplesim Robot Modelling

calikusu01 — Mon, 21 Nov 2016 20:22:31 Z

Hello guys..

I am a master student and I am interested in modelling of six dof industrial robots. in this study, ı firtsly import autocad model into Maplesim and add revolute jont between each two link. I want to coriolisis matrix from the model with inertia matriix . I wait your helping and thanks for your interest