# Engineering and Technology

Articles and tutorials about engineering and technology
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Proportional (P) controller
A proportional controller (P-controller) is a type of feedback control system that adjusts the control signal of a system u(t) in proportion to the error e(t), calculated between the setpoint and the actual output y(t). This type of controller is commonly used in closed-loop control systems to ensure that the output of the system remains as close as possible to the setpoint.
Difference between iron and steel
The main difference between iron and steel is that iron is a metal that occurs naturally on Earth, whereas steel is a man-made alloy which contains mainly iron and carbon and some small quantities of other metals such as nickel and chromium.
Discretizing a transfer function from s-domain (continuous) to z-domain (discrete)
Modeling and simulation of an automotive suspension
In this article we are going to determine the mathematical model (set of differential equations) of a simplified half-car model that includes an independent front and rear vertical suspension. The model will have two degrees of freedom: body pitch and vertical bounce. This model can be used as a starting point for investigating vehicle ride characteristics, having as perturbations road bumps and body pitch due to acceleration/deceleration events.
How to integrate C code in Xcos
C code is widely used in engineering applications, the vast majority of electronic control devices have software written in C programming language.
Quarter car suspension model transfer function
How to calculate the transfer function of a quarter-car suspension model
Mathematical models and simulation of electrical systems
Mathematical modeling and simulation for RL, RC and RLC circuits
Rate (gradient) limiter – Xcos modeling and simulation
Rate (gradient) limiter – Xcos modeling and simulation
What is free, forced and total system response
What is free, forced and total system response
On-off control system
Transfer function algebra
Transfer function algebra
The principle of superposition
The principle of superposition
Xcos tutorial – Modeling and simulation of a counter/timer
Xcos tutorial – Modeling and simulation of a counter/timer
Xcos tutorial – Simple demo
Xcos tutorial – Simple demo
Modeling and simulation of nonlinear magnetic hysteresis
Modeling and simulation of nonlinear magnetic hysteresis