Options for the schemes of the node of flexible negative feedback
Options for the schematic of the node of flexible negative feedback correcting or forming flexible feedback expand the possible range of other parameters of the system (reinforcement of feedbacks on current and voltage), and it becomes possible to improve the static and dynamic characteristics of the system. However, it should be borne in mind that if the management system is built in such a way that the task of the formation of transition processes of drives is assigned to flexible feedbacks, then, on the one hand, this significantly increases the requirements for the reinforcement coefficient of flexible feedback, and on the other hand, – on the other hand. leads to non -use of the capabilities of the management system to obtain good speed and the best quality of transition processes.
Options for the schemes of the node of flexible negative feedback
Options for the schemes of the node of flexible negative feedback system with corrective flexible feedbacks are preferable to the system with forming flexible feedback. In other words, the control system should be built in this way and the nature of the main strict feedback and their amplification coefficients should be such that they, with a certain approximation, ensure the required law of change in voltage on the winding of the generator excitation in transitional processes.
And flexible feedback should be entrusted with the task of eliminating re -regulation, achieving sustainable operation of the system and, if necessary, obtaining a monotonous nature of transition processes.
Options for the schemes of the node of flexible negative feedback
Variants of flexible negative feedback schemes in the control systems of excavator electrical drives use various types of flexible feedbacks, but, as well as among hard feedback, among flexible feedbacks, two main types used in many control schemes are a flexible negative. Feedback on E. D. With. (sometimes voltage) generator and flexible negative feedback on the current of the main circuit. By voltage. Since flexible feedback is a feedback on the derivative of the input value, well -known differentiating schemes can be used for its implementation – a diagram with a differentiating transformer and with a differentiation contour.
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