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Electrical servo system and control algorithm thereof

An electric servo and control algorithm technology, applied in the field of servo control, can solve problems such as difficult to obtain satisfactory performance and complexity, achieve high engineering application value, suppress resonance peaks, and eliminate limit cycles

Active Publication Date: 2015-08-05
SHANGHAI XINYUE METER FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For electric servo systems with complex characteristics and high performance indicators, it is difficult to obtain satisfactory performance by using the above conventional methods

Method used

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  • Electrical servo system and control algorithm thereof
  • Electrical servo system and control algorithm thereof
  • Electrical servo system and control algorithm thereof

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Embodiment Construction

[0064] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0065] Such as figure 2 As shown, an electric servo system uses an electric servo mechanism 5 as an actuator of the electric servo system, and the output end of the electric servo mechanism 5 is connected to an external load 6. The electric servo system includes: a first comparator 1, a position A control unit 2 , a second comparator 3 and a current control unit 4 .

[0066] Wherein, the first input terminal of the first comparator 1 obtains the input swing angle instruction θ i The position control part 2 is connected with the first comparator 1; the first input end of the second comparator 3 is connected with the output end of the position control part 2; the input end of the current control part 4 is connected with the output end of the second comparator 3 , the output end of the current control component 4...

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Abstract

The invention discloses an electrical servo system and a control algorithm thereof. Through setting a position proportion / integration calculating unit, a notch filter, a position feedback processing unit and a current control component, a "position / current double closed-loops+ specific section integration+ notch filter" algorithm of the electrical servo system is realized, and an accurate algorithm of the notch filter is provided, and thus the control difficulty that nonlinear part influence is obvious due to complex characteristics of the semi-closed-loop electrical servo system is overcome. The method can effectively suppress resonance peak of the electrical servo system and also eliminates limit cycle caused by gaps. Therefore, the electrical servo system and the control algorithm have very high engineering application values.

Description

technical field [0001] The invention relates to the technical field of servo control, in particular to an electric servo system and a control algorithm thereof. Background technique [0002] The electric servo system has been widely used due to its flexible control method, high efficiency and high operation reliability. Considering the realization cost and system stability, the electric servo system is often used figure 1 In the control mode shown, the feedback signal is directly drawn from the drive end, and the system is a semi-closed-loop structure. In the actual application process, the servo mechanism often has problems such as large load inertia, low structural rigidity, low damping and mechanical clearance. Large inertia and low stiffness lead to severe structural resonance and low resonance frequency of the system; mechanical gaps cause serious system response lag, and there may be limit cycles, and system loads are prone to high-frequency oscillations. [0003] Th...

Claims

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Application Information

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IPC IPC(8): H02P6/10H02P6/18
Inventor 冯伟钱昌年胡翔宇冀娟
Owner SHANGHAI XINYUE METER FACTORY
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