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Power deviation correction system for air automobile engine

An engine power, automotive engine technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve problems such as large deviation, poor control quality, and untimely adjustment, and achieve accurate power and improved accuracy. degree, adjust the effect in time

Active Publication Date: 2019-09-17
ZHENGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a power deviation correction system for an air vehicle engine, which effectively solves the problem of using a closed-loop feedback system to adjust the amount of high-pressure compressed air energy to realize the power of the air vehicle engine. Accuracy, stability, resulting in untimely adjustment, large deviation, and poor control quality

Method used

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  • Power deviation correction system for air automobile engine
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  • Power deviation correction system for air automobile engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, a power deviation correction system for an air vehicle engine, the input device transmits the gear position signal, the key signal, and the air flow signal to the ECU controller, and the ECU controller outputs a PWM pulse signal to control the gas storage according to the signal of the input device The device (air storage tank storing high-pressure compressed air) outputs different amounts of air energy to drive the aerodynamic engine, and then drives the air vehicle to move forward / brake at the corresponding speed. The output power signal of the aerodynamic engine is connected in sequence through the flow correction circuit The control quantity calculation circuit and the pulse ratio modulation circuit perform power deviation correction to ensure that the aerodynamic vehicle has good starting / braking performance and speed performance;

[0020] The flow correction circuit takes the output power signal of the aerodynamic engine measured by the power sensor a...

Embodiment 2

[0022]Embodiment 2. On the basis of Embodiment 1, the flow correction circuit measures the output power signal of the aerodynamic engine through the power sensor and eliminates the expected power signal corresponding to the gear position signal and the key signal in the input device through the decoupling capacitor C1. After crosstalk between signals, enter the differential amplifier circuit with operational amplifiers AR1, AR2, and AR3 as the core to perform differential balance amplification processing, so that the signal is not affected by common-mode interference and temperature drift and transmitted to the subsequent circuit, and the power deviation signal is calculated. , the power deviation signal and the expected power signal are respectively added to the inverting input terminal of the operational amplifier AR4 through the resistor R10 and the inductor L1, and the inverting addition and amplification circuit composed of the operational amplifier AR4, resistor R11 and re...

Embodiment 3

[0023] Embodiment 3, on the basis of Embodiment 2, the control amount calculation circuit uses the natural logarithm operation circuit composed of operational amplifier AR5, resistor R13, resistor R14, and transistor Q2 to drive the corrected output of the received flow correction circuit Calculate the natural logarithm operation of the flow valve signal, that is, calculate the drive flow valve signal after ln correction, and use the natural logarithm operation circuit composed of operational amplifier AR6, resistor R16, resistor R17, and transistor Q3 to detect the received air flow sensor. The air energy flow information output by the flow valve of the air storage device (maf type air flow sensor can be used for detection, the specific detection process is the prior art and will not be described in detail) to calculate the natural logarithm operation, that is, to calculate the ln air energy The flow information, then ln corrected driving flow valve signal and ln air energy fl...

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Abstract

The invention discloses a power deviation correction system for an air automobile engine. A flow correction circuit inputs an air power motor output power signal measured by the power sensor, expected power signals corresponding to a gear signal and an a key signal of an input device into a differential amplification circuit to compute a power deviation signal; the power difference signal and the expected power signals are converted into the corrected driving flow valve signal through the AR4 coupling and proportion regulation of an operational amplifier and the extraction of cubic root operation, thereby improving the accuracy of the control quantity, and then the drive flow valve signal enters a control quantity computation circuit, a logarithm operation circuit taking the operational amplifier AR5 and AR6 and a divider IC1 as the core is applied to perform logarithm operation on the drive flow valve signal and an actual flow signal of a flow valve so as to obtain a control quantity signal of the flow valve needing fine tuning; and then the control quantity signal enters a pulse ratio modulation circuit and is used as a clock signal to directly modulate a PWM pulse signal inputted by a pulse ratio modulator after being converted into a square wave signal, thereby correcting the deviation of the air power motor output power with fast response and timely regulation.

Description

technical field [0001] The invention relates to the technical field of aerodynamic vehicles, in particular to a power deviation correction system for an air vehicle engine. Background technique [0002] The full name of the air car is a compressed air powered car. It uses high-pressure compressed air as the power source and air as the medium. During operation, it uses high-pressure compressed air to expand in the engine cylinder to perform work, push the piston to do work, and output power to drive the car. It does not consume fuel. It is a real zero-emission environment-friendly car, which can effectively alleviate the serious air pollution in cities and the lack of oil resources. For this reason, many countries are actively investing in research on air-powered cars. [0003] The running performance of air vehicles (starting, braking, acceleration and deceleration performance) mainly depends on the accuracy and stability of engine power of air vehicles, and the accuracy and...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0286G05B2219/24065
Inventor 李晶焦合军雷钢白凯军孙建延
Owner ZHENGZHOU INST OF TECH
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