Archive for April 21st, 2008
A computer is made up of four basic functional units: the central processing unit (CPU), memory, input, and output (I/O). The central processing unit does the actual computing and is composed of two subparts: the arithmetic logic unit and control sections Figure 2. The arithmetic logic unit (ALU) performs the actual numerical and logic calculations [...]
The digital integrated circuit (IC) called a microprocessor [Figure 1(a)], has ushered in a whole new era for control systems electronics. This revolution has occurred because the microprocessor brings the flexibility of program control and the computational power of a computer to bear on any problem. Automatic control applications are particularly well suited to take [...]
Motion control is a broad term used to describe an open-loop or closed-loop electromechanical system wherein things are moving. Such a system typically includes a motor, mechanical parts that move, and (in many cases) feedback sensor(s). Automatic assembling machines, industrial robots, and numerical control machines are examples.
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A sequentially controlled system controls a process that is defined as a series of tasks to be performed—that is, a sequence of operations, one after the other. Each operation in the sequence is performed either for a certain amount of time, in which case it is time-driven, or until the task is finished (as indicated [...]
Process Control
Process control refers to a control system that oversees some industrial process so that a uniform, correct output is maintained. It does this by monitoring and adjusting the control parameters (such as temperature or flow rate) to ensure that the output product remains as it should.
Figure 7 A closed-loop oven-heating system.
The classic example of [...]
In an analog control system, the controller consists of traditional analog devices and circuits, that is, linear amplifiers. The first control systems were analog because it was the only available technology. In the analog control system, any change in either set point or feedback is sensed immediately, and the amplifiers adjust their output (to the [...]
Physically, a control system is a collection of components and circuits connected together to perform a useful function. Each component in the system converts energy from one form to another; for example, we might think of a temperature sensor as converting degrees to volts or a motor as converting volts to revolutions per minute. To [...]
INTRODUCTION
A control system is a collection of components working together under the direction of some machine intelligence. In most cases, electronic circuits provide the intelligence, and electromechanical components such as sensors and motors provide the interface to the physical world. A good example is the modern automobile. Various sensors supply the on-board computer with information [...]
Pengertian Perawatan Luka Perinium
Perawatan adalah proses pemenuhan kebutuhan dasar manusia (biologis, psikologis, sosial dan spiritual) dalam rentang sakit sampai dengan sehat (Aziz, 2004). Perineum adalah daerah antara kedua belah paha yang dibatasi oleh vulva dan anus (Danis, 2000). Post Partum adalah selang waktu antara kelahiran placenta sampai dengan kembalinya organ genetik seperti pada waktu sebelum [...]
Berawal dari sistem mesin Von Neumann, sistem komputer pada saat ini telah berkembang pesat. Jaringan syaraf tiruan (JST) terjemahan dari Artificial Neural Network, merupakan suatu model dari sistem syaraf biologis yang disederhanakan sebagai suatu alternatif sistem komputasi. (Penelitian Jaringan Syaraf Tiruan,1993). Meskipun kecepatan proses yang telah dicapai komputer dewasa ini lebih cepat jika dibandingkan dengan [...]
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