2 Pages12> Go to Page...

Root or others solver Options  Email this topic  Watch this topic  Print this topic » Normal Threaded

Previous Topic Next Topic

OchkovVF		#1 Posted : 12 March 2024 04:27:01(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		See please the attach. I cannot solve the system of equation by all the alpha values from 0 too 360 deg. Is there the better solver for this task? Or the better way for the solution. Chebyshevs-Foot-Stepping-Machine.sm (180kb) downloaded 12 time(s).
		WWW
User Profile View All Posts by User View Thanks

	Wanna join the discussion?! Login to your SMath Studio Forum forum account. New Registrations are disabled.

StvMath		#2 Posted : 12 March 2024 06:29:43(UTC)
Rank: Advanced Member Groups: Registered Joined: 26/07/2022(UTC) Posts: 35 Location: UK Was thanked: 22 time(s) in 19 post(s)		Your expressions for (x4, y4) were unnecessarily complicated. See attached (Also with a better initial guess for x0). Chebyshevs-Foot-Stepping-Machine_b.sm (177kb) downloaded 5 time(s).
		WWW
1 user thanked StvMath for this useful post.		on 12/03/2024(UTC)
User Profile View All Posts by User View Thanks

OchkovVF		#3 Posted : 12 March 2024 08:12:27(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		Originally Posted by: StvMath Your expressions for (x4, y4) were unnecessarily complicated. See attached (Also with a better initial guess for x0). Chebyshevs-Foot-Stepping-Machine_b.sm (177kb) downloaded 5 time(s). I'm sorry, but this is not correct. The coordinates of point 4 should depend on the length L.04.
		WWW
User Profile View All Posts by User View Thanks

StvMath		#4 Posted : 12 March 2024 09:50:39(UTC)
Rank: Advanced Member Groups: Registered Joined: 26/07/2022(UTC) Posts: 35 Location: UK Was thanked: 22 time(s) in 19 post(s)		Originally Posted by: OchkovVF Originally Posted by: StvMath Your expressions for (x4, y4) were unnecessarily complicated. See attached (Also with a better initial guess for x0). Chebyshevs-Foot-Stepping-Machine_b.sm (177kb) downloaded 5 time(s). I'm sorry, but this is not correct. The coordinates of point 4 should depend on the length L.04. Because L.04 is the same length as L.03 it does, in fact, implicitly depend on L.04. Check the two files for a few angles and you will see that they give the same results (except that my file works for all angles). Basically, I've used the fact that (x4 + x3)/2 = x0 and (y4 + y3)/2 = y0. If L.04 and L.03 are different lengths a weighted average would be used, i.e. (L.03*x4 + L.04*x3)/(L.03 + L.04) = x0 and (L.03*y4 + L.04*y3)/(L.03 + L.04) = y0. Edited by user 12 March 2024 10:26:25(UTC)  | Reason: Not specified
		WWW
1 user thanked StvMath for this useful post.		on 12/03/2024(UTC)
User Profile View All Posts by User View Thanks

OchkovVF		#5 Posted : 12 March 2024 21:37:09(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		Thanks! See? please the attach Chebyshevs-Foot-Stepping-Machine.sm (179kb) downloaded 2 time(s). Now I will try to plot the trac of the point 4. Help me please.
		WWW
User Profile View All Posts by User View Thanks

StvMath		#6 Posted : 13 March 2024 01:47:02(UTC)
Rank: Advanced Member Groups: Registered Joined: 26/07/2022(UTC) Posts: 35 Location: UK Was thanked: 22 time(s) in 19 post(s)		Originally Posted by: OchkovVF Thanks! See? please the attach Chebyshevs-Foot-Stepping-Machine.sm (179kb) downloaded 2 time(s). Now I will try to plot the trac of the point 4. Help me please. See attached (but I'll leave you to do any animation!). Chebyshevs-Foot-Stepping-Machine_c.sm (177kb) downloaded 5 time(s).
		WWW
1 user thanked StvMath for this useful post.		on 13/03/2024(UTC)
User Profile View All Posts by User View Thanks

