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Design method of digitalized MKT valve driving circuit

A technology of circuit design and power drive circuit, which is applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as the limitation of component accuracy and temperature coefficient improvement, high component failure rate, and complicated debugging process, etc., to achieve The effect of improving the stability of the driving signal, reducing the resistance and capacitance components, and simplifying the production and debugging process

Active Publication Date: 2019-03-01
BEIJING POWER MACHINERY INST
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Problems solved by technology

[0010] The control waveform requirements of the MKT valve are relatively complex, and this part of the circuit in the existing scheme is completely realized by analog circuits, which is very difficult to design
Existing circuits use a large number of discrete components such as resistors, capacitors, and transistors, and the improvement of the accuracy and temperature coefficient of components is limited. Under the harsh conditions of the ammunition environment, it is difficult to maintain stable circuit performance; Among them, the debugging of various parameters can only rely on adjustable resistors or potentiometers, the debugging process is too complicated, and the production efficiency is extremely low; moreover, due to the large number and types of discrete components, the cost is high, among which potentiometers, etc. The failure rate of components is high, which limits the improvement of product reliability

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  • Design method of digitalized MKT valve driving circuit
  • Design method of digitalized MKT valve driving circuit
  • Design method of digitalized MKT valve driving circuit

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Embodiment Construction

[0045] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0046] The implementation of the present invention proposes a digital design method of the MKT valve driving circuit for the turbofan engine used in bombs. The MKT valve drive circuit is part of the engine controller, as figure 1 shown. The digital MKT valve driving circuit design method of the embodiment of the present invention comprises the following steps:

[0047] Step 1: Generate a control waveform by a digital control operation circuit. The digital control operation circuit is composed of TMS320C32+ispLSI1048C, and the MKT valve current waveform is required to be as follows: Figure 4 As shown, the main parameter requirements of the MKT valve control waveform involved in the present invention are as follows: ...

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Abstract

The invention relates to a design method of a digitalized MKT valve driving circuit and relates to the technical field of control of power devices. The design method provided by the invention has thefollowing advantages and active effects that 1, the stability of a driving signal is improved and the system control performance is optimized; 2, a signal waveform adjusting technology is simplified and the production efficiency of a product is improved; 3, the variety and quantity of components are reduced so that the manufacturing cost is reduced; meanwhile, the reliability is improved.

Description

technical field [0001] The invention relates to the technical field of power plant control, in particular to a digital MKT valve drive circuit design method. Background technique [0002] The MKT valve is an important part of the fuel supply regulator for the bomb engine. It is used to adjust the fuel supply of the engine. It is the final actuator of the control system output command. Its working stability is very important in engine control. The MKT valve mainly consists of a valve body and a coil. The resistance of the coil is 14Ω, and the inductance is 20mH. When a current passes through the coil, the valve body will be driven to move due to the electromagnetic force, so as to achieve the purpose of adjusting the throttle. The working state of the valve depends on the current in the coil. current, usually current waveform requirements such as Figure 4 shown, where: [0003] T: waveform period, s; [0004] f: waveform frequency, 1 / T, Hz; f=4f0q(1-q), f0=40Hz; [0005] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/232F02C9/26
CPCF02C7/232F02C9/263
Inventor 谷中山丁瑛玮
Owner BEIJING POWER MACHINERY INST
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