第1个回答 2013-10-27
Generally, the executing agency, robots driven devices, test equipment and control system and complex machinery, etc. [1] actuators, its robotic arms general ontology using space open chain link mechanism, including sports vice deputy vice or move (turn) is often called the joints, the number is usually for robot joints of free degree. According to the joint configuration types and different forms of exercise coordinate robot actuators can be divided into the rectangular type, cylindrical coordinates type, polar coordinates type and joints. Out of consideration, often personified on parts of robot body respectively called base, waist, wrist, arm, hand (grippers or end actuator) and walk (for mobile robot), etc. Device drivers are driving actuators motion control system, according to the instructions issued by dynamic elements that signal, the robot moves. It is the signal output and input line, the angular displacement is. Robots are mainly used in driving devices, such as electric drive stepping motor servo motor, etc, also have adopts hydraulic and pneumatic device drivers. Detection device is real-time detection of robot, sports and work according to the feedback control system, and set to compare information, after the adjustment, enforcement agencies to ensure the action of the robot with reservation. As the sensor detection device can be divided into two kinds: one kind is inside information, which is used to detect sensor robots each part of internal condition, such as the position of each joint, velocity, acceleration, etc., and will obtain the information as feedback signals sent to the controller, forming closed-loop control. Another kind is outside sensors for access relevant information of the robot homework and external environment, etc, in order to make robots can adapt to the action of external changes, to achieve higher level of automation, and even make robot has a "feel" intelligent development, for example, to sound sleep, etc, and external visual sensor gives work, work environment of the relevant information, use this information to constitute a feedback loop, which will greatly improve the accuracy of the robot work. There are two ways to control system. A centralized control, which is controlled by a robot all microcomputer. Another kind is scattered (level), which is a type of control a microcomputer to share more control of the robot, such as when the next two levels, the microcomputer control of the robot is complete, the host used to be responsible for the system of management, communication, kinematics and dynamics calculation, and send to the lower microcomputer instruction information, As a junior respectively from the machine, various joints on a CPU, computing and servo control interpolation, given to the host, and feedback. According to the different requirements of the task, robot control mode can be divided into the position control, continuous trajectory control and force (moment) control.
第2个回答 2013-12-12
Future Robot
In 2088, there are many robots in the world. Every family has more than one robot. Everyone can make different robot, it’s popular in the world.
I have three robots, the first one is from my friend, the second one is from my parents, and the third one is from my classmate.The first robot is Peg. It has a square face, its body is a big circle, and it has a small mouth. It can run very fast, it can jump very high, it can swim slowly, and it can fly with me! It likes eating some milk for breakfast, some noodles for lunch and some porridge for dinner. Look! Peg is riding a bicycle. It’s learning about balance. Be careful, Peg!
The second robot is Jack. It has a round face, two small eyes and a big mouth. It can dance very well, it can play the piano quite well, and it can skate well. Jack likes making friends with people, animals, trees and flowers, even air. Listen! Jack is playing the piano! Oh, that’s very good. Everyone likes it.
The last one is Dick. It’s the cutest than Peg and Jack. It can teach me how to live, and it can help me play, relax and learn new things!
The robots can teach me many things, they can make me happy, they are fun, I like it!