equipment and the control of the hydraulic pump are completed, as shown in Fig。 4。 The hydraulic control module is used to separate and fuse the cavities B, C, and D。 The data transmission is deployed in the mobile embedded  node  with antenna。

The engine of the mechanical equipment is connected with the hydraulic control module through the harmonic filter。 Formula (3) shows the relationship between the output of the hydraulic characteristics and the transmis- sion power of the mobile embedded   nodes。

 Psending  ¼ ΔvsendingAHC

2500 sinα ð3Þ

Here, Psending is the transmission power, vsending is the transmission rate, and AHC is the output of the hydraulic characteristics。

In order to improve the efficiency of the mechanical hy- draulic transmission, we select the hydraulic control target value as the maximum power load。 In order to ensure the stability and safety of the mechanical hydraulic module, the working efficiency of the cavity BCD is always maintained at the maximum power Pmax, such as formula (4)。 In order to ensure the validity and credibility of the analysis of hy- draulic characteristics, the target value of the antenna array of the hydraulic control system and the mobile embedded node must meet formula  (5)。

ΔδME ð Þ

Here, ηMN is the working efficiency of mobile embed- ded node。 δME is the working efficiency of mechanical equipment。

Table 1。 Mobile embedded node parameters are set as shown in Table 2。 The experimental environment is a closed indoor environment for avoiding the external noise interference。 We mainly analyze the mechanical performance of the mechanical equipment in the normal working line。

In first experiment, the mobile embedded nodes were deployed in a set of transmission system。 The hydraulic analysis performance of the hydraulic drive system is compared with that of  the  horizontal  coordinate。

We  studied  the  three  sets  of  transmission  system  in

Here, SHC represents the weight matrix of hydraulic analysis。 EME represents the efficiency of the hydraulic control system。 Aantenna represents the antenna array, which can be obtained by differentiating  the  working time and the maximum  power。

Hydraulic characteristics of the analysis mechanism to obtain the parameters of  the  hydraulic  output  torque THC, hydraulic control weight WHC, and mechanical hy- draulic function area SAHC  are shown in formula   (6)。

8> T   sinðαÞEME

>  HC  ¼ d⋅ tan α−1

the second experiment。 The analysis network was com- posed of three mobile embedded nodes, for studying the hydraulic monitoring time and natural stop transfer ra- tio, which record the pressure characteristics of the hy- draulic system to carry out a comparative analysis of the situation。

The results of the first experiment are shown in Fig。 5。 The mechanical hydraulic performance analysis of static and dynamic nodes is compared。 The horizontal coord- inate indicates the working load ratio of the hydraulic transmission  system,  from  10  to  90  %。  The     vertical

coordinate  is  the  mechanical  hydraulic  output    torque。

Table 1 Parameter settings of mechanical hydraulic

transmission system

Parameters Value Descriptions

>SAHC  ¼ 2π pffidffiffiffiffiffidffiffiffiffiffi vsending