Community Profile # Dingyu Xue

### Northeastern Univ

13 total contributions since 2002

Professor, Control Engineering
Faculty of Information Science and Engineering

Professional Interests: control theory, simulation, MATLAB in education

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Question

Is this a bug in double precision data type?
Try this n=7; eye(n)*inf+ones(n) I got ans = Inf NaN NaN NaN NaN NaN NaN NaN Inf NaN NaN NaN ...

1 year ago | 1 answer | 0

### 1

Question

Is it possible to convert the whole Simulink model into a state space one?
Dear friends In fact I am thinking of simulate a system, whose terminal information at t_k is known, and the information at t_0...

1 year ago | 1 answer | 0

### 1

Question

an error in new versions? triognometric function of A*t
Please run the following code in MATLAB R2017a A1=simplify(A1), A2=simplify(A2) A=[-7,2,0,-1; 1,-4,2,1; 2,-1,-6,-1; -1,-...

3 years ago | 1 answer | 0

### 1

Question

A bug im simplify in the new Symbolic Toolbox?
Dear developpers Recently I run my codes in my book in the new versions of MATLAB if true A=[-7,2,0,-1; 1,-4,2,1; 2,-1,-6...

3 years ago | 2 answers | 0

### 2

Submitted

FOTF Toolbox
A collection of MATLAB files for fractional calculus and fractional-order control

Question

problems in accuracy assessment
Dear friends I tried continued fractiona approximation to pi, and got the following rational approximation 124496998874578...

6 years ago | 1 answer | 1

### 1

Question

A possible bug in symbolic limit function regarding complex entities?
The code I tried >> syms z; F=1/(z-1)^2+3/(z-1)+5/(z+1i)+6/(z-1i)^2+1/(z-2)^2+1/(z-2) % original function, f1=(z...

6 years ago | 0 answers | 1

### 0

Question

Dear colleagues Probably from MATLAB 2012b, the exporting of Simulink to eps file is changed. The following command is OK bor e...

7 years ago | 0 answers | 0

### 0

Submitted

OptimPID is a MATLAB based interface and it can be used to optimize PID parameters Submitted

graphics_tools
A graphics toolkit, Graf_Tool() which can be used to process and edit graphics.

Submitted

CtrlLAB
CtrlLAB provides a graphical interface to perform feedback system analysis and design.

Submitted

Feedback Control Systems
Companion Software 