Động cơ bước (Upd. 25/04/2006)

[falleaf]

Đây là đoạn email trao đổi với Douglas W. Jones về việc post tài liệu stepping lên diễn đàn.

Để tránh một số bạn thắc mắc về nguồn gốc tài liệu, sau hơn 1 năm không liên lạc, tôi đã email cho Douglas W. Jones để nhắc lại câu hỏi về việc phổ biến tài liệu stepping bằng tiếng Việt, và về www.picvietnam.com (tất nhiên chỉ là thủ tục, vì ỗng không thể biết tiếng Việt).

Tuy nhiên, tôi xin xác nhận, tài liệu này không được sử dụng cho mục đích thương mại và không được phép đặt ở những nơi khác ngoại trừ www.diendandientu.com và www.picvietnam.com

Chúng tôi cung cấp hoàn toàn miễn phí, nhưng vì bản quyền của Douglas W. Jones, tôi mong rằng các bạn có sự tôn trọng nó.



> I'm Hiep, do you remember me?

Of course I remember you!

> I'm used to study with you on stepping control. I'm now at INPG in
> France to study on Automatic Control. I'm expected to graduate the
> master degree on 1st July. It seems that I haven't emailed you for a
> year.

Congratulations! Haptic devices and nanomanipulation sound like fun
topics.

> I'll finish my master at INPG and then come to Korea for the PhD
> thesis next August.

Korea? Strangely, at this moment, my department chairman is in Hanoi.
The world is becoming a very small place.


> I would like to inform you that, I've translated all of your tutorial
> into Vietnamese, and use it to teach younger students who enjoy in
> stepping control.

Thank you. I am always glad to hear that my work is of some value.

> And I did open a forum on microcontroller PIC at
> www.picvietnam.com (it is in Vietnamese, perhaps you cannot read it).

I looked, but you are right, it is written in a language that is a
mystery
to me.

The question of election technology still occupies much of my time. I
spent
election day last November in Washington DC helping monitor the election
(mostly answering questions from around the country about technical
issues).
I also taught a course on computer security for the first time this
spring.
Teaching a course like that for the first time was very difficult work
because
the topic is such a large one.

> By the way, I would like show you my picture, I've taken in Swiss. I
> travelled to Swiss last month.

I think we have stood in exactly the same spot. As proof, I offer the
attached
photo, half of which is your photo, the other half is one I took. I
was in
Geneva two years ago at about this time of year. The photo was taken
just
before the sun set, while your photo was taken in the late morning, so
the
light is very different.

Doug Jones
jones@cs.uiowa.edu