Invention Application
- Patent Title: HVAC ACTUATOR WITH SOFT STALL CONTROL
- Patent Title (中): 具有软控制的暖通空调执行器
-
Application No.: US14809119Application Date: 2015-07-24
-
Publication No.: US20150333669A1Publication Date: 2015-11-19
- Inventor: Robert K. Alexander , Gary A. Romanowich
- Applicant: Johnson Controls Technology Company
- Applicant Address: US MI Holland
- Assignee: JOHNSON CONTROLS TECHNOLOGY COMPANY
- Current Assignee: JOHNSON CONTROLS TECHNOLOGY COMPANY
- Current Assignee Address: US MI Holland
- Main IPC: H02P6/08
- IPC: H02P6/08 ; G05B1/01 ; H02P6/00

Abstract:
A actuator in a HVAC system includes a motor and a drive device driven by the motor. The drive device is coupled to a movable HVAC component for driving the movable HVAC component between multiple positions. The actuator further includes a main actuator controller that determines when the drive device is approaching an end stop and a pulse width modulation (PWM) speed controller that generates a PWM speed output for controlling a speed of the motor. The PWM speed controller sets the PWM speed output to zero in response to a determination that the drive device is approaching the end stop. The PWM speed controller then increases the PWM speed output until the end stop is reached, thereby causing the speed of the motor to increase as the drive device approaches the end stop.
Public/Granted literature
- US09465370B2 HVAC actuator with soft stall control Public/Granted day:2016-10-11
Information query