摘要:
An elevator system including a structure having a plurality of landings, an elevator car, a drive motor for moving the car relative to the structure to serve the landings, and control apparatus for controlling the drive motor. The control apparatus includes an acceleration transducer which provides a substantially ripple-free stabilizing signal responsive to acceleration by detecting the rate of change of the counter emf of the drive motor. The circuit in which the stabilizing signal is developed is devoid of metallic connection to the drive motor circuit, permitting its use with a solid state source of direct current potential, as well as with a rotating source.
摘要:
A system for generating a motion profile in real time includes a processor. The processor breaks a move into a first phase and a second phase. The first phase includes commanding the move toward a constant velocity segment, and the second phase includes monitoring the first phase to determine when during a move in progress it is necessary to implement a jerk value required to successfully reach end conditions. The processor also transmits command signals based upon the motion profile and calculates the point at which the second phase must take control of the move in progress to reach a target position. The system further includes at least one input/output module that receives command signals. A method for generating a motion profile in real time is also presented.
摘要:
A motor control method/device is provided in which a speed change during a deceleration period is stabilized in performing a speed feedback control of a motor. In the motor control method/device, the speed feedback control is performed such that a speed of a body driven by the motor is consistent with a predetermined target speed. A deceleration directive corresponding to time elapsed since a predetermined deceleration control start timing is generated as the target speed using a deceleration function of the elapsed time, to perform the speed feedback control based on the deceleration directive, during a deceleration control period. The deceleration control period starts from the deceleration control start timing and ends when the driven body is stopped. The deceleration function monotonically decreases from the deceleration control start timing until the deceleration directive becomes zero (0) and its derivative is a monotonically decreasing or increasing function or a constant.
摘要:
A movable barrier operator having an electrical motor responsive to control signals for moving the barrier, a controller to control the barrier movements, and two command apparatuses for generating command inputs, which command apparatuses are located remotely from each other. The first command apparatus is mounted in a location remote from the controller and easily accessible by the users, and the second command apparatus is located close proximity to the controller to be easily accessible by an installer at the time of service.
摘要:
In a control process and control device for motor vehicles with an unfoldable roof, in which at least one roof part or a lid is moved in at least one movement phase defined by a displacement path for the roof part or the lid, the displacement path is bounded by two end positions. By way of an electronic control device, the displacement device for the movement of the roof part or of the lid is actuated such that the speed at which the roof part or the lid is moved is smaller for a first path segment beginning the displacement path and for a second path segment ending the displacement path than the speed for the path segment between the first path segment and the second path segment.
摘要:
A system and method for controlling movement of a body includes a position-based velocity profile, at least one mover, a data processor for calculating a next position of the at least one mover using data from the position-based velocity profile and passing a next position signal to the at least one mover, and an actuator for moving the mover to the next position.
摘要:
A method of reducing torque ripple and noise for an brushless DC machine comprising: determining a control frequency for the electric machine, the control frequency indicative of an existing current command to and a rotational velocity of the electric machine; multiplying the control frequency by a selected multiple and forming a modulating signal responsive thereto; and formulating a modified command profile. The method also includes: correlating and synchronizing the modified command profile with the existing current command and a rotor position for the electric machine; and generating a modulated current command to the electric machine.
摘要:
An apparatus for controlling a driving speed of a motor comprises a motor controller provided in the motor controlling apparatus detecting the motor driving speed in response to pulses outputted from an encoder. The motor controller adjusts a detection period for the pulses according to the motor driving speed, thereby measuring the motor driving speed. The motor controller sets the detection period so that a number of four-multiplied pulses can be a multiple of four. Although a phase difference between pulses outputted from an encoder is not constant, the motor controlling apparatus can obtain a desired response characteristic by excluding effects of a phase error between the pulses.
摘要:
Embodiments of the present invention provide methods and apparatus for controlling seats and for monitoring behavior of power-actuated seats. Certain embodiments permit seat occupancy data, e.g., whether the seat is occupied or a weight-dependent characteristic of the occupant of the seat, to be collected by moving a part of the seat with an actuator. This seat occupancy data may then be used to control other aspects of the seat operation, e.g., set an operational limit of the actuator or reduce auxiliary power to other systems associated with the seat if the seat is unoccupied. For example, part of the seat may be moved with a first actuator, including detecting a control parameter at which the part of the seat begins moving. This control parameter may be correlated to an actuator limit.
摘要:
A movable barrier operator having improved safety and energy efficiency features automatically detects line voltage frequency and uses that information to set a worklight shut-off time. The operator automatically detects the type of door (single panel or segmented) and uses that information to set a maximum speed of door travel. The operator moves the door with a linearly variable speed from start of travel to stop for smooth and quiet performance. The operator provides for full door closure by driving the door into the floor when the DOWN limit is reached and no auto-reverse condition has been detected. The operator provides for user selection of a minimum stop speed for easy starting and stopping of sticky or binding doors.