Patent ID: 6246916
Filing Date: 2001-06-12
Classification: G05B

Abstract:
A method of providing passive feedback for controlling a drive system comprising the steps of:providing a programmable switch for facilitating controlling the operation of said drive system;programming said programmable switch with a first programmed setpoint corresponding to a first position of said drive system, a second programmed setpoint corresponding to a second position of said drive system, a first initial trigger point corresponding to when said drive system performs a first change from a first speed to a second speed, and a second initial trigger point corresponding to when said drive system performs a second change from said second speed to a third speed;energizing said drive system;using said first and second initial trigger points to effect said first and second changes, respectively;determining a first actual setpoint corresponding to a first actual position and a second actual setpoint corresponding to a second actual position;comparing said first programmed setpoint to said first actual setpoint and said second programmed setpoint to said second actual setpoint and adjusting at least one of said first initial trigger point or said second initial trigger point to provide an adjusted first trigger point or an adjusted second trigger point, respectively, in response to said comparison; andrepeating said energizing, triggering, determining and comparing steps and if said first and second actual setpoints are not within a predetermined tolerance range of said first and second programmed setpoints, respectively, then repeating said adjusting step.