Characterization of transmissions of wheeled and tracked vehicles with individual drive wheels

Introduction. Currently, intensive work is underway to create a terrestrial all-terrain electric vehicle, in particular wheeled and tracked vehicles with specific drive wheels. At the same time, scientific methods for ensuring the mobility of such machines at the design stage are absent.

The purpose of the study was to develop a set of full-scale mathematical modeling that could allow simulating the movement of wheeled, tracked and two-link tracked vehicles in real time on a humancontrolled computer.

Methodology and research methods. The paper discusses the method of selecting the required mechanical characteristics of the individual drive wheels of a wheeled, tracked, as well as a two-link tracked vehicle that provides the required level of average speed in statistically specified driving conditions.

Scientific novelty and results. The article presents mathematical models of wheeled, tracked and two-link tracked vehicles, on the basis of which a complex of full-scale mathematical modeling was built. The dependences characterizing the interaction of the mover with the support base have been given. The main capabilities of the complex of natural-mathematical modeling and its composition were described. To conduct numerical experiments, a route synthesis method has been developed, which consisted in calculating the road curvature and the interaction coefficients with the reference base on the basis of known statistical data (correlation functions). When making virtual races, a group of test drivers collected data on transmission modes and average speeds for various maximum power of transport vehicles.

Practical significance. The processing of the obtained information has allowed the writers to formulate requirements for long-term and short-term operating modes of traction electric motors, as well as for the necessary zone providing high operating efficiency. The proposed method made it possible to select the characteristics of an electromechanical transmission taking into account the turning particularities of a wheeled, tracked and two-link vehicle.

1. Kotiev G.O., Chernyshev N.V., Gorelov V.A. [Mathematical model of 8х8 vehicle curvilinear motion with various steering systems]. Zhurnal avtomobil’nykh inzhenerov, 2009, no. 2, pp. 34–39. (In Russian)

2. Kotiev G.O., Gorelov V.A., Miroshnichenko A.V. [Mathematical modeling of operation processes of wheeled and tracked vehicles with electromechanical transmissions]. Collection of scientific papers, 2016, pp. 76–86. (In Russian)

3. Shmakov A.Yu. [Prediction of the characteristics of the curved motion of articulated tracked vehicles. Cand. eng. sci. diss.]. Moscow, BSTU, 2000. 121 p. (In Russian)

4. Krasnen’kov V.I., Kharitonov S.A. [Dynamics of curvilinear movement of a tracked vehicle]. Trudy MVTU, 1980, no. 339, pp. 3–67. (In Russian)

5. Ellis D.R. [Vehicle drivability]. Moscow, Mashinostroenie Publ., 1975. 216 p. (In Russian)

6. Rozhdestvenskiy Yu.L., Mashkov K.Yu. [Formation of reactions during rolling of an elastic wheel on a nondeformable base]. Trudy MVTU, 1982, no. 390, pp. 56–64. (In Russian)

7. Dik A.B. [Calculation of stationary and non-stationary characteristics of the braking wheel when driving with the lead. Cand. eng. sci. diss.]. Omsk, SADI, 1988. 224 p. (In Russian)

8. Raympel’ Y. [Vehicle chassis. Steering]. Moscow, Mashinostroenie Publ., 1987. 232 p. (In Russian)

9. Kotiev G.O., Sarach E.B. [Integrated suspension of highly mobile two-link tracked vehicles]. Moscow, BSTU Publ., 2010. 184 p. (In Russian)

10. Chernetskiy V.I. [Analysis of the accuracy of nonlinear control systems]. Moscow, Mashinostroenie Publ., 1968. 246 p. (In Russian)

11. Rassheplyaev Yu.S., Fandienko V.N. [Synthesis of random process models for the study of automatic control systems]. Moscow, Energiya Publ., 1981. 144 p. (In Russian)

12. Shalygin A.S., Palagin Yu.I. [Applied methods of statistical modeling]. Leningrad, Mashinostroenie Publ., 1986. 320 p. (In Russian)

13. Kotiev G.O., Miroshnichenko A.V., Stadukhin A.A. [Determination of high-speed ranges of multipurpose wheeled and tracked vehicles with electromechanical transmission]. Trudy NAMI, 2017, no. 3 (270), pp. 51–55. (In Russian)

14. Platonov V.F., Leiashvili G.R. [Tracked and wheeled transport traction machines]. Moscow, Mashinostroenie Publ., 1986. 296 p. (In Russian)