摘要:
A control device for a work carrying system characterized in that a first point where the moving action of a work transitions from a moving action from an origin process chamber to a transfer chamber to a moving action inside the transfer chamber and a second point where the moving action of the work transitions from the moving action inside the transfer chamber to a moving action from the transfer chamber to a destination process chamber are set on a moving path of the work, and that speed patterns on the moving path are set based on a transfer distance of the work and time required to open and close gate means of the origin and destination process chambers such that the opening of a gate valve at the destination is completed when the work reaches the second point on the moving path and that a transfer time from the first point to the second point becomes the shortest time which is longer than the opening and closing time of the gate valve, the speed of a work carrying robot being controlled in accordance with the set speed patterns, whereby any chance of the robot being temporarily stopped is minimized so as to effect high-speed carrying of a work such as a wafer requiring a shortest possible carrying time.
摘要:
The invention serves to take account of the reaction time of an item of equipment to be driven which, when a travel reference value, serving as a way-mark, is reached on a travel of an item of equipment in an industrial plant, is intended to be activated or deactivated, the travel being able to be covered at different speeds. The invention has the following elements: a position transmitter to register the actual value of the travel, means for storing the reaction time of the item of equipment to be driven, means for storing a first actual value of the travel ("starting actual value"), means for storing a second actual value of the travel after a time period corresponding to the reaction time of the item of equipment to be driven has elapsed ("final actual value"), means for determining a current magnitude of a lead travel by subtracting the first stored actual value from the second, and means for reducing the travel reference value ("corrected travel reference value") or increasing the actual value of the travel ("dynamized actual value") by the current magnitude of the lead travel.
摘要:
A sealing gun (31) of a sealant application unit, which controls the flow of the sealant in accordance with the value of an input signal, is attached to the end of a robot arm. The value of a signal applied to the sealant application unit (30) is controlled in association with acceleration/deceleration control of the moving speed of the sealing gun. The moving speed (TSA) of the sealing gun and the flow (SC) of the sealant discharged from the sealing gun are in direct proportion; therefore, the bead width becomes uniform independently of the moving speed (TSA) of the sealing gun.
摘要:
A rotational position, velocity and acceleration of an electrical motor are detected and an amount of overrun produced when the motor has stopped is estimated from the detected velocity and acceleration, and at least one of motor position detection data and a positioning target value is changed in accordance with the estimated amount of overrun. The position detection data and the positioning target value after the change are compared with each other and a command for stopping the motor is generated in accordance with a result of this comparison. A brake is applied to the motor in advance by the amount of the estimated overrun so that the motor is stopped at a desired target position after making overrun. Further, velocity setting signals are generated in accordance with desired acceleration and deceleration characteristics and the velocity control of the motor is effected in an open loop in response to the velocity setting signals. By the stop and velocity controls of an open loop system, positioning control of the motor of the open loop system can be accurately performed.