- #1
How to Calculate Required Torque for Mini Servo on Slider?
- Thread starter mountainchicken46
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- Calculation Torque
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Discussion Overview
The discussion centers on calculating the required torque for a mini servo to move a load on a slider, specifically in the context of a slider-crank mechanism. Participants explore the implications of holding a load versus accelerating it, as well as the mechanics involved in achieving a constant velocity.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- Some participants inquire whether the goal is to hold the slider against a load or to accelerate it, suggesting that the required torque may differ based on this distinction.
- There is a request for clarification on the configuration of the mechanism, including the number of parts and their relative movements.
- One participant notes that moving the load at a constant velocity will necessitate varying the crank speed, raising questions about the control of this speed.
- Concerns are expressed regarding the limited range of motion of the slider and the need for the velocity to approach zero at the ends of this range to facilitate reversal.
Areas of Agreement / Disagreement
Participants have not reached a consensus, as multiple competing views and questions remain regarding the mechanics of the system and the specifics of the torque calculation.
Contextual Notes
Limitations include the lack of specific details about the load, the mechanism's configuration, and the desired acceleration rate, which may affect the torque calculation.
- #2
berkeman
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Welcome to PhysicsForums. 
You go first...mountainchicken46 said:
- #3
Dr.D
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What you have is a highly offset slider-crank mechanism.
Are you concerned with simply holding the slider against a load, or do you want to accelerate the slider? If you want to accelerate the slider, then at what rate? You need to give us a bit more to work with.
Are you concerned with simply holding the slider against a load, or do you want to accelerate the slider? If you want to accelerate the slider, then at what rate? You need to give us a bit more to work with.
- #4
Baluncore
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I am confused.
How many separate parts are there ?
What can move relative to what ?
What bits are the fixed frame or chassis ?
How many separate parts are there ?
What can move relative to what ?
What bits are the fixed frame or chassis ?
- #5
mountainchicken46
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I want to move the load (it is actually a heater) that was mounted on the slider at 0.5m/s either to the left or right.Dr.D said:
- #6
Dr.D
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A constant velocity on the velocity will require a variable crank speed. Are you prepared to control crank speed to vary in a specific way?
I hope you are aware that the slider moves only over a limited range. As you approach the ends of the range, the velocity must approach zero in order to reverse. Is this satisfactory for your purposes?
I hope you are aware that the slider moves only over a limited range. As you approach the ends of the range, the velocity must approach zero in order to reverse. Is this satisfactory for your purposes?
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