5l.rar - A commonly used control device called a programmable logic controller, or a PLC, is used to read a set of digital and analog inputs, apply a set of logic statements, and generate a set of analog and digital outputs. Using the example in the previous paragraph, the room temperature would be an input to the PLC. The logical statements would compare the setpoint to the input temperature and determine whether more or less heating was necessary to keep the temperature constant. A PLC output would then either open or close the hot water valve, an incremental amount, depending on whether more or less hot water was needed. Larger more complex systems can be controlled by a Distributed Control System (DCS) or SCADA system.,2013-08-16 16:54:36,下载16次
2-Control.rar - For example, heating up the temperature in a room is a process that has the specific, desired outcome to reach and maintain a defined temperature (e.g. 20°C), kept constant over time. Here, the temperature is the controlled variable. At the same time, it is the input variable since it is measured by a thermometer and used to decide whether to heat or not to heat. The desired temperature (20°C) is the setpoint. The state of the heater (e.g. the setting of the valve allowing hot water to flow through it) is called the manipulated variable since it is subject to control action,2013-08-16 16:53:45,下载9次
Downloads.rar - This paper presents a new topology of three-level transformerless photovoltaic (PV) inverter. It consists of three main
circuits they are a pulse driver circuit, a full bridge inverter circuit and a power factor correction circuit that have
functions as production of pulse waves, to develop alternating current (AC) waveform and to stable voltage of PV
array.,2013-08-16 16:51:04,下载31次
COLAS.zip - A system can either be described as a MIMO system, having multiple inputs and outputs, therefore requiring more than one controller or a SISO system, consisting of a single input and single output, hence having only a single controller. Depending on the set-up of the physical (or non-physical) system, adjusting the system s input variable (assuming it is SISO) will affect the operating parameter, otherwise known as the controlled output variable. Upon receiving the error signal that marks the disparity between the desired value (setpoint) and the actual output value, the controller will then attempt to regulate controlled output behaviour. The controller achieves this by either attenuating or amplifying the input signal to the plant so that the output is returned to the setpoint. For example, a simple feedback control system, such as the one shown on the right, will generate an error signal that s mathematically depicted as the difference between the setpoint value and the output value, r-y.,2013-08-16 16:28:41,下载5次
lagrange.rar - Lagrange Interpolation,2013-04-29 18:12:04,下载3次
Code.rar - ACO, Ant Colony Optimization, Traveling Salesman Problem, TSP,2013-04-29 17:13:19,下载6次
Codes.rar - SA, Simulated Annealing, Traveling Salesman Problem,,2013-04-29 17:03:03,下载3次
takmil.zip - System Modeling and Simulation of motor dc - advanced control,2013-04-29 16:53:41,下载4次
CONTROL.rar - process dynamics and control,2013-04-29 16:43:21,下载4次