A Method of Using Interpolation to Calculate Power Consumption of Steering Gear

A servo and interpolation technology, applied in the field of calculating the power consumption of the servo by interpolation, can solve the problems that the power consumption cannot truly reflect the servo, the design of the battery capacity is excessive, and the output capacity of the servo is not enough, so as to achieve easy engineering realization and constant efficiency. The effect of accurate values ​​and no singularities

Active Publication Date: 2017-12-22
CHINA ACAD OF LAUNCH VEHICLE TECH
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Problems solved by technology

In the traditional model design, the efficiency of the steering gear is constant, and the power consumption calculated from this cannot truly reflect the actual working conditions of the steering gear. The output capability of the steering gear is not enough to affect the success or failure of the flight

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  • A Method of Using Interpolation to Calculate Power Consumption of Steering Gear
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  • A Method of Using Interpolation to Calculate Power Consumption of Steering Gear

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0028] The aircraft servo system operates according to the GNC system instructions, and it needs sufficient thrust and speed to achieve the required control ability and precision. The output power of the steering gear of the servo system depends on the load torque and rotational speed. Due to the mechanical loss of the transmission mechanism and the heat loss of electronic components in the steering gear, the required power consumption is greater than the actual output power.

[0029] The power consumption required by the steering gear is equal to the product of the input voltage and input current of the motor, and the output power of the steering gear is equal to the product of the output torque of the output shaft of the steering gear (that is, the flight load torque) and the output speed, namely:

[0030] P out = M out · ω out (1)

[003...

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Abstract

The invention provides a method for calculating power consumption of a steering engine by interpolation. According to the method, steering engine efficiency with different steering engine output torques at different rotating speeds is firstly obtained by testing at set test points; and then, interpolation function of output torque, output rotating speed and steering engine efficiency is formed, and steering engine efficiency of various hinge moments at various speeds is calculated through interpolation. The steering engine efficiency is more accurate in comparison with a traditional constant efficiency value. In addition, interpolation calculation of the steering engine efficiency is realized by binary cubic sampling interpolation algorithm. The algorithm is simple, has good numerical stability, has no singular point and is easy for engineering realization.

Description

technical field [0001] The invention relates to the technical field of servo system design, in particular to a method for calculating the power consumption of a steering gear by interpolation, which is applied in the aerospace field to estimate the power consumption of a steering gear in a servo system. Background technique [0002] In aerospace missile weapons and other aircraft, a large number of servo systems are used as the control mechanism to control the deflection of the rudder surface according to the command, and generate the required aerodynamic moment to realize the attitude trajectory control of the aircraft. [0003] The thrust and speed generated by the servo system directly affect the control ability and precision of the aircraft, while the efficiency of the steering gear determines the power consumption and carrying capacity of the servo system, directly affects the volume and weight of the servo system, and then restricts the quality of the aircraft. [0004...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/00
Inventor 刘小军石庆峰张声艳郎鹏飞杨友超刘洋胡欣赵岩李海伟
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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