外文翻譯---使用語(yǔ)音識(shí)別技術(shù)控制的焊接機(jī)器人工作單元

1、Use of Voice Recognition for Control of a Robotic Welding WorkcellABSTRACT: This paper describes work underway to evaluate the effectiveness of voice recognition systems as an element in the control of a robotic welding

2、 workcell. Factors being considered for control include program editor access security,Preoperation checklist requirements, welding process variable control,and robot manipulator motion overrides. In the latter two categ

3、ories, manual vocal control is being compared against manual tactile control and fully automatic control in terms of speed of response, accuracy, stability, reliability. And safety.IntroductionVoice recognition technolog

4、y is now recognized as a potential means for easing theworkload of operators of complex systems. Numerous applications have already been implemented, are in various stages of development, or are under consideration. Thes

5、e include data entry,control of aircraft systems, and voice identification and verification for security purposes.Voice control has also been proposed for use aboard the space station. One prime area for application woul

6、d be control of some functions of robots used for intraand extravehicular inspection, assembly, repair,satellite retrieval, and satellite maintenance when a crewmember is serving in a supervisory capacity or the system i

7、s operating in a teleoperation mode. Voice control of sensors and process variables would free the crewmember’s hands for other tasks, such as direct control or override of the manipulator motion. Similarly, the workload

8、 associated with control of many onboard experiments could be eased through the use of this technology.This paper describes the application of voice recognition for control of a robotic welding workcell. This is a comple

9、x system involving inputs from multiple sensors and control of a wide variety of robot manipulator motions and process variables. While many functions are automated, a human operator serves in a supervisory capacity, rea

10、dy to override functions when necessary. In the present investigation, a commercially available voice recognition system is being integrated with a robotic welding workcell at NASA wirefeed guide tube or by issuing tacti

11、le commands to a servomechanism. Use of a voice recognition system could eliminate the need for the operator to place his hand within the working envelope of the robot end effector or, if servomechanisms are employed,cou

12、ld improve speed of response and stability.Another aspect of robot operation in an industrial environment that is very important is the security of a program editing capability of the system. Under no circumstances shoul

13、d any unauthorized person be able to enter this programming mode and alter the robot’s program. A voice recognition system can provide the necessary security by allowing access only for individuals who are authorized and

14、 whose voices can be identified by the system.BackgroundRobotic welding is under development by NASA and Rocketdyne for the automation of welds on the Space Shuttle Main Engine that are presently made manually. The progr

15、ammability of a robot can reduce the percentage of welding defects through a combination of consistency and repeatability unattainable by its human counterparts. To do this, the robot is programmed to a nominal weld path

16、 and level of weld process parameters (i.e., current, travel speed. voltage,wire addition rate). Some adjustment of these values is often necessary due to conditions changing during the weld. A human making a manual weld

17、 accomplishes this adjustment readily, while a robot must rely on the limited talents of sensors and the ability of the operator to override functions when necessary.System IntegrationThe basic elements of the workcell s

18、ystem are shown diagrammatically in the illustration.The ultimate goal of the system development work in progress is to generate robot manipulator programs and weld process programs off line, download them to the workcel