# Christo van Rensburg

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**Content Feed**

Question

Why does my gearbox model not reach a steady-state torque

I setup a 3 DOF two-stage gearbox model in Simulink as follows: Even though I'm applying a constant input torque and a quad...

5 months ago | 0 answers | 0

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answersQuestion

Model Induction Motor with Fan

Good day, I'm looking to model an induction motor with an axial fan attached to its rotor side via a gearbox. At the moment I...

6 months ago | 1 answer | 0

### 1

answerQuestion

Dynamic model of Soft Starter

Hi there everyone, Apologies for asking this question so crude on the forum here, but I'm looking for someone to assist me in...

7 months ago | 0 answers | 0

### 0

answersQuestion

Time dependent matrix entry

Good day, I've got a repeating sequence block with a 1x2-matrix for the durations of the output values. I however need to ch...

7 months ago | 1 answer | 0

### 1

answerQuestion

Implement three-phase delta connection to Induction Motor

Good day everyone, I'm looking to connect my induction motor to a delta connection for three-phase power. Below is how I have...

1 year ago | 1 answer | 0

### 1

answerQuestion

Placement of inertia blocks in system

Good day everyone, I am unsure of where to exactly place inertias for certain components in a system I'd like to simulate. Th...

1 year ago | 0 answers | 0

### 0

answersQuestion

Induction Machine block Rotor velocity error

Good day everyone, I'm modelling a induction machine block in Simulink. When I connect a inertia block to its 'R'-port, the t...

1 year ago | 0 answers | 0

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answersQuestion

Increase parameter value during Simulink simulation

Good day everyone, I'm attempting to gradually increase a value during a simulink simulation. It is a single value that I div...

1 year ago | 0 answers | 0

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answersQuestion

Incorrect velocity of gears in Gearbox

Hi everyone, So I'm a building a single stage gearbox as depicted in the figure below in Simulink. Gear 1 (N = 17 teeth)...

2 years ago | 1 answer | 0

### 1

answerQuestion

Asynchronous Machine Input parameters

Good day everyone In the asynchronous machine block in the Simulink environment, it has four inputs. Three for the three-phas...

2 years ago | 1 answer | 0

### 1

answerQuestion

Multi-stage gearbox Simulink

Good day everyone I'm struggling to assemble a two-stage gearbox using the gear blocks provided by Simulink. The gearbox I am...

2 years ago | 0 answers | 0

### 0

answersQuestion

Error with file density in Simulink

Hi I've created two gears in Autodesk Inventor and am trying to implement them in a 'File Solid' block in Simulink as STEP-f...

2 years ago | 0 answers | 0

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answersQuestion

Error for Gain block in Simulink

Hi there, I'm getting the following error when I try to type "1/(Ih+Ib)" into the parameter value of the Gain block in Simulink....

2 years ago | 0 answers | 0

### 0

answersQuestion

Plot straight line between points

Hi everybody, I'm trying to plot something like this, but just for a number of datapoints. But keep on getting something l...

2 years ago | 2 answers | 0

### 2

answersQuestion

Problem when solving ODEs with ode45

Good day, I have the following code where I simultaneously solve three second-order differential equations defined in 'ode3'. ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Solve coupled 2nd order ODE

Hi guys, I got two second order equations that look like this with force 'F' time dependent: I've tried numerous methods...

2 years ago | 0 answers | 0

### 0

answersQuestion

Time varying force with ode23

Hi there I have the following code: tf = 1; t = linspace(0,3); Ft = zeros(length(t),1); % Here I generate the force ...

2 years ago | 2 answers | 0

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answersQuestion

Increment cell number in xlsread

Hi I'm reading values from a excel spreadsheet with xlsread as such: exp.Vc = xlsread('BD.xlsx', 1, 'E9'); and was won...

2 years ago | 1 answer | 0

### 1

answerQuestion

Linking marker face color to colorbar

Hi How do I link the face color of a marker to a colorbar? I have the following code so far: plot(ones(length(cds_BD),1)*s...

2 years ago | 1 answer | 0

### 1

answerQuestion

Marker Face Colour according to colourbar

Hi there I wish to plot markers on a 2D plot but have the 'MarkerFaceColor' change according to another matrix of values. ...

2 years ago | 0 answers | 0

### 0

answersQuestion

Optimization of model parameters

Hi I'm busy trying to optimize a model that predicts the trajectory of a projectile. I have two parameters that needs to be ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Event function with multiple events

Hi, I'm calling a events function as below for ode45: option2 = odeset('Events', @comp); [time, Y] = ode45(dYdt, tspan, y0...

2 years ago | 1 answer | 0

### 1

answerQuestion

Plot 2D points in 3D space

Hi there So I'm struggling to find a way in which I can represent a 2D trjaectory in a 3D plot. I'm viewing the trajectory fr...

2 years ago | 1 answer | 0

### 1

answerQuestion

Saving animation of projectile motion

Hi there I'm struggling to find a way of saving three projectiles on the same graph as a video file. I have three for loops f...

3 years ago | 2 answers | 0

### 2

answersQuestion

Displaying special characters in dialog box

Hi there I'm trying to display certain special characters in brackets in a dialog box. The common way of doing it doesn't wor...

3 years ago | 1 answer | 0

### 1

answerQuestion

Extract numerical values from structure

Hi I'm taking input parameters from a dialog box which MATLAB then stores in a cell array. I this cell to an structure by using...

3 years ago | 1 answer | 0