I am solving a large scale optimization problem using Python GEKKO. Some variables of the model have to not change during the optimization process. So I was wondering what is the difference between using the m.fix GEKKO method on the variables (m.Var) that I want to be constant, or replacing the variables with constants declared with m.Const. I use IMODE
Tag: gekko
Get variable values at each iteration of GEKKO optimization
I would like to get the value of the variables at each iteration of the optimization process when using Python GEKKO. For example, the following code from the documentation (https://gekko.readthedocs.io/en/latest/quick_start.html#example) solves problem HS71: The output displayed in the console is the following: This includes the value of the objective function at each iteration, but I would also like to get
mixed integer programming optimization
I am trying to understand how gekko and its different types of custom variables work. So I wrote a very simple optimization problem, but it won’t find the optimal solution, at least this is what i think the error message means. The code is a simple set switch combination (braco_gas and braco_eh, both binaries) multiplied by some weights (vazao and
Constrained Multi-Linear Regression using Gekko
I have a multilinear regression problem where I have the prior information about the range of the output (dependent variable y) – The prediction must always lie in that range. I want to find the coefficients (upper and lower bound) of each feature (independent variables) in order to make the linear regression model restricted to the desired range of output.
GEKKO variable update in real time
How do I need to setup m.time and update the initial conditions if I want to use GEKKO in an online simulation that updates every second? I have tried: but it doesn’t seem to update the values. I’m using IMODE = 4 This is just a dynamic simulation application. No control at the moment. Answer Gekko manages the initial conditions
GEKKO. X value does not go beyond certain point
I need to solve 1D plane flight optimal control problem. I have a plane that is 1000m high. I need it to travel certain distance (x) forward along x-axis while minimizing fuel consumption. And when it achieves travels that distance x I need program to stop. This function controls it: m.Equation(x*final<=1500). And for some reason during the simulation my x
How could constraints be dynamically constructed in gekko?
I’m a newbie in gekko, and want to use it in my linear programming problems. I have variable names, costs, minimum and maximum bounds in separate dictionaries (my_vars, Cost, Min and Max) with variable names as their keys, and the objective is minimizing total cost with determining the amount of variables satisfying the constraints. I did as below; Here I’d
Are there IEC 61131 / IEC 61499 PLC function blocks that use OPA UA to transport data?
I have a machine learning and advanced control application in Python (TensorFlow + Gekko) that I need to integrate with a Programmable Logic Controller (PLC) that provides the data acquisition and final element control. Can I use a rack-mounted Linux (preferred) or Windows Server as the computational engine, with data transport through OPC-UA (OLE for Process Control – Universal Architecture)?