Digital proportional valve controlled cylinder system controller

Abstract

The invention provides a digital proportional valve controlled cylinder system controller to solve the problems that the process of parameter adjustment for a proportional valve controller is complexand the proportional valve controller is difficult to adapt to various working occasions in the prior art. The controller comprises a signal conversion module used for receiving an analog quantity signal acquired by a sensor of a preset category, converting the received analog quantity signal to a corresponding digital quantity signal, and sending the digital quantity signal to a preset position;and a signal processing module used for receiving the digital quantity signal sent by the signal conversion module and outputting a corresponding PWM control signal to a power amplifier stage circuitthrough the digital quantity signal processed and received by a preset microprocessor and a control algorithm preset by resolution. By employing the digital proportional valve controlled cylinder system controller, control parameters can be adjusted through the digital signal, the operation is flexible, the usage and the maintenance are simple and convenient, and the signal conversion precision isgreatly improved by employing the signal conversion module with high precision.

Description

technical field [0001] The invention relates to the technical field of electro-hydraulic proportional control, in particular to a digital proportional valve-controlled cylinder system controller. Background technique [0002] In many fields such as industry, aerospace, and military engineering, many hydraulic equipment need to achieve precise position control. With low cost and strong anti-pollution ability, electro-hydraulic proportional valves have replaced electro-hydraulic servo valves in many industrial applications. Therefore, the electro-hydraulic proportional valve-controlled cylinder position control system has broad application prospects. The proportional controller, as the control core of the valve-controlled cylinder system, controls the flow of the electro-hydraulic proportional valve and then controls the position of the hydraulic cylinder, and its performance directly affects the control effect of the valve-controlled cylinder system. [0003] At present, mo...

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Problems solved by technology

[0004] In order to solve the problem in the prior art that the proportional controller uses analog electronic components to form an analog control circuit, and the process of adjusting parameters is cumbersome and difficult to adapt to various working situations, the present invention provides a Analog-to-digital converter, realize on-demand adjustment of control algorithm and control parameters, good control performance and easy to use and maintain digital control cylinder controller

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