discrete-time system
[/dɪˈskriːt taɪm ˈsɪstəm/]
nounpl: discrete-time systems
sistema de tempo discreto
1. A dynamical system in which variables are defined only at discrete points in time, typically at regular intervals, rather than continuously
A discrete-time system updates its state at each clock pulse rather than continuously.
Um sistema de tempo discreto atualiza seu estado a cada pulso de relógio em vez de continuamente.
2. In control theory and signal processing, a system where the input and output signals are defined only at specific time instants
Digital controllers implement discrete-time systems that sample continuous signals at fixed intervals.
Controladores digitais implementam sistemas de tempo discreto que amostra sinais contínuos em intervalos fixos.
3. A computational or mathematical model where time progresses in steps or increments rather than flowing continuously
The simulation of a discrete-time system requires specifying the sampling period.
A simulação de um sistema de tempo discreto requer a especificação do período de amostragem.
This is a specialized technical term primarily used in engineering, control theory, and digital signal processing fields. It is universally recognized in academic and industrial settings across Brazil, Portugal, and English-speaking countries. The concept is fundamental to modern digital control systems, embedded systems, and digital signal processing applications, making it essential terminology for electrical engineers, computer scientists, and automation specialists.
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