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Hydraulic-motor angular speed servo system

A technology of hydraulic motor and servo system, which is applied in the direction of electric speed/acceleration control, etc., to achieve the effect of improving stability, insensitive to system performance changes, and avoiding overshoot phenomenon.

Inactive Publication Date: 2014-03-12
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general feedback control method widely used today can no longer meet the requirements. The use of new electro-hydraulic servo system and servo control method is the problem to be solved to further improve the performance of hydraulic motor angular velocity servo system

Method used

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  • Hydraulic-motor angular speed servo system
  • Hydraulic-motor angular speed servo system
  • Hydraulic-motor angular speed servo system

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0021] Such as figure 1 Shown is a block diagram of the electro-hydraulic angular velocity servo system of the present invention. This electro-hydraulic angular velocity servo system is made up of angular velocity command signal generator 110, servo controller 120, servo amplifier 130, servo object 140, angular velocity measuring sensor 150 and hydraulic pressure source 160; Integrator 122, integral coefficient K i1 Multiplier 123, first subtractor 124, second integrator 125, integral coefficient K i2 Multiplier 126, second subtractor 127, feedback coefficient K d1 Multiplier 128 and the feedback coefficient K d2 The multiplier 129 is composed of the comparator 121, the first integrator 122, the integral coefficient K i1 Multiplier 123, first subtractor 124, second integrator 125, integral coefficient K i2 The multiplier 126 and the second subtractor 127 are con...

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Abstract

The invention discloses a hydraulic-motor angular speed servo system. The hydraulic-motor angular speed servo system comprises an angular-speed command signal generator, a servo controller, a servo amplifier, a servo object, an angular-speed measuring sensor and a hydraulic source. The servo controller comprises a comparator, a first integrator, an integration coefficient Ki1 multiplier, a first subtractor, a second integrator, an integration coefficient Ki2 multiplier, a second subtractor, a feedback coefficient Kd1 multiplier and a feedback coefficient Kd2 multiplier. The servo object comprises an electro-hydraulic servo valve, a hydraulic motor and a mechanical load. Adjustment of control parameters has calculation formulas to follow, so that blindness of parameter adjustment is avoided, time is saved, system stability is improved, and overshooting is avoided; static and dynamic performance of the electro-hydraulic angular speed servo system are improved comprehensively, floating is realized, dynamic response time is short, overshooting and vibration are avoided, and dynamic tracking precision is high.

Description

Technical field: [0001] The invention relates to a hydraulic motor angular velocity servo system, in particular to a valve-controlled hydraulic motor angular velocity servo system controlled by a servo controller. Background technique: [0002] At present, the precise control of the angular velocity of the hydraulic motor must adopt the closed-loop feedback control method to obtain better control accuracy. adjust. Sensors that detect the angular velocity of the controlled object are often directly connected to the controlled object. [0003] For the error control operation, proportional control (P control), proportional plus integral control (PI control), proportional plus integral plus differential control (PID control) are widely used at present. In the above-mentioned conventional control methods, P control is differential control, which often cannot meet the high-precision control occasions; PI and PID control can meet the steady-state control accuracy, but if in order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D13/62
Inventor 朱鹏程夏永锋张冰蔚张维光
Owner JIANGSU UNIV OF SCI & TECH
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