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Sign convention for enforcing positive definite matrix P ( 𝑃 ⪰ 𝜀 𝐼 ) using lmiterm in MATLAB LMI Toolbox (LMI)
Hi @Manish Kumar I believe I made an error in my previous comment from another thread. LMIs appear deceptively simple but can b...

7개월 전 | 0

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Common Lyapunov matrix from T–S fuzzy LMI differs from published result (scaling issue?)
Hi @Manish Kumar Q1: Is the difference between the two matrices simply due to scaling / non-uniqueness of LMI feasibility solut...

8개월 전 | 0

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convolution integral with ode45
In the past few days, I have been closely following the discussions on this intriguing topic of solving the integro-differential...

8개월 전 | 0

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Reinforcement learning to tune a PI controller
Hi @yiwei If you scroll down to the "Validate Trained Agent" section, you will observe that the RL agent returns a set of fixed...

8개월 전 | 0

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getting 16 outputs instead of 4 what to do?
Hi @Divya Gorrela Your input data is likely a vector consisting of four components. In the default mode, the Gain blocks perfor...

8개월 전 | 1

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PID control simulation code improvement
Hi @Cesar In addition to @Mathieu NOE's valuable contributions regarding realistic actuator saturation and overshoot reduction,...

8개월 전 | 0

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PID control simulation code improvement
Hi @Cesar My simulation results look almost the same as @Mathieu NOE's, but I use ode45 instead of discrete-time propagation. ...

8개월 전 | 0

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How so I use the Reinforcement Learning toolbox to train a Soft robot
When decided to use reinforcement learning to train a robot, it doesn't matter whether the robot is hard (rigid-body) or soft (f...

8개월 전 | 0

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PID controller for a car suspension system not functioning.
Hi @Bryan Shivram I am not familiar with your MIMO quarter car suspension system, but I'd advise conducting a test in MATLAB be...

8개월 전 | 0

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LQR Controller for Nonlinear System Tracking with Time-Varying Linearization
Hi @boutegui So you want to run ode45 in a loop like this: at the start of each time step, inject the linearized state-space mo...

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Pulling stuck vehicle with another vehicle using 1 pulley
Hi @Kristián Describing the motion of the pulley system usually requires the mathematical model, specifically the differential ...

8개월 전 | 0

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Prescribed time disturbance observer does not estimate in prescribed settling time.
Hi @controlEE To be honest, I have been studying the sliding mode disturbance observer over the past few days. There are still ...

8개월 전 | 0

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Deadbeat control Space-State System
A deadbeat control system refers to the design of a controller that enables the system to produce a response resembling a deadbe...

8개월 전 | 0

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Using symbolic syms inside a Simulink Function — Error: Symbolic not allowed
Hi @boutegui Before modeling the control system in Simulink, I advise that you first understand the underlying mathematical des...

8개월 전 | 1

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How can i imply multiple different temperatures to my control circuit in Simulink? (+Feedforward)
Hi @Teo I'm not familiar with how your thermal system runs. However, if you have derived the mathematical model, you can constr...

9개월 전 | 0

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How to integrate a control system by ode45 with PID control input ?
Hi @Chuguang Pan Perhaps you can try this approach. G = tf(1, [1, 0, 0]); opt = pidtuneOptions('DesignFocus', 'disturbance-...

9개월 전 | 1

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Prescribed time disturbance observer does not estimate in prescribed settling time.
Hi @controlEE I admit that I have difficulty understanding the mathematical notations and stability proof associated with the p...

9개월 전 | 0

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Help needed to set proper curve fitting constraints for a comprehensive solution for fitting data to custom models
Hi @sxh The Witch of Agnesi provides a very good fit for the curve, although your original "witch" function needs proper center...

9개월 전 | 1

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Help needed to set proper curve fitting constraints for a comprehensive solution for fitting data to custom models
Hi @sxh It appears you used the Witch of Agnesi, a well-known bell-shaped function (technically, the derivative of the arctange...

9개월 전 | 1

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getting error in fuzzy inference system & gain block
Hi @kirankumar I have not tested the Simulink model because your code for generating the Sugeno fuzzy system contained several ...

9개월 전 | 0

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Can I map a torque input to a braking pressure?
Hi @Leonardo I cannot provide the physical explanation of how the student author derived the model. Mathematically, the 1st-ord...

9개월 전 | 0

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Can MATLAB ANFIS handle multiple outputs (n responses) from two inputs in a single model, or must separate ANFIS models be built for each output?
Hi @Girinath Fuzzy systems can handle multiple‑input multiple‑output (MIMO) processes, provided the then‑side outputs share the...

9개월 전 | 0

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Problem in plotting the system of fractional equations
Hi @Amal Matrafi, Have you considered using the Oustaloup recursive approximation to simulate fractional differential equation...

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Extracting coefficients from symbolic expression
Hi @Ali Kiral The expression of the determinant is very long. Perhaps you can try this approach. syms P121 P131 P151 syms P12...

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How to design controller for coupled 2 input 2 output system?
Hi @Eric Perhaps you can try this control architecture. With this approach, the PID controllers can be designed for plants G11 ...

9개월 전 | 0

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How do I plot a graph with the grid for trig functions with 0 ≤ x ≤ 2π
Hi @Sean You have likely not yet looked up the plot() function. There are several examples. help plot

9개월 전 | 0

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I want to ask about PSS and SSSC optimization for grid with DFIG
Hi @Thuong When the response is stable but exhibits a DC offset, compensating the bias with integral action on the error signal...

9개월 전 | 0

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Infinite response. While using it with discrete vehicle model.
Hi @Sebastian Assuming the physical modeling blocks were constructed correctly in Simulink, use knowledge of 4DOF vehicle dynam...

9개월 전 | 0

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fuzzy logic tool not installed?
Hi @muhammad If you are sure that the Fuzzy Logic Toolbox is installed but its functions are inaccessible, the issue is most li...

9개월 전 | 0

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Layer-structure prediction of fitrnet not yielding same answer as predict(Model,input)
Hi @Kevin If you want to use the satisfactorily trained neural network models with standardized inputs, you will need to apply ...

9개월 전 | 1