Hard rod control system

A technology of control system and hard rod, which is applied in the direction of electric controller, theodolite, etc., can solve the problems of electromagnetic field interference and poor interchangeability, and achieve the effect of friendly man-machine performance, convenient operation and simple control method

Inactive Publication Date: 2014-01-22
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing hard rod control system has poor interchangeability; the signal changes with temperature, and a single-chip microcomputer is required to correct the nonlinear output; it is susceptible to electromagnetic field interference

Method used

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Embodiment Construction

[0027] like figure 1 , the principle of the present invention is: the analog voltage signals La and Le output by the strain gauges in the horizontal direction and the vertical direction strain gauges are sent to the hard rod regulator, and the small change amount of the strain resistance is converted into -10V~+10V through the conversion circuit. The voltage changes Ua and Ue, Ua and Ue are sent to the speed regulator, and the strain voltage changes Ua and Ue are transformed into voltage control signals Va and Ve of the azimuth servo motor and pitch servo motor of the theodolite with high sensitivity through the speed feedback loop ; The signals Va and Ve are connected to the motor of the theodolite through the cable output; thereby realizing the man-machine intelligent remote control of the theodolite.

[0028] The hard rod control system is composed of a pure hardware circuit, including a hard rod regulator and a speed regulator which are sequentially connected with the hard...

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PUM

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Abstract

The invention provides a hard rod control system, which solves the problem of semiautomatic tracking of a hard rod of a theodolite. The hard rod control system comprises a hard rod adjuster and a speed adjuster which are connected with the hard rod in sequence, wherein the speed adjuster is connected with a controlled instrument; the hard rod adjuster comprises an electric bridge circuit, a first branch and a second branch; both the first branch and the second branch comprise a weak signal differential amplification and balance circuit, a low-pass filter circuit, a zero drift adjusting circuit, a gain adjusting and characteristic adjusting circuit and an amplitude limiting and amplifying circuit which are connected in sequence. The hard rod control system has the advantages of simple control method, convenience in operation, functions of random handle shaking direction, automatic temperature compensation and electromagnetic interference prevention, high sensitivity, high return accuracy and low cost.

Description

technical field [0001] The invention belongs to the field of electromechanical integration servo control systems, and in particular relates to a hard rod control system. Background technique [0002] The hard rod control system is widely used in the remote or ultra-remote control of theodolite to realize the semi-automatic tracking, orientation and capture functions of theodolite to the target. The hard rod actuator (i.e. handle, or joystick) is divided into hard rod and soft rod, and the hard rod has better return accuracy and anti-vibration performance; when the hard rod handle is pulled, the offset vector away from the center position , which reflects the rotation direction and size of the motor, and the speed at which the handle of the hard rod is pulled reflects the rotation speed of the motor. The measurement of the offset is commonly used with infrared optical sensors, Hall sensors, and force-sensitive sensors. The force-sensitive sensor has the characteristics of lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/01G01C1/02
Inventor 王鲜红马彩文梁雁冰李艳
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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