Rank: 1496 based on 85 downloads (last 30 days) and 2 files submitted
photo

Hitoshi Takeshita

E-mail

Personal Profile:

 

Watch this Author's files

 

Files Posted by Hitoshi Takeshita View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
14 Jul 2014 Screenshot Model-Based Design for Electrical Automobile Chassis Control You will be able to understand MBD process with Lego R/C car. Author: Hitoshi Takeshita simulation, control design, automotive, embedded code, vehicle, lego 31 0
  • 4.0
4.0 | 1 rating
14 Jun 2013 Screenshot Euler–Lagrange equation Solve Euler–Lagrange equation automatically. Author: Hitoshi Takeshita euler, lagrange, plant model 54 1
  • 5.0
5.0 | 2 ratings
Comments and Ratings on Hitoshi Takeshita's Files View all
Updated File Comment by Comments Rating
30 May 2014 Euler–Lagrange equation Solve Euler–Lagrange equation automatically. Author: Hitoshi Takeshita Zhiyuan

Hi Hitoshi,

Great sharing, and I really like your work.

The might be an error when you take partial derivative of q.

For example after
tmpeq2 := subs(tmpeq0, repeqL1 ):
The diff(th(t),t) was also replaced by diff(q, t), which would be wrongly evaluated to be zero.

One way to solve this, first use
tmpeq2 := subs(tmpeq0, repeqL2, repeqL1);
after the partial derivative of tmpeq2, then use
subs( term2, inveqL1, inveqL2);

This won't be an issue if diff(th(t),t) and th(t) are not multiplied together in the Kinematic energy term, but it would if they are, like in the case in file Step10.

Also in Step10, a tiny typo for bar2's y-position:cos(th1(t)) should be sin(th1(t)).

Thanks for sharing.

Best regards,
Zhiyuan Zuo

18 Oct 2013 Euler–Lagrange equation Solve Euler–Lagrange equation automatically. Author: Hitoshi Takeshita Deepak Ramaswamy

11 Jun 2012 Model-Based Design for Electrical Automobile Chassis Control You will be able to understand MBD process with Lego R/C car. Author: Hitoshi Takeshita Mehmet TASPINAR

Contact us