US 11,669,651 B2
Design assist apparatus, design assist method, and design assist program for a mechanical device driven by a feedback controlled electric motor
Ryuta Sato, Hyogo (JP); Atsushi Nagao, Fukuoka (JP); Takeshi Hashimoto, Kanagawa (JP); and Taichi Sasaki, Kanagawa (JP)
Assigned to MIKI PULLEY CO., LTD, Kanagawa (JP); and NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, Hyogo (JP)
Appl. No. 16/955,341
Filed by MIKI PULLEY CO., LTD., Kanagawa (JP); and NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, Hyogo (JP)
PCT Filed Dec. 17, 2018, PCT No. PCT/JP2018/046419
§ 371(c)(1), (2) Date Jun. 18, 2020,
PCT Pub. No. WO2019/124324, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. JP2017-242589 (JP), filed on Dec. 19, 2017.
Prior Publication US 2021/0012043 A1, Jan. 14, 2021
Int. Cl. G06F 30/17 (2020.01); G06F 30/20 (2020.01); G05B 11/38 (2006.01); G05B 11/40 (2006.01); G05D 3/20 (2006.01); H02P 29/00 (2016.01); G06F 111/10 (2020.01); G06Q 30/06 (2023.01); G06Q 50/04 (2012.01); G06Q 30/0601 (2023.01)
CPC G06F 30/17 (2020.01) [G05B 11/38 (2013.01); G05B 11/40 (2013.01); G05D 3/20 (2013.01); G06F 30/20 (2020.01); H02P 29/00 (2013.01); G06F 2111/10 (2020.01); G06Q 30/0621 (2013.01); G06Q 50/04 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A design assist apparatus provided with a processor configured to execute a process of assisting design of a mechanical device driven by a feedback controlled electric motor,
wherein the processor is configured to:
set a plurality of parameters of a mathematical model of a mechanical component forming the mechanical device that are adjustable,
compute a pole of a transfer function of the mechanical device associated with one or more vibration modes of the mechanical device according to the parameters, and
create and display a stability determination diagram including an isoline of a real part of the pole of the transfer function with respect to the parameters, the isoline defining a stable region where a value of the real part is negative and an unstable region where a value of the real part is positive, the stability determination diagram including one or more symbols respectively corresponding to one or more candidates for the mechanical component, each symbol indicating parameters of a corresponding candidate.