Controller for digitalized proportional valve with high switching frequency and control method of controller

A switching frequency and proportional valve technology, applied in the field of proportional valves, can solve the problems of low control precision of proportional valves, achieve the effects of improved accuracy and sensitivity, good versatility, and high repeatability

Active Publication Date: 2015-07-01
NANJING XINXUAN ELECTRONICS SYST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a digital proportional valve contr

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  • Controller for digitalized proportional valve with high switching frequency and control method of controller
  • Controller for digitalized proportional valve with high switching frequency and control method of controller
  • Controller for digitalized proportional valve with high switching frequency and control method of controller

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0043] Such as figure 1 As shown, a digital proportional valve controller with high switching frequency includes a microprocessor, a communication port, a drive circuit, a power amplifier circuit, a position detection circuit for detecting the position information of the proportional valve, and a position detection circuit for detecting the electromagnetic coil passing through the proportional valve. The current detection circuit of L1 current, the communication port is connected with the microprocessor for two-way communication, the position detection circuit and the current detection circuit are respectively connected with the input end of the analog-to-digital conversion interface of the micr...

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Abstract

The invention discloses a controller for a digitalized proportional valve with high switching frequency. The controller comprises a microprocessor, a communication port, a drive circuit, a power amplification circuit, a position detection circuit and a circuit detection circuit. The communication port is connected with the microprocessor in a bidirectional communication mode, the position detection circuit and the current detection circuit are connected with analog-digital conversion interfaces of the microprocessor respectively, the microprocessor is connected with the power amplification circuit through the drive circuit, and the power amplification circuit is in electric connection with an electromagnetic coil of the proportional valve. The invention further discloses a control method of the controller for the digitalized proportional valve with high switching frequency. The method comprises the steps that the microprocessor receives a position setting signal and a current setting signal through the communication port, and whether position closed-loop control and current closed-loop control or only the current closed-loop control is adopted in the controller for the proportional valve is judged through a selection switch. By means of the control method, the working modes can be selected according to the actual working demands, and good flexibility and adaptability are achieved.

Description

technical field [0001] The invention relates to a digital proportional valve controller with high switching frequency, and also relates to a control method for the digital proportional valve controller with high switching frequency, belonging to the technical field of proportional valves. Background technique [0002] The electro-hydraulic proportional valve control technology is widely used in mechanical processing, construction machinery, metallurgy and other industries. The basic principle of proportional valve control is to use the stroke force of the electromagnet to be proportional to the magnitude of the current flowing through it. The size of the iron current realizes the control of hydraulic pressure and flow. [0003] Proportional valve control technology currently has two main control methods, namely, analog circuit control and digital control. [0004] At present, the main development trend of the proportional valve controller is to use pulse width modulation te...

Claims

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Application Information

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IPC IPC(8): F16K31/06F16K37/00
CPCF16K31/06F16K37/0041
Inventor 万其陈桂盛党红温秀兰
Owner NANJING XINXUAN ELECTRONICS SYST ENG
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