Mechanism Startup Calculator - AMB Robotics Calculator

Free Speed rpm

Stall Torque

Free Current Amps

Stall Current Amps

Number of Motors

Provided Voltage Volts

Stator Current Limit Amps

Radius

Mass

Load Force

Efficiency %

Position

Velocity

Target Distance

Target Velocity

Stopping Type

Timestep ms

Max Time sec

Ratio Range: :1 – :1

Simulation Ratio: : 1

Time To Target: s

Note: This simulation runs the motor constantly at the specified voltage until the target is reached. It does not account for closed-loop control, motion profiling, etc. To account for this, consider increasing the gear ratio slightly.

Example Uses

Arm: You need to lift a load using an arm driven by a motor. Enter the motor type, number of motors, motor voltage, and current limit. For radius, enter the length of the arm (specifically the distance from axis of rotation to arm's center of mass). For mass, enter the mass of the arm. For load force, enter the effective weight of the arm after accounting for any counter-balancing, plus the load it needs to lift. Choose to stop according to position, and set the angle the arm needs to travel as the target position for the system. Check the ratio graph to see how different gear ratios affect the time it takes the arm to reach the target angle. Try out different ratios on the simulation graph to see how the system responds.

Flywheel Shooter: You have a flywheel shooter and want to know how fast it will spin up. Enter the motor type, number of motors, motor voltage, and current limit. For radius, enter the radius of the flywheel. For mass, enter the mass of the flywheel plus approximate weights for the gears in the gearbox. For load force, enter either zero or a small value to account for friction. Choose to stop according to velocity, and set the speed you want the flywheel to reach as the target velocity for the system. Check the ratio graph to see how different gear ratios affect the time it takes the flywheel to get to speed. Try out different ratios on the simulation graph to see how the system responds.

Elevator: You need to lift a load with a motor connected to a linear elevator system. Enter the motor type, number of motors, motor voltage, and current limit. For radius, enter the radius of the pulley, sprocket, or drum driving the elevator. For mass, enter the mass of the elevator carriage. For load, enter the effective weight of the elevator carriage after accounting for counterbalancing, plus the load it needs to lift. Choose to stop according to position, and set the distance the elevator needs to travel as the target position for the system. Check the ratio graph to see how different gear ratios affect the time it takes the elevator to reach the target position. Try out different ratios on the simulation graph to see how the system responds.