tailieunhanh - Machine Servo Drives

Positioning systems in general have their most basic form, and also the most complex, in the human being. The brain serves as the summing network that accepts the command for a desired motion or position, the musculatory system serves as the power source or prime mover to cause motion to take place, and the sensory system, such as the eyes, determines the present position. In general, these three things—the brain, the muscles, and the eyes—are analogues to the three basic parts of any positioning system | 4 Machine Servo Drives TYPES OF DRIVES Positioning systems in general have their most basic form and also the most complex in the human being. The brain serves as the summing network that accepts the command for a desired motion or position the musculatory system serves as the power source or prime mover to cause motion to take place and the sensory system such as the eyes determines the present position. In general these three things the brain the muscles and the eyes are analogues to the three basic parts of any positioning system. The brain accepts the command or reference as it is sometimes called and compares it to the feedback to answer the question How do we get to where we want to be The eyes are the feedback device sometimes called a measuring system which answers the question Where are we The difference between the command or the desired position and the actual position determined from the feedback device is referred to as the position error. It is this error that makes the prime mover cause motion to take place resulting in the actual position equaling the desired position and the position error being reduced to zero. Applying these definitions to a position control system we have three basic parts of a position system shown in block diagram form in Figure 1. The desired position must take the form of a piece of equipment to Copyright 2003 by Marcel Dekker Inc. All Rights Reserved Command Fig. 1 Machine servo-drive block diagram. convert from the language of dimensions to the language of the prime mover. The input may be a calibrated scale in the dimension of inches or degrees with a pointer and handle. The output will usually be some voltage. The actual position is usually determined with some measuring device that is generally referred to as a transducer. The output language of the measuring or feedback device must be the same language as the command since the feedback is subtracted from the command signal. The answer is the position error signal.

• Cơ sở dữ liệu
• Positioning systems
• power source
• equipment
• feedback device
• summing junction
• servomechanism
• Master's thesis of Applied Science
• Master's thesis
• Wi Fi fingerprinting
• Indoor positioning
• Wi Fi based indoor positioning system
• Typical positioning techniques
• Wi Fi based Systems
• Inertial navigation system
• Polar code
• Flicker mitigation
• Run length limited
• Visible light communication
• Beacon based indoor positioning systems
• Indoor Positioning Algorithm
• Location based Services
• Kalman Filter
• Intelligent travel guide systems
• Smart tour applications
• global
• positioning
• system
• model
• systems
• air
• force
• space
• sustaining
• báo cáo khoa học
• báo cáo hóa học
• công trình nghiên cứu về hóa học
• tài liệu về hóa học
• cách trình bày báo cáo
• IBM CloudBurst
• Hardware Features and Functions
• Software Features and Functions
• Configurations
• Product positioning
• National Language Support
• scientific reports
• Report medicine
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• breast cancer
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• Solar tracking
• Control systems
• MPU6050 data
• Determine motion trajectory
• Geopositioning and mobility
• Platforms and applications
• Pedestrian navigation
• The benefit of mobility
• The application
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