NXTLOG回到学校建造挑战赛

NXTLOG回到学校建造挑战赛
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THE FIFTH NXTLOG BUILDING CHALLENGE

September is here and many of you are going back to school. Your challenge is to design a NXT robot that you would take to school.

What job would your robot do for you?

A writer robot?
A robot that helps your teacher clean up?
A robotic pet to keep in your desk?
A guard bot to protect your locker?
A lunch bot that brings your lunch for you?
A robot that turns the pages of your textbooks?
A robot that fetches you pencils?

The ideas are endless and we’ll be looking for the most creative robots that you could not be without at school!

There's no limit on amount of LEGO MINDSTORMS NXT sensors, motors, NXT programmable bricks, HiTechnic sensors, or Bluetooth communication you can use on your NXT Back to School Bot.
Posted by: NXTLOGster
Created: 01 Sep 2007
Tags: buildingchallenge, contest, nxt200709, school, backtoschoolbot
RULES
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All entries to NXTLOG fall under the Terms of Service

Entries must be submitted from Saturday September 1, 2007 - Sunday September 30, 2007

All entries must be tagged "NXT200709"

Only LEGO elements may be used

There is no limit on the amount of LEGO MINDSTORMS NXT sensors,
motors, NXT programmable bricks, HiTechnic sensors, or Bluetooth
communication. No home brewed sensors allowed.

A programmable LEGO MINDSTORMS NXT brick must be onboard the robot and must control the robot's actions.

The NXT robot must be a robot that would perform a school related task. You must explain how the robot relates to being a “Back to School Robot” in your NXTLOG documentation.

A LEGO MINDSTORMS NXT program (.rbt file) is required of all robots entered to qualify.

You may enter more than one robot.

You may enter a robot that was previously submitted to NXTLOG (just remember to add the tag, "NXT200709")

All documentation (except video) must be posted on NXTLOG.

You must include the following in your NXTLOG Back to School Building Challenge entry:

Description - Careful, well-written explanation of how the robot was designed.

Pictures - Clear, well lit pictures - (no blurry ones!)

.rbt Program(s) - Annotations within the programs are a plus!

(Optional) Video
NXTLOG cannot host video at this time, but you may post a link to a video hosted on a personal website (no You Tube links)

The contest will be judged by the NXTLOG moderating team.

Go build, Contestants! You've got until Sunday September 30, 2007.

Winning projects will be highlighted on NXTLOG and MINDSTORMS.com news.

Good luck, and Play Well!
JUDGING
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Robots will be judged in three categories:

ROBOT DESIGN
Is the design innovative, creative, pleasing to look at, stable, dependable?

Careful explanations and pictures are essential to be considered for the Robot Design Award.

ROBOT PERFORMANCE
We will be looking for robots that can move efficiently and with stability.

Careful explanations and pictures are essential to be considered for the Robot Performance Award.

CREATIVE USE OF NXTLOG
How are you using NXTOG to document your project? Is your NXTLOG easy to read? Are you posting explanations over multiple steps? Are your pictures clear? Did you check your spelling? Are you responding to comments on your NXTLOG? Are you documenting your project in a way that might surprise NXTLOGgers?

Careful explanations and pictures are essential to be considered for the Creative use of NXTLOG Award.
 
基于C2000 DSP的电力电子、电机驱动和数字滤波器的仿真模型构建及其C代码实现方法。首先,在MATLAB/Simulink环境中创建电力电子系统的仿真模型,如三相逆变器,重点讨论了PWM生成模块中死区时间的设置及其对输出波形的影响。接着,深入探讨了C2000 DSP内部各关键模块(如ADC、DAC、PWM定时器)的具体配置步骤,特别是EPWM模块采用上下计数模式以确保对称波形的生成。此外,还讲解了数字滤波器的设计流程,从MATLAB中的参数设定到最终转换为适用于嵌入式系统的高效C代码。文中强调了硬件在环(HIL)和支持快速原型设计(RCP)的重要性,并分享了一些实际项目中常见的陷阱及解决方案,如PCB布局不当导致的ADC采样异常等问题。最后,针对中断服务程序(ISR)提出了优化建议,避免因ISR执行时间过长而引起的系统不稳定现象。 适合人群:从事电力电子、电机控制系统开发的技术人员,尤其是那些希望深入了解C2000 DSP应用细节的研发工程师。 使用场景及目标:①掌握利用MATLAB/Simulink进行电力电子设备仿真的技巧;②学会正确配置C2000 DSP的各项外设资源;③能够独立完成从理论设计到实际产品落地全过程中的各个环节,包括但不限于数字滤波器设计、PWM信号生成、ADC采样同步等。 其他说明:文中提供了大量实用的代码片段和技术提示,帮助读者更好地理解和实践相关知识点。同时,也提到了一些常见错误案例,有助于开发者规避潜在风险。
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