OchkovVF		#7 Posted : 13 March 2024 04:07:28(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		Thanks! See please my little editing Chebyshevs-Foot-Stepping-Machine-Trace.sm (178kb) downloaded 4 time(s). One question See please Chebyshevs-Foot-Stepping-Machine-Trace-Plot.sm (179kb) downloaded 5 time(s). and tell me - it is my or SMath bug with the plot?
		WWW
User Profile View All Posts by User View Thanks

StvMath		#8 Posted : 13 March 2024 06:19:48(UTC)
Rank: Advanced Member Groups: Registered Joined: 26/07/2022(UTC) Posts: 35 Location: UK Was thanked: 22 time(s) in 19 post(s)		Originally Posted by: OchkovVF Thanks! One question See please Chebyshevs-Foot-Stepping-Machine-Trace-Plot.sm (179kb) downloaded 5 time(s). and tell me - it is my or SMath bug with the plot? ?? I don't see anything wrong with the plot!
		WWW
User Profile View All Posts by User View Thanks

OchkovVF		#9 Posted : 13 March 2024 07:19:04(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		?? I don't see anything wrong with the plot! See please
		WWW
User Profile View All Posts by User View Thanks

StvMath		#10 Posted : 13 March 2024 07:27:07(UTC)
Rank: Advanced Member Groups: Registered Joined: 26/07/2022(UTC) Posts: 35 Location: UK Was thanked: 22 time(s) in 19 post(s)		Originally Posted by: OchkovVF ?? I don't see anything wrong with the plot! See please Oh!, I see! Just double-click on the plot, select Traces, then for each of Traces 2 through 6 select Symbol style, then Circle.
		WWW
1 user thanked StvMath for this useful post.		on 13/03/2024(UTC)
User Profile View All Posts by User View Thanks

OchkovVF		#11 Posted : 13 March 2024 07:30:06(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		Originally Posted by: StvMath Originally Posted by: OchkovVF ?? I don't see anything wrong with the plot! See please Oh!, I see! Just double-click on the plot, select Traces, then for each of Traces 2 through 6 select Symbol style, then Circle. it's one bug?
		WWW
User Profile View All Posts by User View Thanks

OchkovVF		#12 Posted : 13 March 2024 07:43:29(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		About this task see please pp 23-34 here Study-8-Kinematic.pdf (2,212kb) downloaded 2 time(s). Study-8-Kinematic.pdf (2,212kb) downloaded 2 time(s). The chapter 8 from the book 2^5 Problems for STEM Education Now I am writing same chapter for the SMath book. For me will be interesting your remarks. Edited by user 13 March 2024 07:45:28(UTC)  | Reason: Not specified
		WWW
User Profile View All Posts by User View Thanks

OchkovVF		#13 Posted : 13 March 2024 09:06:27(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		(but I'll leave you to do any animation!). See the animation here tchebyshev plantigrade
		WWW
User Profile View All Posts by User View Thanks

uni		#14 Posted : 13 March 2024 19:21:14(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 10/11/2010(UTC) Posts: 1,494 Was thanked: 1274 time(s) in 745 post(s)		Я суслика не вижу, можно поконкретнее описать и показать что не так с компонентом X-Y Plot?
		Russia ☭ forever Viacheslav N. Mezentsev
		BLOG Twitter
1 user thanked uni for this useful post.		on 13/03/2024(UTC)
User Profile View All Posts by User View Thanks

