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Showing results for tags 'stepper mechanism'.
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hi guys! ive seen many different designs for stepper mechanisms on youtube (...https://www.youtube.com/watch?v=w1Nj-5ISZow...) primarily to be used for shifting transmissions remotely, but none quite achieve what i'm looking for. all of them use a cam attached to a motor that will advance the mechanism by an increment every time the cam executes one revolution. to control these types, the user would have to listen for the click or look for the effects (ie vehicle speed change) to know to stop driving the motor, which if messed up could lead to overshooting the desired number of shifts or possibly breaking something depending on the design. so my question: has anyone developed a stepper mechanism that advances one increment based off of the motor being accelerated as opposed to rotation count? like if i wanted to shift up i would run the motor, and the motor would increment the mechanism but then keep spinning freely until i tell it to stop, at which point it would 'reset' itself mechanically and be ready to shift again when i want? i doubt just throwing a slipper clutch at one would work because of the high force it takes to actuate such mechanisms, and that wouldnt work in most designs since the force of stopping the cam is the same as shifting, therefore a slipper clutch wouldnt do anything or it would prevent the mechanism from ever shifting. any ideas for this?