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TRINAMIC - coolStep in Action - Demo
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This video is an impressive demonstration of the coolstep™
feature of Trinamic's new TMC262 integrated stepper driver IC.
Stepper motors are basically known as being inefficient because a lot of energy is typically dissipated as waste heat. This is a well-known problem since stepper motors are used in many different industries and are responsible for a large ammount of the total industrial power consumption.
coolStep™ is a unique mechanism, which results in energy savings of up 70-80%, depending on the application. With coolStep™ enabled, the actual load at the motor shaft is measured. With a control loop, the current used to power the motor coils is adapted to the level needed to drive the motor: instead of powering the motor coils with a fixed current.
In the demonstration, the same setup is used and recorded two twice. Once with coolStep™ disabled and once with coolStep™ enabled. The test setup is based on a heavy and massive iron gear, which is used for, e.g., pylon-mounted devices with Azimuth rotation. A small stepper motor and a control unit with a TMC262 integrated stepper driver is mounted to the gear. The energy source is a supercapacitor module with a capacity of 150F and a maximum voltage of 17V. In both cases this supercapacitor is charged to exactly 16V. Notice, two multimeters are used to show each demonstrations voltage and current .
After connecting the supercapacitor module, the control unit starts rotating the gear and switching direction every minute. That is why you see a back and forth movement of the gear. Especially when accelerating and decelerating, a stepper motor requieres much energy.
Without coolStep™ enabled, this setup stopped movement after ca. 10 minutes. With the coolStep™ feature enabled, the setup stopped after approximately 20 minutes!
With coolStep™ enabled the operation window is twice as long as without. Or in other words - you need only half the battery capacity or at least a smaller energy reservoir for the same up-time.
In the end - saving energy means saving costs as well as protecting the environment.
feature of Trinamic's new TMC262 integrated stepper driver IC.
Stepper motors are basically known as being inefficient because a lot of energy is typically dissipated as waste heat. This is a well-known problem since stepper motors are used in many different industries and are responsible for a large ammount of the total industrial power consumption.
coolStep™ is a unique mechanism, which results in energy savings of up 70-80%, depending on the application. With coolStep™ enabled, the actual load at the motor shaft is measured. With a control loop, the current used to power the motor coils is adapted to the level needed to drive the motor: instead of powering the motor coils with a fixed current.
In the demonstration, the same setup is used and recorded two twice. Once with coolStep™ disabled and once with coolStep™ enabled. The test setup is based on a heavy and massive iron gear, which is used for, e.g., pylon-mounted devices with Azimuth rotation. A small stepper motor and a control unit with a TMC262 integrated stepper driver is mounted to the gear. The energy source is a supercapacitor module with a capacity of 150F and a maximum voltage of 17V. In both cases this supercapacitor is charged to exactly 16V. Notice, two multimeters are used to show each demonstrations voltage and current .
After connecting the supercapacitor module, the control unit starts rotating the gear and switching direction every minute. That is why you see a back and forth movement of the gear. Especially when accelerating and decelerating, a stepper motor requieres much energy.
Without coolStep™ enabled, this setup stopped movement after ca. 10 minutes. With the coolStep™ feature enabled, the setup stopped after approximately 20 minutes!
With coolStep™ enabled the operation window is twice as long as without. Or in other words - you need only half the battery capacity or at least a smaller energy reservoir for the same up-time.
In the end - saving energy means saving costs as well as protecting the environment.
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