System and method for selecting and implementing power and motion parameters of a roller shade motor based on load

Patent metadata

Field	Value
Publication number	US-10876354-B2
Application number	US-201715447325-A
Country	US
Kind code	B2
Filing date	Mar 2, 2017
Priority date	Mar 2, 2017
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A system and method are provided herein for adjusting a set of roller shade motor motion parameters of a shade motor for use in a roller shade, the systems and method comprising: engaging the shade motor to move the roller shade a first distance; measuring a first torque level indicator in regard to a power supply voltage being supplied to the shade motor; determining a first torque level based on the measured first torque lever indicator; obtaining a first set of roller shade motor motion parameters from a table based on the first torque level; and applying the first set of roller shade motor motion parameters to the shade motor whenever the roller shade is directed to lift or lower the roller shade.

First claim

What is claimed is:

1. A method for adjusting a set of roller shade motor motion parameters of a shade motor for use in a roller shade, comprising:
engaging the shade motor to move the roller shade a first distance;
measuring a first torque level indicator in regard to a power supply voltage being supplied to the shade motor during movement of the roller shade through the first distance;
determining a first torque level based on the measured first torque level indicator;
obtaining a first set of roller shade motor motion parameters from a table based on torque levels; and
applying the first set of roller shade motor motion parameters to the shade motor whenever the roller shade is directed to lift or lower the roller shade, wherein the first torque level indicator comprises:
a first phase shift difference measured between current input to a power supply voltage being supplied to the shade motor during movement of the roller shade over the first distance, and a shaft angular position, wherein a shaft is used to rotationally raise and lower the roller shade, and further wherein the steps of engaging and measuring comprise:
engaging the shade motor to lift the roller shade a first height and measuring a shade-up current level;
engaging the shade motor to lower the roller shade a second height and measuring a shade-down current level;
averaging the shade-up current level and shade-down current level to determine an average current level; and
determining a shade motor torque level based on the average current level.

2. The method according to claim 1 , wherein
the first distance equals a first upward movement distance and a first downward movement distance.

3. The method according to claim 1 , wherein the first torque level indicator comprises:
a first current level in the power supply voltage being supplied to the shade motor during movement of the roller shade over the first distance.

4. The method according to claim 3 , wherein the table based on torque levels comprises:
a plurality of motor motion parameters for each of n different ranges of torque values.

5. The method according to claim 4 , wherein the plurality of motor motion parameters comprise:
at least one of (a) a set of proportional, integrative, and derivative (PID) values, (b) a PID sampling frequency; (c) a minimum speed of the roller shade motor; a commutation method; (d) a ramp-up boost value; and (e) a ramp-damp boost value.

6. The method according to claim 1 , wherein the table based on torque levels comprises:
a plurality of motor motion parameters for each of n different ranges of torque values.

7. The method according to claim 6 , wherein the plurality of motor motion parameters comprises:
at least one of (a) a set of proportional, integrative, and derivative (PID) values, (b) a PID sampling frequency; (c) a minimum speed of the roller shade motor; a commutation method; (d) a ramp-up boost value; and (e) a ramp-damp boost value.

8. A method for adjusting a set of roller shade motor motion parameters of a shade motor for use in a roller shade, comprising:
engaging the shade motor to move the roller shade a first distance;
measuring a first torque level indicator in regard to a power supply voltage being supplied to the shade motor during movement of the roller shade through the first distance;
determining a first torque level based on the measured first torque level indicator;
obtaining a first set of roller shade motor motion parameters from a table based on torque levels; and
applying the first set of roller shade motor motion parameters to the shade motor whenever the roller shade is directed to lift or lower the roller shade, wherein the first torque level indicator comprises:
a first phase shift difference measured between current input to a power supply voltage being supplied to the shade motor during movement of the roller shade over the first distance, and a shaft angular position, wherein a shaft is used to rotationally raise and lower the roller shade.

9. The method according to claim 8 , wherein the steps of engaging and measuring comprise:
engaging the shade motor to lift the roller shade a first height and measuring a shade-up current level;
engaging the shade motor to lower the roller shade a second height and measuring a shade-down current level;
averaging the shade-up current level and shade-down current level to determine an average current level; and
determining a shade motor torque level based on the average current level.

10. The method according to claim 8 , wherein
the first distance equals a first upward movement distance and a first downward movement distance.

11. The method according to claim 8 , wherein the first torque level indicator comprises:
a first current level in the power supply voltage being supplied to the shade motor during movement of the roller shade over the first distance.

12. The method according to claim 11 , wherein the table based on torque levels comprises:
a plurality of motor motion parameters for each of n different ranges of torque values.

13. The method according to claim 12 , wherein the plurality of motor motion parameters comprise:
at least one of (a) a set of proportional, integrative, and derivative (PID) values, (b) a PID sampling frequency; (c) a minimum speed of the roller shade motor; a commutation method; (d) a ramp-up boost value; and (e) a ramp-damp boost value.

14. The method according to claim 8 , wherein the table based on torque levels comprises:
a plurality of motor motion parameters for each of n different ranges of torque values.

15. The method according to claim 14 , wherein the plurality of motor motion parameters comprises:
at least one of (a) a set of proportional, integrative, and derivative (PID) values, (b) a PID sampling frequency; (c) a minimum speed of the roller shade motor; a commutation method; (d) a ramp-up boost value; and (e) a ramp-damp boost value.

Assignees

• Crestron Electronics Inc

Inventors

• Rivera Luis

Classifications

• E06B2009/6854

  sensing torque · CPC title

• E06B2009/6809

  Control · CPC title

• E06B9/72 Primary

  comprising an electric motor positioned inside the roller · CPC title