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A few weeks ago I purchased a mini barn kit from Sinny's Mini Art. I first saw this site shared on Anne Field's blog, and knew I had to have it. The barn is a tiny knock off of Breyer's deluxe stable, in 1:144 scale. This is dollhouse scale in dollhouse scale. 😄 There were Continue reading A Tiny Barn. The cost of the stable slots is as follows: 5 for the first, 5 for the second, 50 for the third, and 150 for the fourth. Just click and drag your current pet's icon to any stable slot on the right to stable it. If another pet is in that stable slot, that will now become your active pet. Add photoThe Star Stable Guideconsists of six different pages containing facts about the game and can be found in My Stable on the web.The player can reach the Star Stable Guide by clicking on the yellow exclamation mark. 1 Pages 1.1 Page One: A World Of Horses 1.2 Page Two: Getting Help 1.3 Page Three: Controls 1.4 Page Four: Jorvik 1.5 Page Five: Factions 1.6 Page Six: Subscribe today. Install Opera Browser on Linux Mint 19. Opera is one of the oldest and stable web browser available today. Opera is built on WebKit Engine so you can also install Google Chrome extensions on this browser.
win.setAspectRatio()work on Windows. #27203(Also in 12)
chrome.webRequestextensions API not intercepting any requests. #27096(Also in 10, 12)
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withFileTypes) failing on a deep directory within archive. #27010(Also in 12)
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event.replycould sometimes not deliver a reply to an IPC message when cross-site iframes were present. #26926(Also in 9, 10, 12)
systemPreferences.getAppLevelAppearance(). #26878(Also in 9, 10, 12)
remotemodule not being released after all references are dropped. #26836(Also in 12)
This example shows how to design a PID controller for the plant given by:
As a first pass, create a model of the plant and design a simple PI controller for it.
C_pi is a
pid controller object that represents a PI controller. The fields of
info show that the tuning algorithm chooses an open-loop crossover frequency of about 0.52 rad/s.
Examine the closed-loop step response (reference tracking) of the controlled system.
To improve the response time, you can set a higher target crossover frequency than the result that
pidtune automatically selects, 0.52. Increase the crossover frequency to 1.0.
The new controller achieves the higher crossover frequency, but at the cost of a reduced phase margin.
Compare the closed-loop step response with the two controllers.
This reduction in performance results because the PI controller does not have enough degrees of freedom to achieve a good phase margin at a crossover frequency of 1.0 rad/s. Adding a derivative action improves the response.
Design a PIDF controller for
Gc with the target crossover frequency of 1.0 rad/s.
The fields of info show that the derivative action in the controller allows the tuning algorithm to design a more aggressive controller that achieves the target crossover frequency with a good phase margin.
Compare the closed-loop step response and disturbance rejection for the fast PI and PIDF controllers.
You can compare the input (load) disturbance rejection of the controlled system with the fast PI and PIDF controllers. The perfect storm movie. To do so, plot the response of the closed-loop transfer function from the plant input to the plant output.
This plot shows that the PIDF controller also provides faster disturbance rejection.