OchkovVF		#15 Posted : 13 March 2024 19:34:28(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		Originally Posted by: uni Я суслика не вижу, можно поконкретнее описать и показать что не так с компонентом X-Y Plot? Спасибо, Вячеслав, что откликнулся. Суслик вот в чем. На этом графике в его аргументе записана система с перечислением кривых. Chebyshevs-Foot-Stepping-Machine-Trace.sm (178kb) downloaded 1 time(s). Все ОК. Затем для компактности документа я захотел использовать переменную Plot. Формат графика сбился. См. картинку наверху и Chebyshevs-Foot-Stepping-Machine-Trace-Plot.sm (179kb) downloaded 0 time(s).
		WWW
User Profile View All Posts by User View Thanks

uni		#16 Posted : 13 March 2024 19:57:59(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 10/11/2010(UTC) Posts: 1,494 Was thanked: 1274 time(s) in 745 post(s)		Я попробовал и мне трудно было повторить условия возникновения такого поведения. Настройки не должны слетать, если количество графиков между пересчётами документа не меняется. Если возникла ошибка во время построения одного из графиков, то настройки сохраняются. Если вы изменили количество отображаемых графиков (а оно определяется только во время пересчёта), то остальные графики "забываются". Рекомендация: отключить автоматический пересчёт на время подобных манипуляций. Я подумаю о добавлении опции - сохранять настройки между пересчётами не только для исключительных ситуаций. Возможно была причина, по которой я оставил такое поведение.
		Russia ☭ forever Viacheslav N. Mezentsev
		BLOG Twitter
1 user thanked uni for this useful post.		on 13/03/2024(UTC)
User Profile View All Posts by User View Thanks

OchkovVF		#17 Posted : 13 March 2024 20:26:57(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		Originally Posted by: uni Я попробовал и мне трудно было повторить условия возникновения такого поведения. Настройки не должны слетать, если количество графиков между пересчётами документа не меняется. Если возникла ошибка во время построения одного из графиков, то настройки сохраняются. Если вы изменили количество отображаемых графиков (а оно определяется только во время пересчёта), то остальные графики "забываются". Рекомендация: отключить автоматический пересчёт на время подобных манипуляций. Я подумаю о добавлении опции - сохранять настройки между пересчётами не только для исключительных ситуаций. Возможно была причина, по которой я оставил такое поведение. Спасибо! Заодно подумайте и о: 1. После ввода выражения кривой видно весь график. А то приходится долго крутить мышкой. 2. Возможность фиксирования разброса графика так, чтобы его мышкой нельзя было менять.
		WWW
User Profile View All Posts by User View Thanks

grelkin2		#18 Posted : 15 March 2024 18:23:36(UTC)
Rank: Advanced Member Groups: Registered Joined: 12/12/2020(UTC) Posts: 35 Was thanked: 3 time(s) in 3 post(s)		Я написал статью о лямбда-механизе Чебышёва. Smath почему-то анимацию не воспроизводит. Могу ответить на вопросы по вычислениям и системе. Решение получено при помощи метода Драгилева. http://razdvizh.site/chebl
		WWW
User Profile View All Posts by User View Thanks

OchkovVF		#19 Posted : 15 March 2024 20:14:16(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		Originally Posted by: grelkin2 Я написал статью о лямбда-механизе Чебышёва. Smath почему-то анимацию не воспроизводит. Могу ответить на вопросы по вычислениям и системе. Решение получено при помощи метода Драгилева. http://razdvizh.site/chebl Спасибо за ценную информацию, но ссылка не работает
		WWW
User Profile View All Posts by User View Thanks

OchkovVF		#20 Posted : 17 March 2024 00:18:38(UTC)
Rank: Advanced Member Groups: Registered, Advanced Member Joined: 06/04/2023(UTC) Posts: 339 Was thanked: 26 time(s) in 25 post(s)		I have change the roots function on the Newton function. Now we can change variables r, L,01, L.02 etc and no problem! 16-4-Chebyshevs-Foot-Stepping-Machine-Trace-Newton.sm (931kb) downloaded 4 time(s).
		WWW
User Profile View All Posts by User View Thanks

Users browsing this topic

Guest

2 Pages12> Go to Page...