An integrated digital motion control unit

• Published in: IEEE transactions on instrumentation and measurement Vol. 40; no. 3; pp. 654 - 657
• Main Authors: Pasanen, J., Jahkonen, P., Ovaska, S.J., Vainio, O., Tenhunen, H.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-06-1991; Institute of Electrical and Electronics Engineers
• Subjects: Acceleration; Application specific integrated circuits; Applied sciences; Building mechanical equipments (elevators, goods lifts, escalators); Building technical equipments; Buildings; Buildings. Public works; Digital signal processing; Elevators; Exact sciences and technology; Integrated circuit technology; Motion control; Motion planning; Safety; Signal generators; Tracking; Digital control; Automation; Digital filter; Opening; Signal processing; Digital processing; Elevator door; Block diagram; Implementation; ASIC circuit
• ISSN: 0018-9456; 1557-9662
• DOI: 10.1109/19.87040

A digital motion control system is presented with primary applications in automatic elevator doors. Digital signal processing methods are used for generating exponential waveforms for the drive motor. The unit keeps track of the actual speed of motion and the corresponding door position. Thus the time consumed by door motion is minimized, and smooth acceleration and deceleration phases are achieved. The proposed algorithm results in an efficient bit-serial application specific IC (ASIC) implementation.< >