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How to calculate the force created by the servo motor using the rosserial_arduino library

asked 2019-05-09 10:35:43 -0500

hasona gravatar image

updated 2019-05-09 10:37:09 -0500

I'm using a servo motor to build a braking system inside the bicycle and I want to measure the braking force that will be delivered by the servo motor to the wheels in order to control the braking system.

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answered 2019-05-12 01:43:05 -0500

chrisalbertson gravatar image

There are two ways I can think of to measure the force or torque of a motor.

1) Measure the current with a Hall effect current sensor. Torque is proportional to current. Or go "openlop" just record the PWM duty cycle and assume current and force are proportional to PWM.

2) Use a resilient mount for the motor so that the motor moves against some kind of spring or rubber as it applies torque then you measure the motor's displacement. ANy kind of spring in the link can be used. One system I say used a flexible shaft coupler and measure the amount of "twist" Also, the reaction movement need not be large. You can measure torque with a stain gauge or load cell

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Asked: 2019-05-09 10:35:43 -0500

Seen: 32 times

Last updated: May 12 '19