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Digital design method for feed induction feedback loop of electronic instrument

A feedback loop, electronic instrument technology, applied in the direction of electric controllers, controllers with specific characteristics, etc., can solve the problems of Gibbs overshoot, limited transmission bandwidth, undershoot, etc., to avoid ringing, improve safety effect

Pending Publication Date: 2021-04-30
苏州因曼吉科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The traditional instrument uses an analog circuit at the output stage to realize the negative feedback mechanism from the induction signal to the output signal, but for any analog circuit, its actual transmission bandwidth is limited, so when the object to be powered is powered on, there will be The Gibbs overshoot phenomenon when the voltage exceeds the set value, and the Gibbs undershoot phenomenon when the voltage is lower than 0 volts when the object to be powered is removed from the voltage

Method used

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  • Digital design method for feed induction feedback loop of electronic instrument
  • Digital design method for feed induction feedback loop of electronic instrument

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Embodiment Construction

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0057] see figure 1 As shown, a digital design method of an electronic instrument feed induction feedback loop includes designing a digital feedback loop composed of a high-speed analog-to-digital converter 1, a high-speed digital-to-analog converter 2, and a digital operator 3 that meet the maximum system response time constraints , and design the feedback algorithm running on the digital operator 3 to replace the traditional analog linear generation or nonlinear feedback circuit, so as to realize the real-time adjustment of the feed terminal voltage to compensate the feed cable according to the reverse direction of the signal amplitude of the induction terminal Loss, so that the signal amplitude applied by the instrument to the target end reaches the set value, while avoiding the risk of Gibbs ringing phenomenon; among them,

[00...

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Abstract

The invention discloses a digital design method for a feed induction feedback loop of an electronic instrument. The method comprises the following steps: designing a digital feedback loop which consists of a high-speed analog-to-digital converter, a high-speed digital-to-analog converter and a digital arithmetic unit and meets the maximum system response time constraint, and designing a feedback algorithm which operates on the digital arithmetic unit. A traditional analog linear generation or non-linear feedback circuit is replaced, so that the loss of the feed cable is adjusted and compensated in real time by the voltage of the feed end according to the reverse direction of the signal amplitude of the induction end, the amplitude of the signal applied to the target end by the instrument reaches a set value, and meanwhile, the risk of a Gibbs ringing phenomenon is avoided.

Description

technical field [0001] The invention belongs to the field of power supply instruments, and relates to a feedback link between a feed end and an induction end for instrument power output, in particular to a digital design method for an electronic instrument feed induction feedback loop. Background technique [0002] For a power supply instrument or a power signal generator, the output voltage must be applied to the object to be powered through the power supply cable. Due to the reactance of the power supply cable, when the load current of the object to be powered changes, the voltage drop on the power supply cable will change, resulting in a difference in the voltage applied to the power supply from the expected value. In order to solve the fluctuation of the voltage applied to the power supply object due to the change of the power supply cable and the load, the power supply instrument will add an additional induction cable to each output loop port to sense the voltage actual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 冯晓东李二文
Owner 苏州因曼吉科技有限公司
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