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Motor speed control system and load inertia estimating method using inverse operating model

A load inertia and motor technology, applied in the control system, motor parameter estimation/correction, AC motor control, etc., can solve the problems that the estimated value has a great influence and the estimated value of the load inertia Jl changes greatly, and achieves fast convergence Steady-state error easing, the effect of fast convergence load inertia estimation

Inactive Publication Date: 2007-03-07
DELTA ELECTRONICS INC
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Problems solved by technology

[0014] From Formula 3, it can be known that since the denominator is a variable value, the number of sampling points is related to the load inertia J l The estimated value of the influence is so great that the load inertia J l Estimates for vary widely

Method used

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  • Motor speed control system and load inertia estimating method using inverse operating model
  • Motor speed control system and load inertia estimating method using inverse operating model
  • Motor speed control system and load inertia estimating method using inverse operating model

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Embodiment Construction

[0045] Specific embodiments are given below to describe the content of the present invention in detail, and the accompanying drawings are used as auxiliary descriptions. The symbols mentioned in the description refer to the reference symbols.

[0046] The present invention mainly utilizes an inversion system to inversely deduce the actual torque output, and then uses an adaptive algorithm to estimate the actual load inertia, so as to achieve the purpose of real-time estimation and precise control.

[0047] Referring to FIG. 3 , it is a motor speed control system using an inverse calculation mode according to an embodiment of the present invention, which is applied to an AC servo module, and mainly consists of an actual system G and an inverse calculation system G 0 composed of.

[0048] The component composition and operation of the actual system G are substantially the same as those of the conventional motor speed control system described above, so the description will not b...

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Abstract

This invention relates to motor speed control system and load inertia evaluation by use of inverse module applied in one alternating servo module, which uses one inverse system connected to the real system to induct torque output and when real system generates speed signals values increasing, it will add net inertial volume to update net inertia proportion.

Description

technical field [0001] The invention relates to a load inertia estimation technology, in particular to a motor speed control system and a load inertia estimation method using an inverse calculation model. Background technique [0002] The AC servo module mainly includes two parts: the driver and the motor. Installing the servo motor on the applied mechanism can meet the needs of positioning or speed control. Therefore, when designing an AC servo drive, the moment of inertia (rotor inertia) of the load is an important parameter in the design. Only by accurately estimating this parameter can it be ensured that the AC servo drive can perform calculation control. This parameter has a correct value to make accurate control calculations. However, it is difficult to obtain the inertia value of the mechanism through mathematical calculation. It needs to be obtained by online real-time estimation method, so as to provide the AC servo driver with real-time understanding of the facto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/00H02P23/14
Inventor 蔡清雄吴家明
Owner DELTA ELECTRONICS INC
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