Most of conventional controllers are prone to consume more computational time for controlling a wheeled humanoid robot. A nonlinear trajectory control of a wheeled humanoid robot using a model-based controller with less computational load and energy consumption is presented in this article. The upper body of the humanoid robot consists of two 6 degrees of freedom redundant arms, a three degrees of freedom torso and a two degrees of freedom neck. The nonholonomic mobile platform consists of two actuated wheels and two caster wheels. Nonlinearity of the robot dynamic model and coupling between various branches of the upper body are taken into account. The dynamic model derived using Newton–Euler approach along with decoupled Natural Orthogonal Complement matrix approach is used to derive dynamic equations of the upper body and the wheeled platform. Zero moment point based stability approach is used for verifying stable motion of the wheeled humanoid robot with minimum energy and time consumption to complete a task. The proposed computed torque controller is compared with other similar controllers developed for the same robot model to prove advantages of the proposed torque controller. Simulation results are experimentally validated with the real robot.
NascimentoTPDóreaCEGonçalvesLM. Nonholonomic mobile robots’ trajectory tracking model predictive control: a survey. Robotica2018; 36(5): 676–696.
2.
FichtGBehnkeS. Fast whole-body motion control of humanoid robots with inertia constraints. In: IEEE international conference on robotics and automation (ICRA), Paris, 31 May–31 August 2020, pp.6597–6603. New York: IEEE.
3.
VelagićJKovačIPanjevićA, et al. Design and control of two-wheeled and self-balancing mobile robot. In: international symposium ELMAR, Zadar, Croatioa, 13–15 September 2021.
4.
LeeKSimOJeongH, et al. Implementing full-body torque control in humanoid robot with high gear ratio using pulse width modulation voltage. In: IEEE/RSJ international conference on intelligent robots and systems (IROS), Madrid, 1–5 October 2018.
5.
ParkHAAliMALeeCSG. Closed-form inverse kinematic position solution for humanoid robots. Int J Humanoid Robot2021; 9(3): 1–28.
6.
ZafarMChristensenHI. Whole body control of a wheeled inverted pendulum humanoid. In: IEEE-RAS international conference on humanoid robots, Cacun, Mexico, 15–17 November 2016, pp.89–94. New York: IEEE.
7.
HwangYKKangSCParkSM, et al. Human interface, automatic planning, and control of a humanoid robot. Int J Robot Res1998; 17(11): 1131–1149.
8.
OttCHenzeBLeeD. Kinesthetic teaching of humanoid motion based on whole-body compliance control with interaction-aware balancing. In: IEEE/RSJ international conference on intelligent robots and systems, Tokyo, Japan, 3–7 November 2013, pp.4615–4621. New York: IEEE.
9.
NagarajanUKantorGHollisR. The ballbot: an omnidirectional balancing mobile robot. Int J Rob Res2014; 33(6): 917–930.
10.
SavićSMemberSRakovićM, et al. Robust control of humanoid robot upper-body motion. In: 57th ETRAN conference, Zlatibor, Serbia, 3–6 June 2013.
RijnenMMooijEDTraversaroS, et al. Control of humanoid robot motions with impacts: numerical experiments with reference spreading control. In: IEEE international conference on robotics and automation, Singapore, 29 May–3 June 2017, pp.4102–4107. New York: IEEE.
13.
IbanezABidaudPPadoisV. Unified preview control for humanoid postural stability and upper-limb interaction adaptation. In: IEEE international workshop on intelligent robots and systems, Vilamoura-Algarve, Portugal, 7–12 October 2012, pp.1801–1808. New York: IEEE.
14.
WongCCChengCCHuangbKH, et al. Fuzzy control of humanoid robot for obstacle avoidance. Int J Fuzzy Syst2008; 10(1): 1–10.
15.
HenzeBOttCRoaMA. Posture and balance control for humanoid robots in multi-contact scenarios based on model predictive control. In: IEEE international workshop on intelligent robots and systems, Chicago, IL, 14–18 September 2014, pp.3253–3258. New York: IEEE.
16.
CvejnJ. The variable-inertia modified computed-torque control of robot manipulators. Multibody Syst Dyn2022; 57: 157–179.
17.
MerckaertKConvensBWuCJ, et al. Real-time motion control of robotic manipulators for safe human–robot coexistence. Robot Com-Int Manuf2022; 73: 102223.
18.
RomualdiGVillaNADafarraS, et al. Whole-body control and estimation of humanoid robots with link flexibility. In: IEEE-RAS international conference on humanoid robots, Ginowan, Japan, 28–30 November 2022, pp.104–111. New York: IEEE.
