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Parameter setting method of alternating current servo system controller

A system controller and parameter tuning technology, applied in the estimation/correction of motor parameters, etc., can solve the problems of oscillation, appropriate overshoot, long rise time, etc., to reduce professional requirements, simple operation and good performance Effect

Active Publication Date: 2014-03-26
NANJING ESTUN AUTOMATION CO LTD
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Problems solved by technology

[0013] In the literature "Realtimegaintuningofpicontrollersforhigh-performancePMSMdrives" (IEEE Transactions on Industry Applications, 2002, 38 (4): 1018-1019) and the literature "A Simple Algorithm for On-line Tuning of AC Servo System Speed ​​Controller Parameters" (Micro Motor, 2008, 41 (8): 3 In -4), the parameter setting is to optimize the PI parameters according to the peak value of the observed speed step response characteristic curve. Since the peak value cannot describe all the characteristics of the speed step curve, using this method may cause an overshoot. , and the rise time is too long or oscillation occurs

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  • Parameter setting method of alternating current servo system controller
  • Parameter setting method of alternating current servo system controller
  • Parameter setting method of alternating current servo system controller

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Embodiment Construction

[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] In this embodiment, the method of the present invention is applied to set and optimize the parameters of the speed controller of a servo system with a rated power of 1KW and a rated speed of 2000rpm. The flowchart of the tuning and optimization method is as follows: figure 1 shown.

[0047] First, if image 3 , set a time period T, within 0-T / 2 time, make the motor uniformly accelerate from 0 to ω with a fixed acceleration c , record the electromagnetic torque T in each current loop control cycle during uniform acceleration em1 (k) (k=1, 2...n; n=T / (2t c ), t cis the current loop control period); within T / 2-T time, make the motor decelerate by ω at the same deceleration as the acceleration c Then decelerate uniformly to 0, record the electromagnetic torque T in each current loop control cycle during the uniform decelerati...

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Abstract

The invention provides a parameter setting method of an alternating current servo system controller. The method comprises the following steps of firstly, according to the system inertia, distinguishing the system inertia; according to the distinguished system inertia J, obtaining the initial PI parameter by looking up the relationship table of PI (proportion and integration) parameter and system inertia; then, setting a target step command, sampling the corresponding feedback amount, and fitting the sampling points to obtain a system step response curve; according to the fit system step response curve, obtaining the overshoot, ascending time and stable fluctuation indexes of the response curve; according to the obtained indexes, distinguishing the types of the system step response curve. The method has the advantages that the response curve mainly have five types, and the PI parameter is correspondingly adjusted according to the types of response curve, until the indexes of the response curve meet the setting requirement of the actual application occasion; compared with the parameter optimizing method adopting the size of peak, the set parameter is more optimum, the obtained performance is better, and the operation is simple.

Description

technical field [0001] The invention relates to a parameter setting method of an AC servo system controller, in particular to setting the controller parameters according to indicators such as overshoot, rise time and steady-state fluctuation, and belongs to the technical field of industrial automation control. Background technique [0002] Based on the characteristics of strong real-time performance and high nonlinearity required by the servo drive controller, the parameter tuning of the servo drive becomes the core issue of servo control. The optimization of the servo parameters directly affects the accuracy and performance of the servo control. Since manual setting has high requirements for operators and the setting process is cumbersome and complicated, if the operator is not experienced enough, it is easy to cause the control parameters of the servo drive to be put into operation without being well set, so that satisfactory servo control performance cannot be obtained. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/14
Inventor 孙园园齐丹丹扶文树吴波
Owner NANJING ESTUN AUTOMATION CO LTD
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