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Measurement control method taking DC electric machine as force measuring device and realizing device thereof

A DC motor, measurement and control technology, applied in the direction of measuring device, motor generator test, force measurement, etc., can solve the problems of difficult determination of threshold value, high cost, complex structure of controller and device, etc., to prevent abnormal working state Effect

Active Publication Date: 2008-03-05
南京康龙威康复医学工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method in the prior art is used to control the device containing the DC motor, and its disadvantage is that the controller and the device are complicated in structure and high in cost
At present, there is still a measurement and control method for DC motor devices in the prior art, which implements control by measuring the armature current. The disadvantage of this method is that due to the dispersion of motor parameters, the determined valve The value is not easy to determine; when the current is disturbed, it is easy to misjudge; the rotor angle, number of rotations, and speed cannot be measured
The current system that realizes control by measuring the external force of the DC motor must input the power required by the load cell through the wire and output the signal generated by the sensor during use, so that the traditional sensor cannot be used in continuous rotation; In addition, DC motors are now used as power components, ignoring the role of signals from DC motors

Method used

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  • Measurement control method taking DC electric machine as force measuring device and realizing device thereof
  • Measurement control method taking DC electric machine as force measuring device and realizing device thereof

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Experimental program
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Embodiment 1

[0027] Referring to Fig. 1 and Fig. 2, describe in detail the measurement control method of the present invention, in step 101, set the operating state of DC motor 1 under the action of external force by digital circuit integrated chip 4 according to the output value of judging signal input module 5; Step 102, the DC motor 1 rotates at a certain speed under the set working state; step 103, directly output the analog signals of the voltage v and current i of the DC motor 1 running under the action of external force, and the encoder 2 converts the DC motor 1 speed The signal n is directly sent to the digital circuit integrated chip 4; step 104, through the measuring circuit 3, the analog signal of the voltage v and current i of the DC motor 1 running under the action of external force is converted into a signal that meets the requirements of the digital circuit integrated chip; step 105 , the operation control circuit 4 calculates the numerical value of the external force that th...

Embodiment 2

[0033] Combined with the purpose and working principle of the present invention, it can be further applied to electric bicycles for medical rehabilitation. The DC motor is connected with the pedal through the electric bicycle rotating arm, and the electric bicycle rotating arm and the pedal are connected by a movable hinge, and the DC motor is controlled by the realization device of the present invention. By judging the working mode selected by the signal input device, the user can control the motor to drive the pedal to rotate at a speed of ten circles per minute. At the same time, the digital circuit integrated chip measures in real time the force exerted by the motor on the DC motor when the user steps on it: when the detected force changes within the set force value range, the device can slow down or increase it according to the user's force condition. The speed of the motor is to improve the rehabilitation effect; when the user's leg has cramps or stiffness and other bad ...

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Abstract

The method comprises: setting the working state of DC motor under the exogenic action; the DC motor runs at said workings state; detecting the analog signal of the voltage v, current i and rotate speed n to be detected, and converting said analog signal into digital signals; according to the testing signal, calculating the value of exogenic action suffered by the DC motor; detecting the acting force suffered by the DC motor to decide if it is in a preset range, and adjusting the working state of the DC motor. The invention also reveals a DC motor thereof used for measuring the acting force suffered by the DC motor and adjusting the working state of the motor.

Description

technical field [0001] The present invention relates to a method for measuring and controlling a DC motor as a force-measuring device and its implementation device, in particular to a control method for real-time measurement of the external force received by a DC motor and its implementation device, which is applied to the design and manufacture of DC motors Control device equipment. Background technique [0002] DC motors are widely used in various production activities such as industry, agriculture, and transportation. The measurement and control device of the DC motor, and the DC motor and the devices connected to it can implement the control of various electromechanical equipment to achieve predetermined functions. To control devices containing DC motors, their speed, stroke, and position must first be known. Existing technology usually adopts sensors such as Hall sensors, photoelectric sensors, tachogenerators, and travel switches to realize. The method in the prior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/00G01R31/34
Inventor 施宏
Owner 南京康龙威康复医学工程有限公司
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