Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What is a PLC?PLC stands for “Programmable Logic Controller.” A PLC is a computer specially designed to operate reliably in harsh industrial environments, such as extreme temperatures and wet, dry, and/or dusty conditions. PLCs are used to automate industrial processes such as a manufacturing plant’s assembly line, an ore processing plant, or a wastewater treatment plant.PLCs share many features of the personal computer you have at home. They both have a power supply, a CPU (Central Processing U

What is Steady State Error?Steady-state error is defined as the difference between the desired value and the actual value of a system output in the limit as time goes to infinity (i.e. when the response of the control system has reached steady-state).Steady-state error is a property of the input/output response for a linear system. In general, a good control system will be one that has a low steady-state error.First, we will discuss the steady-state error in a first-order transfer function by an

What is a Transfer Function?A transfer function describes the relationship between the output signal of a control system and the input signal. A block diagram is a visualization of the control system that uses blocks to represent the transfer function and arrows representing the different input and output signals. Transfer Function The transfer function is a convenient representation of a linear time-invariant dynamical system. Mathematically the transfer function is a function of complex v

What is Rise Time?Rise time is defined as the time taken for a signal to cross from a specified low value to a specified high value. In analog and digital electronics, the specified lower value and specified higher value are 10% and 90% of the final or steady-state value. So the rise time is typically defined as how long it takes for a signal to go from 10% to 90% of its final value.The rise time is an essential parameter in analog and digital systems. It describes the time taken for the output