# Dominik Hiltbrunner

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**Content Feed**

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How to convert the integral of a long and complicated symbolic expression into a function file

I use Matlab's built-in matlabFunction() to convert symbolic expressions into optimized function handles or files. Consider the...

10 months ago | 0 answers | 0

### 0

answersQuestion

Receiving "Error using griddedInterpolant. Grid arrays must have NDGRID structure." error when interpolating 3D data.

Dear community I am using the griddedInterpolant() function to fit N-D data. In my particular case, the input has dimension 19x...

11 months ago | 1 answer | 0

### 1

answerQuestion

Why is the cubic Spline Interpolation wiggly in flat areas?

Dear community I am using Matlab's griddedInterpolant() to fit 2-D data with non-uniform samples. Please consider the following...

11 months ago | 1 answer | 0

### 1

answerTroubles with counter variables and file writings in parallelized for loop

I want to answer my own question according to the answers I got. The DataQueue can be used to solve all 3 problems. My approa...

1 year ago | 0

Question

Troubles with counter variables and file writings in parallelized for loop

Dear community I am currently trying to speed up the computation of a nested for-loop. To do so, I want to use the parallel com...

1 year ago | 2 answers | 0

### 2

answersQuestion

Matlab is unable to evaluate very a very long expression

Attached to this post is a text file containing a very long expression. I want to evaluate this expression numerically in a Mat...

1 year ago | 1 answer | 1

### 1

answerQuestion

How to fit a function to 2D array when some parts of the underlaying function are known?

I have an unknown function Z=f(X,Y) where a subset of Z-values are known for a certain range of X and Y values. Consider the fo...

1 year ago | 1 answer | 0

### 1

answerQuestion

Simulink's fixed-point tools ignores saturation limits during range collection

Hello community I'm using an iterative fixed-point conversion to optimize my Simulink model. When collecting the signal ranges ...

2 years ago | 1 answer | 0

### 1

answerQuestion

HDL Coder: How to create a resettable delay that triggers on rising edge

Hello Community I'm trying to implement a limited counter which has a variable upper limit, i.e. the upper limit is given by a ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Im confused by Matlab's dontinuous-to-discrete conversion methods and how they work

Hello community Recently, I have been working a lot with the transformation from the s-domain to the z-somain using Matlab's c2...

2 years ago | 1 answer | 1

### 1

answerQuestion

How to prevent override with double data type on certain block when deriving simulation ranges with Fixed-point Tool

Hello Community I'm using Simulink's Fixed-point Tool to optimize my design. There is a manually optimized part in my design, i...

2 years ago | 2 answers | 0

### 2

answersHow to implement a 3D Lookup Table that can be converted with HDL Coder?

Hello Kiran Kintali Thank you for your answer. I do fixed-point arithmetic. The integer and fraction lenght are set by the...

2 years ago | 0

Question

How to implement a 3D Lookup Table that can be converted with HDL Coder?

Hello Community I want to implement a non-linear function with 3 variables, i.e. f(x,y,z), in Simulink and convert it to VHDL c...

2 years ago | 3 answers | 0

### 3

answersHow to use the fixed-point designer properly - several issues.

Hello Kiran Kintali Thank you for that link, it is indeed a good source with interesting topics. However, it did not answer m...

2 years ago | 0

Question

How to use the fixed-point designer properly - several issues.

Hello Community I have a Simulink design which is supposed to be implemented on a FPGA. Currently, the design runs with identic...

2 years ago | 3 answers | 0

### 3

answersQuestion

I cannot use the Fixed-point Tool when using dual-port RAMs in my design - strange bug

Hello Community I have a Simulink design which requires quite a large word lenght (64bit signed fixed-point) to run without ove...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to optimize multiplications with hdl coder

Hello community I'm using Simulink to generate VHDL code. The system runs on 2.5 MHz sample rate and is supposed to run on a ta...

2 years ago | 1 answer | 0

### 1

answerQuestion

How do I convert binary strings from a text file to fixpoint numbers?

I have a text file in which each row contains one 60-bit number representing a signed fixed point number with 44-bit fraction, i...

2 years ago | 1 answer | 0

### 1

answerQuestion

Why is this simple Simulink System unstable for low sampling frequencies?

Hello Community! I have a simple Simulink System which appears to be unstable for low sampling rates. The model looks like thi...

2 years ago | 0 answers | 0

### 0

answersShow Simulink simulation progess inside Matlab skript without too much performance loss.

Hello Fangjun Jiang Thank you for your answer. I've already tried setting the sampling time much higher for this block, howeve...

2 years ago | 0

Question

Show Simulink simulation progess inside Matlab skript without too much performance loss.

Hello Community I have a large Simulnk model which takes quite long to run (+/- 30min). Now I would like to set parameters and...

2 years ago | 2 answers | 0