Abstract:
An automatic angle-measured apparatus includes a driving unit coupled with a clamping plate and a driving seat, an encoding unit located at an end of the driving unit facing the driving seat and signally connected to the driving unit, at least one attitude sensor located at the driving seat, and a control unit signally connected to the encoding unit and the attitude sensor. The attitude sensor senses the un-rotated and the rotated driving seat to generate a first and a second signals, respectively. The control unit bases on the first and the second signals to calculate an offset. The control unit controls the driving unit to rotate a predetermined angle. The encoding unit bases on the predetermined angle to generate location information. The control unit bases on the first signal, the second signal and the location information to calculate angle information and compensation for performing a correction procedure.
Abstract:
An apparatus for electrical discharge machining modulation control includes an EDM module, an open-circuit voltage modulation module, a reference-voltage modulation and judgment module, a database, and a control unit. The control unit selects a reference voltage, and an open-circuit voltage corresponding to characteristics of a workpiece from the database, and generates and transmits a second control signal to the open-circuit voltage modulation module for modulating the open-circuit voltage, and a third control signal to the reference-voltage modulation and judgment module for modulating the reference voltage utilised to determine if the ignition happened. The open-circuit voltage modulation module receives a first control signal periodically transmitted from the control unit for providing the open-circuit voltage to the EDM module. The reference-voltage modulation and judgment module performs an arc voltage measurement procedure, then the control unit determines the open-circuit voltage and the reference voltage.