Application Brief
For motor control solutions, ADI provides a complete product portfolio, including analog-to-digital / digital-to-analog converters, amplifiers, embedded processors, iCoupler® digital isolators, and power management devices; these high-performance devices and Increasing the degree of system integration helps to achieve a newer topology design and provides higher added value than ordinary customers. The performance of the servo drive system is closely related to the performance and accuracy of the motion control system constructed by the user. In most cases, the final use can be a high-precision CNC machine tool system, motion control system or robot system. These systems It is required to be able to accurately control the position and torque of the motor. ADI can provide a complete solution covering all important devices in the signal chain.
System design considerations and main challenges
• In servo control, high-precision current and voltage detection can improve the speed and torque control performance. Requires 12-bit performance and multi-channel ADC, ADI can provide a complete series of products.
• Position detection performance is the key to servo control. Optical encoders and resolvers are often used as position sensors. The conversion of servo control technology from analog to digital has promoted the development of modern servo systems and also met the high requirements for the performance and efficiency of motor control.
• From the perspective of giving priority to safety and protection, isolation techniques should be used for signal sampling and power device driving. ADI's iCoupler digital isolator products can meet high voltage safety isolation requirements.
• The use of high-performance processors such as DSP enables vector control and sensorless control.
• In the design of industrial applications, IC products with long life cycle and high reliability are the first choice of engineers.
• The transformation of ordinary AC induction motors to permanent magnet synchronous motors is a general trend, requiring system designers to provide higher efficiency and more flexible algorithms.
Value proposition of ADI solutions
For motor control systems, industrial system design requirements are low power consumption and high efficiency. ADI provides a single device and a complete product signal chain to speed up system design. In the signal chain, these provided by ADI include feedback and detection, Isolation, power management, interface, embedded processing, and communications products are second to none in their performance and quality, and can also reduce costs from the system level. It can be said that ADI ’s extensive technology portfolio, including world-class isolators, processors, converters, and mixed-signal front ends, can meet the needs of engineers for any motor control solution now and in the future.
System block diagram and signal chain
Note: The signal chain shown above represents a typical servo control solution. The technical requirements of each module are different, and the products listed in the table represent ADI solutions that can meet the requirements of the above sections.
Reference design and demo board
Software design resources
• VisualDSP ++ and algorithm support
• Support Matlab Simulink
• Complete scalability and flexibility
• Higher level system module development and function module definition
• Calling between functional modules-high flexibility in design process and structure
• FOC, vector control, sensorless controller and standard motor control function library
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