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Precise control method of rudder speed and position for electromechanical hydrostatic servo system

A servo system and precise control technology, applied in the direction of motor generator control, control of electromechanical brakes, AC motor control, etc., can solve the problems of single control variable and high noise, achieve effective protection mechanism, eliminate startup noise, and reduce vibration. Effect

Active Publication Date: 2020-09-18
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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Problems solved by technology

[0003] The technical problem solved by the present invention is: to overcome the large noise of the prior art, to provide a precise control method of the rudder speed and position of the electromechanical static pressure servo system, to solve the problem of single control variable of the traditional servo system, and to ensure the system dynamics and steady-state characteristics, and can greatly reduce system noise

Method used

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  • Precise control method of rudder speed and position for electromechanical hydrostatic servo system

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Embodiment

[0024] The stroke of the servo mechanism used in a certain project is ±300mm, the required maximum rudder speed is ±30mm / s, the position accuracy is ±1mm, the controllable average speed accuracy is ±3mm / s, the motor speed is 0~±1800rpm, the position (rudder Angle) mode, when the set position is a specific position, the position sensor connected to the actuator will detect the position of the steering gear in real time, and calculate the average steering speed according to the 100ms cycle. When the average speed of the steering gear deviates from the maximum steering speed , adjust the extreme value of the motor speed limit, so that the current rudder speed follows the maximum rudder speed, and its absolute value is maintained within the range of 30mm / s. Inertia, the average rudder speed measured at this time is relatively low, and the rudder speed at this time is set at a speed of 20mm / s to prevent the motor speed from being too high and the mechanism to vibrate to ensure a smo...

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Abstract

The invention relates to a rudder speed and position precise control method of an electromechanical static pressure servo system and belongs to the technical field of high-precision thrust vector control servo systems. The method of the invention, by precisely controlling the starting rudder speed, realizes soft start, eliminates start noise, and smoothly transitions to a steady state. By adding the rudder speed compensation, the method ensures that the system can smoothly operate at a set rudder speed under any working condition. By virtue of position protection, the method ensures that a mechanism is not damaged under the operation at the set rudder speed, can provide high controllable steady-state performance and low noise and achieves a rudder speed and position dual-control effect.

Description

technical field [0001] The invention relates to a precise control method for rudder speed and position of an electromechanical static pressure servo system, and belongs to the technical field of high-precision thrust vector control servo systems. Background technique [0002] Traditional high-power servo control uses hydraulic station and servo valve to control, which is noisy, unstable, restricted by the whole system, and has low reliability. The electromechanical hydrostatic servo system has the characteristics of small size, low noise, easy maintenance, flexible control, and self-contained system. It is very suitable for systems that require low noise, high power output, high reliability, multiple redundant parallel connections, and long-term operation. Traditional servo control is mainly based on position control, emphasizing dynamic response performance, while some scenarios need to focus on highly controllable steady-state performance, and the stability and low noise o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/05H02P27/06
CPCH02P21/05H02P27/06
Inventor 曾宪科王岩李东东张芳张玉强
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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