Servo valve and servo unit integrated with digital shaft controller

Abstract

The invention relates to a servo valve and servo unit integrated with a digital shaft controller. The servo valve and servo unit comprises a micro-processing shaft controller, a servo valve body, a servo control element, a first drive motor and a second drive motor, wherein the first drive motor and the second drive motor are in drive connection with the two ends of the servo valve body. The micro-processing shaft controller is in communication connection with a remote control end. The micro-processing shaft controller is in communication connection with the control ends of the first drive motor and the second drive motor. A high-pressure oil cavity, an oil return cavity, an oil outlet cavity and an oil returning cavity are arranged on the servo valve body. A feedback sensor is arranged onthe servo control element and is in communication connection with the micro-processing shaft controller. The servo valve and servo unit has the advantages that the control integration level and universality are high, control precision and the adjusting speed are higher, reliability and oil dirt contamination resistance are higher, all-digital communication can be achieved, the requirement of Internet-of-Things communication control can be met, and the cost is lower; and the application of traditional servo valve control oil cylinder and valve control motor systems can be completely replaced,and precise control over positions, speeds, pressure / force, torques and the like is achieved.

Description

technical field [0001] The invention relates to the technical field of hydraulic proportional servo valve control, in particular to a servo valve and a servo unit integrating a digital axis controller. Background technique [0002] With the development of automation, informatization and networking in the industry, more and more hydraulic control systems adopt servo systems, and put forward higher requirements for hydraulic servo systems. Hydraulic servo systems should be high-precision, high-response, and highly reliable. , high integration, strong versatility, and digital network communication. [0003] The servo system commonly used in the market is a control loop composed of a conventional proportional valve, a high-response proportional valve, a servo valve and a special servo controller. The quality of the valve and the coordination control with the servo controller directly affect the servo system. System quality. [0004] Conventional proportional valves cannot meet...

AI Technical Summary

Problems solved by technology

However, due to the limited driving force of the proportional linear bidirectional motor, the short stroke and limited anti-pollution ability, it is prone to failures such as spool sticking and amplifying board burning.

The servo valve adopts four 0.3mm small-diameter orifice nozzles and a torque motor to drive the baffle, but it has high requirements for oil cleanliness and poor reliability, and frequent failures such as nozzle clogging, nozzle corrosion, and valve core jamming

Conventional servo controllers often use imported motion controllers, and also use PLC-made controllers and servo valves to form servo systems; the control methods are different, the matching of various parameters is complicated, the speed regulation is complicated, and the self-adaptive ability is poor; All high precision, high response, wide speed range, strong versatility, high reliability and other characteristics, and the price is high

[0005] At present, the servo systems with better quality on the market use imported brand servo valves and controllers. The price is high and the control quality cannot meet the needs of industrial development towards higher precision, high response, high reliability, high integration, strong versatility, digital Network communication and other development needs

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