19.
KangYXueBZengR. Self-adaptive path tracking control for mobile robots under slippage conditions based on an RBF neural network. Algorithms2021; 14(7): 196.
20.
RabbaniMJMemonAY. Trajectory tracking and stabilization of nonholonomic wheeled mobile robot using recursive integral backstepping control. Electron2021; 10(16): 1992.
21.
SharkawyANKoustoumpardisPN. Dynamics and computed-torque control of a 2-DOF manipulator: mathematical analysis. Int J Adv Sci Technol2019; 28(12): 201–212.
22.
Nguyen-TuongDPetersJ. Learning robot dynamics for computed torque control using local Gaussian processes regression. In: ECSIS symposium on learning and adaptive behaviors for robotic systems (LAB-RS), Edinburg, 6–8 August 2008, pp.59–64. New York: IEEE.
23.
BoukattayaMMezghaniNDamakT. Computed-torque control of a wheeled mobile manipulator. Int J Robot Eng2018; 3(5): 1–6.
24.
ZambellaGLentiniGGarabiniM, et al. Dynamic whole-body control of unstable wheeled humanoid robots. IEEE Robot Autom Lett2019; 4(4): 3489–3496.
25.
Abi-FarrajFHenzeBOttC, et al. Torque-based balancing for a humanoid robot performing high-force interaction tasks. IEEE Robot Autom Lett2019; 4(2): 2023–2030.
26.
ShingareyDKaulLAsfourT. Torque-based velocity control for safe human-humanoid interaction. In: BernsKGörgesD (eds) Advances in service and industrial robotics. International Conference on Robotics in Alpe-Adria Danube Region (RAAD) 2019: Advances in intelligent systems and computing. Cham: Springer, 2020, pp.61–68.
27.
SeyfiNSKeymasi KhalajiA. Robust control of a cable-driven rehabilitation robot for lower and upper limbs. ISA Trans2022; 125: 268–289.
28.
SutyasadiP. Control improvement of low-cost cast aluminium robotic arm using arduino based computed torque control. J Ilm Tek Elektro Komput Dan Inform2022; 8(4): 650–659.
29.
LiJGaoHWanY, et al. Whole-body control for a torque-controlled legged mobile manipulator. Actuators2022; 11(11): 304.
30.
RamuzatNBoriaSStasseO. Passive inverse dynamics control using a global energy tank for torque-controlled humanoid robots in multi-contact. IEEE Robot Autom Lett2022; 7(2): 2787–2794.
31.
SongZYiJZhaoD, et al. A computed torque controller for uncertain robotic manipulator systems: fuzzy approach. Fuzzy Sets Syst2005;154(2):208–226.
32.
WinterDA. Biomechanics and motor control of human movement. Hoboken, NJ: John Wiley, 2009.
33.
SulaimanSSudheerAP. Modelling of torso and dual arms for a humanoid robot with fixed base by using screw theory for dexterous applications. IOP Conf Ser Mater Sci Eng2021; 1132(1): 012036.
34.
SulaimanSSudheerAPSahaSK. DeNOC based dynamic modelling of a tree type humanoid upper-body robot with fixed base. ACM Int Conf Proc Ser2021; 35: 1–8.
35.
BjörkenstamSGleesonDBohlinR, et al. Energy efficient and collision free motion of industrial robots using optimal control. In: IEEE international conference on automation science and engineering (CASE), Madison, WI, 17–20 August 2013, pp.510–515. New York: IEEE.
36.
ErbaturKOkazakiAObiyaK, et al. A study on the zero moment point measurement for biped walking robots. In: Proceedings of the 7th international workshop on advanced motion control (Cat. No. 02TH8623), Maribor, Slovenia, 3–5 July 2002, pp.431–436. New York: IEEE.
37.
SulaimanSSudheerAP. Comparison of two feed forward controllers for a wheeled humanoid robot with redundant arms. In: Conference of innovative product design and intelligent manufacturing system 2023, NIT Warangal, India, 2023 (submitted).
38.
SulaimanSGeorgeS. Kinematic control of a wheeled humanoid robot with redundant. In: Proceedings of the 2nd Indian international conference on industrial engineering and operations management Warangal, Telangana, India, 16–18 August 2022, pp.548–555. IEOM Society.
39.
SulaimanSSudheerAP. Dexterity analysis and intelligent trajectory planning of redundant dual arms for an upper body humanoid robot. Ind Rob2021; 48(6): 915–928.
