Как выбрать гостиницу для кошек
14 декабря, 2021
It is important to use the simplest available method to induce the desired control-rod motion for a test. Safety considerations also influence the selection of a procedure. In general, there are three possibilities.
(a) Open-Loop Rod Motion Control
In this case, the rod moves as long as the drive signal is supplied. Figure 7.1a shows the open-loop control system. The motion may be continuous or step-wise. A binary pulse chain (or a finite-rise-time approximation to it) can be introduced by actuating the insert and withdraw commands for a predetermined length of time. Also, it may be necessary to use different command durations for insert and withdraw signals because of gravitational effects on rod coasting characteristics.
(c)
Пн | Вт | Ср | Чт | Пт | Сб | Вс |
---|---|---|---|---|---|---|
1 | ||||||
2 | 3 | 4 | 5 | 6 | 7 | 8 |
9 | 10 | 11 | 12 | 13 | 14 | 15 |
16 | 17 | 18 | 19 | 20 | 21 | 22 |
23 | 24 | 25 | 26 | 27 | 28 | 29 |
30 |
14 декабря, 2021
1 декабря, 2021
21 сентября, 2021
17 сентября, 2021
7 сентября, 2021