A console with can interface

Abstract

The invention provides a console of a CAN interface. A mechanical handle transmits a rotation angle quantity operated by an operator to two vertically installed angle measurement potentiometers, the angle measurement potentiometers output voltage which is converted into a range sampling quantity and a height acquisition quantity by a signal conditioning circuit, AD conversion and numerical filtering are carried out in a single chip microcomputer, and a generated digital quantity is subjected to nonlinear function transformation, maximum speed limit and maximum acceleration limit. The output of the single chip microcomputer is transmitted to a servo control box through a CAN bus. The console has the advantages of small power supply interference, high conversion precision, simple structure, convenient operation and low cost.

Description

technical field [0001] The invention relates to product design of a motion control console and a joystick of a servo system. Background technique [0002] The semi-automatic control method of the follow-up system generally adopts the traditional analog console and joystick for operation. The principle block diagram is as follows: figure 1 shown. The pulling angle of the console on the servo system represents the speed of the servo system. The working principle of the traditional console is to transmit the angle signal of the operator's hand wrench to the angle measuring potentiometer through mechanical transmission, and convert it into an analog signal. The voltage signal output is transmitted to the follow-up control box through the signal transmission cable, and is controlled and switched inside the follow-up control box, and then the analog voltage signal is converted into a digital quantity by AD conversion, and sent to the digital follow-up control computer, and the fo...

AI Technical Summary

Problems solved by technology

[0004] 1) The angle measuring potentiometer of the console uses an external precision power supply. The accuracy of the external precision power supply directly affects the accuracy of the angle measurement. The precision power supply is generally installed in the servo control box and shares the power supply with other loads, causing mutual interference and causing power failure. Fluctuation; the line between the power supply and the goniometer potentiometer of the console is long, generally more than 3 meters, which is likely to cause interference and cause loss of power supply accuracy; the consequence is to directly affect the output accuracy of the console and indirectly affect the accuracy of the follow-up control, resulting in a follow-up system. Unstable control and zero position drift bring difficulty to the operator and affect the aiming accuracy and shooting accuracy of the semi-automatic mode

[0005] 2) The analog signal output by the goniometer potentiometer of the console needs to be transmitted from the console to the follow-up control box due to the large internal resistance and low power of the output signal. The transmission distance is long and it is easy to cause interference; the consequences are the same as the first one

[0006] 3) The goniometer potentiometer of the console uses multiple sets of high-precision nonlinear function potentiometers, and the price is extremely high

The curve function corresponding to the potentiometer can only be customized during the design and production of the manufacturer, and cannot be upgraded later

[0007] 4) There are many communication lines, and the general console needs 9-core signal lines

[0008] 5) It is necessary to perform AD conversion and numerical filtering on the servo control computer inside the servo control box, which increases the calculation workload of the servo control computer and takes up the machine time of the servo control computer.

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